Civista Bancshares (CIVB) 10-K15 Mar 212020 FY Annual reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2020	Feb. 25, 2021	Jun. 30, 2020
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Trading Symbol	CIVB
Entity Registrant Name	Civista Bancshares, Inc.
Entity Central Index Key	0000944745
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	true
Entity Incorporation, State or Country Code	OH
Entity File Number	001-36192
Entity Tax Identification Number	34-1558688
Entity Address, Address Line One	100 East Water Street
Entity Address, City or Town	Sandusky
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44870
City Area Code	419
Local Phone Number	625 - 4121
Document Annual Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common shares, no par value
Security Exchange Name	NASDAQ
Documents Incorporated by Reference	Portions of the registrant’s Annual Report to Shareholders for the fiscal year ended December 31, 2020 (the “2020 Annual Report”) are incorporated by reference into Parts I and II of this Form 10-K. Portions of the registrant’s Proxy Statement for the registrant’s 2021 Annual Meeting of Shareholders to be held on April 20, 2021 (the “2021 Proxy Statement”) are incorporated by reference into Part III of this Form 10-K.
Entity Common Stock, Shares Outstanding		15,847,061
Entity Public Float			$ 235,364,680

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Cash and due from financial institutions	$ 128,222,000	$ 48,535,000
Restricted cash	11,300,000
Cash and cash equivalents	139,522,000	48,535,000
Securities available for sale	363,464,000	358,499,000
Equity securities	886,000	1,191,000
Loans held for sale	7,001,000	2,285,000
Loans, net of allowance of $25,028 and $14,767	2,032,474,000	1,694,203,000
Other securities	20,537,000	20,280,000
Premises and equipment, net	22,580,000	22,871,000
Accrued interest receivable	9,421,000	7,093,000
Goodwill	76,851,000	76,851,000
Other intangible assets	8,075,000	8,305,000
Bank owned life insurance	45,976,000	44,999,000
Swap assets	21,700,000	8,918,000
Other assets	14,431,000	15,527,000
Total assets	2,762,918,000	2,309,557,000
Deposits
Noninterest-bearing	720,809,000	512,553,000
Interest-bearing	1,468,589,000	1,166,211,000
Total deposits	2,189,398,000	1,678,764,000
Short-term Federal Home Loan Bank advances	125,000,000	101,500,000
Long-term Federal Home Loan Bank advances	125,000,000	125,000,000
Securities sold under agreements to repurchase	28,914,000	18,674,000
Subordinated debentures	29,427,000	29,427,000
Swap liabilities	21,764,000	8,918,000
Accrued expenses and other liabilities	18,307,000	17,148,000
Total liabilities	2,412,810,000	1,979,431,000
SHAREHOLDERS’ EQUITY
Common stock, no par value, 20,000,000 shares authorized, 17,664,951 shares issued at December 31, 2020 and 17,623,706 shares issued at December 31, 2019	277,039,000	276,422,000
Accumulated earnings	93,048,000	67,974,000
Treasury stock, 1,766,919 common shares at December 31, 2020 and 936,164 common shares at December 31, 2019, at cost	(34,598,000)	(21,144,000)
Accumulated other comprehensive income	14,619,000	6,874,000
Total shareholders’ equity	350,108,000	330,126,000
Total liabilities and shareholders’ equity	$ 2,762,918,000	$ 2,309,557,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Allowance for loan losses	$ 25,028,000	$ 14,767,000
Common stock, no par value
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	17,664,951	17,623,706
Treasury stock, common shares	1,766,919	936,164

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($)	12 Months Ended
Consolidated Statements of Operations - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest and dividend income
Loans, including fees	$ 87,777,000	$ 84,972,000	$ 64,196,000
Taxable securities	5,359,000	6,584,000	4,770,000
Tax-exempt securities	6,123,000	5,647,000	3,976,000
Federal funds sold and other	606,000	851,000	735,000
Total interest and dividend income	99,865,000	98,054,000	73,677,000
Interest expense
Deposits	6,881,000	8,057,000	3,758,000
Federal Home Loan Bank advances	1,932,000	3,452,000	2,471,000
Subordinated debentures	945,000	1,423,000	1,320,000
Securities sold under agreements to repurchase and other	380,000	22,000	21,000
Total interest expense	10,138,000	12,954,000	7,570,000
Net interest income	89,727,000	85,100,000	66,107,000
Provision for loan losses	10,112,000	1,035,000	780,000
Net interest income after provision for loan losses	79,615,000	84,065,000	65,327,000
Noninterest income
Service charges	5,288,000	6,395,000	5,208,000
Net gain (loss) on sale of securities	94,000	32,000	(413,000)
Net gain (loss) on equity securities	(57,000)	121,000	26,000
Net gain on sale of loans	8,563,000	2,707,000	1,621,000
ATM/Interchange fees	4,472,000	4,056,000	2,794,000
Wealth management fees	3,981,000	3,670,000	3,669,000
Bank owned life insurance	977,000	1,007,000	718,000
Tax refund processing fees	2,375,000	2,750,000	2,750,000
Computer center item processing fees	252,000	273,000	260,000
Swap fees	1,459,000	516,000	621,000
Other	778,000	916,000	877,000
Total noninterest income	28,182,000	22,443,000	18,131,000
Noninterest expense
Compensation expense	42,480,000	39,156,000	37,299,000
Net occupancy expense	4,079,000	3,835,000	3,363,000
Equipment expense	2,006,000	2,246,000	1,654,000
Contracted data processing	1,880,000	1,831,000	7,140,000
FDIC Assessment	728,000	138,000	536,000
State franchise tax	1,913,000	1,843,000	1,370,000
Professional services	2,795,000	2,844,000	4,229,000
Amortization of intangible assets	913,000	945,000	366,000
ATM/Interchange expense	1,868,000	1,887,000	1,069,000
Marketing expense	1,074,000	1,411,000	1,182,000
Software maintenance expenses	1,833,000	1,523,000	1,136,000
Other operating expenses	9,096,000	9,288,000	7,335,000
Total noninterest expense	70,665,000	66,947,000	66,679,000
Income before income taxes	37,132,000	39,561,000	16,779,000
Income taxes	4,940,000	5,683,000	2,640,000
Net income	32,192,000	33,878,000	14,139,000
Preferred stock dividends		647,000	959,000
Net income available to common shareholders	$ 32,192,000	$ 33,231,000	$ 13,180,000
Earnings per common share, basic	$ 2	$ 2.12	$ 1.10
Earnings per common share, diluted	$ 2	$ 2.01	$ 1.02

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
Consolidated Statements of Comprehensive Income - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 32,192,000	$ 33,878,000	$ 14,139,000
Other comprehensive income (loss):
Unrealized holding gains (loss) on available for sale securities	10,841,000	13,336,000	(709,000)
Tax effect	(2,277,000)	(2,800,000)	149,000
Pension liability adjustment	(1,037,000)	(2,797,000)	646,000
Tax effect	218,000	587,000	(136,000)
Total other comprehensive income (loss)	7,745,000	8,326,000	(50,000)
Comprehensive income	$ 39,937,000	$ 42,204,000	$ 14,089,000

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($)	Total	Preferred Shares [Member]	Common Shares [Member]	Accumulated Earnings [Member]	Accumulated Earnings [Member]Cumulative Effect Period Of Adoption Adjustment [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]Cumulative Effect Period Of Adoption Adjustment [Member]
Beginning balance at Dec. 31, 2017	$ 184,461,000	$ 17,358,000	$ 153,810,000	$ 31,652,000	$ 278,000	$ (17,235,000)	$ (1,124,000)	$ (278,000)
Beginning balance, shares at Dec. 31, 2017		18,760	10,198,475
Net income	14,139,000			14,139,000
Other comprehensive income (loss)	(50,000)						(50,000)
Conversion of Series B preferred shares to common shares		$ (7,994,000)	$ 7,994,000
Conversion of Series B preferred shares to common shares, shares		(8,640)	1,104,735
UCB acquisition	104,669,000		$ 104,669,000
UCB acquisition, shares			4,277,430
Stock-based compensation	428,000		$ 428,000
Stock-based compensation, shares			22,859
Common share dividends ($0.32, $0.42, and $0.44 per share for the year 2018, 2019 and 2020 respectively)	(3,790,000)			(3,790,000)
Preferred share dividends ($65.00 per share)	(959,000)			(959,000)
Ending balance at Dec. 31, 2018	298,898,000	$ 9,364,000	$ 266,901,000	41,320,000		(17,235,000)	(1,452,000)
Ending balance, shares at Dec. 31, 2018		10,120	15,603,499
Net income	33,878,000			33,878,000
Other comprehensive income (loss)	8,326,000						8,326,000
Conversion of Series B preferred shares to common shares	(404,000)	$ (9,364,000)	$ 8,990,000	(30,000)
Conversion of Series B preferred shares to common shares, shares		(10,120)	1,242,683
Stock-based compensation	531,000		$ 531,000
Stock-based compensation, shares			29,560
Common share dividends ($0.32, $0.42, and $0.44 per share for the year 2018, 2019 and 2020 respectively)	(6,547,000)			(6,547,000)
Preferred share dividends ($65.00 per share)	(647,000)			(647,000)
Purchase of treasury stock	(3,909,000)					(3,909,000)
Purchase of treasury stock, shares			(188,200)
Ending balance at Dec. 31, 2019	330,126,000		$ 276,422,000	67,974,000		(21,144,000)	6,874,000
Ending balance, shares at Dec. 31, 2019			16,687,542
Net income	32,192,000			32,192,000
Other comprehensive income (loss)	7,745,000						7,745,000
Stock-based compensation	617,000		$ 617,000
Stock-based compensation, shares			41,245
Common share dividends ($0.32, $0.42, and $0.44 per share for the year 2018, 2019 and 2020 respectively)	(7,118,000)			(7,118,000)
Purchase of treasury stock	(13,454,000)					(13,454,000)
Purchase of treasury stock, shares			(830,755)
Ending balance at Dec. 31, 2020	$ 350,108,000		$ 277,039,000	$ 93,048,000		$ (34,598,000)	$ 14,619,000
Ending balance, shares at Dec. 31, 2020			15,898,032

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - Accumulated Earnings [Member] - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Common stock dividends per share	$ 0.44	$ 0.42	$ 0.32
Preferred stock dividends per share		$ 65	$ 65

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 32,192,000	$ 33,878,000	$ 14,139,000
Adjustments to reconcile net income to net cash from operating activities
Security amortization, net	1,119,000	1,185,000	1,171,000
Depreciation	2,253,000	2,240,000	1,515,000
Amortization of core deposit intangible	913,000	945,000	366,000
Amortization of net deferred loan fees	(5,511,000)	(99,000)	(166,000)
Net (gain) loss on sale of securities	(94,000)	(32,000)	413,000
Net (gain) loss on equity securities	57,000	(121,000)	(26,000)
Provision for loan losses	10,112,000	1,035,000	780,000
Loans originated for sale	(308,742,000)	(126,690,000)	(78,252,000)
Proceeds from sale of loans	312,589,000	128,503,000	81,085,000
Net gain on sale of loans	(8,563,000)	(2,707,000)	(1,621,000)
Increase in cash surrender value of bank owned life insurance	(977,000)	(1,007,000)	(718,000)
Share-based compensation	617,000	531,000	428,000
Change in Accrued interest payable	(73,000)	47,000	(197,000)
Accrued interest receivable	(2,328,000)	(370,000)	(1,285,000)
Deferred taxes	(2,277,000)	663,000	151,000
Other, net	920,000	1,327,000	1,842,000
Net cash from operating activities	32,207,000	39,328,000	19,625,000
Cash flows used for investing activities:
Maturities, prepayments and calls of securities, available for sale	58,246,000	54,055,000	42,114,000
Sales of securities, available for sale	1,455,000	17,570,000	14,667,000
Purchases of securities, available for sale	(54,850,000)	(71,646,000)	(131,924,000)
Purchases of other securities	(257,000)		(3,247,000)
Redemption of other securities		741,000
Redemption of equity securities	247,000
Acquisition, net of cash acquired			143,797,000
Purchases of bank owned life insurance		(955,000)
Net loan originations	(342,903,000)	(146,877,000)	(98,945,000)
Proceeds from sale of OREO properties			34,000
Premises and equipment purchases	(1,972,000)	(3,201,000)	(1,472,000)
Proceeds from sale of premises and equipment	12,000	2,000	1,190,000
Net cash used for investing activities	(340,022,000)	(150,311,000)	(33,786,000)
Cash flows from financing activities:
Increase (decrease) in deposits	510,634,000	98,871,000	(100,974,000)
Net change in short-term FHLB advances	(101,500,000)	(87,100,000)	131,700,000
Repayment of long-term FHLB advances		(5,000,000)	(10,000,000)
Proceeds from long-term FHLB advances		125,000,000
Repayment of other borrowings	(183,695,000)
Proceeds from other borrowings	183,695,000
Increase (decrease) in securities sold under repurchase agreements	10,240,000	(3,525,000)	444,000
Cash payment for redemption of series B preferred stock		(402,000)
Purchase of treasury stock	(13,454,000)	(3,909,000)
Cash paid on fractional shares on preferred stock conversion		(2,000)
Cash dividends paid	(7,118,000)	(7,194,000)	(4,749,000)
Net cash from financing activities	398,802,000	116,739,000	16,421,000
Increase in cash and due from financial institutions	90,987,000	5,756,000	2,260,000
Cash and cash equivalents at beginning of year	48,535,000	42,779,000	40,519,000
Cash and cash equivalents at end of year	139,522,000	48,535,000	42,779,000
Supplemental disclosures of cash flow information:
Interest paid	10,211,000	12,907,000	7,751,000
Income taxes paid	7,095,000	5,700,000	1,600,000
Transfer of loans from portfolio to other real estate owned	$ 31,000
Transfer of premises to held-for-sale		76,000
Transfer of loans held-for-sale to portfolio			85,000
Securities purchased not settled		1,200,000	500,000
Conversion of preferred stock to common stock		$ 8,960,000	7,994,000
Acquisition of UCB
Consideration paid			117,344,000
Noncash assets acquired:
Securities available for sale			43,214,000
Equity securities			212,000
Loans held for sale			492,000
Loans receivable			298,319,000
FHLB Stock			3,527,000
Accrued interest receivable			950,000
Premises and equipment, net			5,291,000
Goodwill			49,756,000
Core deposit intangible			7,518,000
Bank owned life insurance			17,193,000
Other assets			10,361,000
Total non cash assets acquired			436,833,000
Liabilities assumed:
Deposits			475,944,000
Other liabilities			17,000
Total liabilities assumed			475,961,000
Net noncash liabilities acquired			(39,128,000)
Cash acquired			$ 156,472,000

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The following is a summary of the accounting policies adopted by Civista Bancshares, Inc., which have a significant effect on the Consolidated Financial Statements. Nature of Operations and Principles of Consolidation Civista provides financial services through its offices in the Ohio counties of Erie, Crawford, Champaign, Cuyahoga, Franklin, Logan, Summit, Huron, Ottawa, Madison, Montgomery and Richland, in the Indiana counties of Dearborn and Ripley and in the Kentucky county of Kenton. Its primary deposit products are checking, savings, and term certificate accounts, and its primary lending products are residential mortgage, commercial, and installment loans. Substantially all loans are secured by specific items of collateral including business assets, consumer assets and commercial and residential real estate. Commercial loans are expected to be repaid from cash flow from operations of businesses. There are no significant concentrations of loans to any one industry or customer. However, our customers’ ability to repay their loans is dependent on the real estate and general economic conditions in the area. Other financial instruments that potentially represent concentrations of credit risk include deposit accounts in other financial institutions. FCIA was formed to allow the Company to participate in commission revenue generated through its third party insurance agreement. Insurance commission revenue was less than 1.0% 1% 1% Use of Estimates Cash Flows Securities NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Interest income includes amortization of purchase premium or discount. Premiums and discounts on securities are amortized on the level-yield method without anticipating prepayments, except for mortgage backed securities where prepayments are anticipated. Gains and losses on sales are based on the amortized cost of the security sold using the specific identification method. Securities are evaluated on at least a quarterly basis and more frequently when economic or market conditions warrant such an evaluation to determine whether a decline in their value is other than temporary. For debt securities, management considers whether the present value of cash flows expected to be collected are less than the security’s amortized cost basis, the magnitude and duration of the decline, the reasons underlying the decline and the Company’s intent to sell the security or whether it is more likely than not that the Company would be required to sell the security before its anticipated recovery in market value, to determine whether the loss in value is other than temporary. Once a decline in value is determined to be other than temporary, if the Company does not intend to sell the security, and it is more likely than not that it will not be required to sell the security, before recovery of the security’s amortized cost basis, the charge to earnings is limited to the amount of credit loss. Any remaining difference between fair value and amortized cost is recognized in other comprehensive income, net of applicable taxes. Otherwise, the entire difference between far value and amortized cost is charged to earnings. Other securities which include FHLB stock, Federal Reserve Bank (“FRB”) stock, Federal Agricultural Mortgage Corporation stock, Bankers’ Bancshares Inc. (“BB”) stock, and Norwalk Community Development Corp (“NCDC”) stock are carried at cost. Equity securities Loans Held for Sale: Loans: Interest income on mortgage and commercial loans is discontinued at the time the loan is 90 days delinquent unless the credit is well-secured and in process of collection. Interest income on consumer loans is discontinued when management determines future collection is unlikely. In all cases, loans are placed on nonaccrual or charged-off at an earlier date if collection of principal or interest is considered doubtful. All interest accrued, but not received, for loans placed on nonaccrual, is reversed against interest income. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Purchased Loans: Purchased loans are accounted for individually or aggregated into pools of loans based on common risk characteristics (e.g., credit score, loan type, and date of origination). The Company estimates the amount and timing of expected cash flows for each purchased loan or pool, and the expected cash flows in excess of amount paid is recorded as interest income over the remaining life of the loan or pool (accretable yield). The excess of the loan’s, or pool’s, contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan or pool, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded. If the present value of expected future cash flows is greater than the carrying amount, the excess is recognized as part of future interest income. Allowance for Loan Losses: All Commercial, Commercial Real Estate and Farm Real Estate loans are monitored on a regular basis with a detailed loan review completed for all loan relationships greater than $750. All Commercial, Commercial Real Estate and Farm Real Estate loans that are 90 days past due or in nonaccrual status, are analyzed to determine if they are “impaired”, which means that it is probable that all amounts will not be collected according to the contractual terms of the loan agreement. All loans that are delinquent 90 days are classified as substandard and placed on nonaccrual status unless they are well-secured and in the process of collection. The remaining loans are evaluated and segmented with loans with similar risk characteristics. The Company allocates reserves based on risk categories and portfolio segments described below, which conform to the Company’s asset classification policy. In reviewing risk within Civista’s loan portfolio, management has identified specific segments to categorize loan portfolio risk: (i) Commercial & Agriculture loans; (ii) Commercial Real Estate – Owner Occupied loans; (iii) Commercial Real Estate – Non-Owner Occupied loans; (iv) Residential Real Estate loans; (v) Real Estate Construction loans; (vi) Farm Real Estate loans; and (vii) Consumer and Other loans. Additional information related to economic factors can be found in Note 5. Loan Charge-off Policies: NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Troubled Debt Restructurings: Other Real Estate: Premises and Equipment: three seven seven fifty Federal Home Loan Bank (FHLB) Stock a b c d Federal Reserve Bank (FRB) Stock Bank Owned Life Insurance (BOLI) Goodwill and Other Intangible Assets: NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Other intangible assets consist of core deposit intangibles arising from whole bank and branch acquisitions. These intangible assets are measured at fair value and then amortized on an accelerated method over their estimated useful lives, which range from five twelve Servicing Rights Long-term Assets: Repurchase Agreements Loan Commitments and Related Financial Instruments: Income Taxes The Company prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Benefits from tax positions should be recognized in the financial statements only when it is more likely than not that the tax position will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant information. A tax position that meets the more-likely-than-not recognition threshold is measured at the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement. Tax positions that previously failed to meet the more-likely-than-not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is met. Previously recognized tax positions that no longer meet the more-likely-than-not recognition threshold should be derecognized in the first subsequent financial reporting period in which that threshold is no longer met. The Company recognizes interest and/or penalties related to income tax matters in income tax expense. Stock-Based Compensation NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Compensation cost is recognized over the required service period, generally defined as the vesting period. For awards with graded vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. Retirement Plans Earnings per Common Share Comprehensive Income Loss Contingencies Restrictions on Cash Dividend Restriction Fair Value of Financial Instruments Operating Segments Treasury Stock Business Combinations: NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Derivative Instruments and Hedging Activities Derivatives and Hedging Reclassifications: Adoption of New Accounting Standards: In August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40). In October, 2018, the FASB issued ASU 2018-17, Consolidation (Topic 810) NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) In November, 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808) Effect of Newly Issued but Not Yet Effective Accounting Standards: In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments Financial Instruments – Credit Losses In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment Intangibles – Goodwill and Other evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) In April 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments – Credit Losses, and Topic 825, Financial Instruments, Topic 326, Financial Instruments – Credit Losses The Company is currently evaluating the potential impact of the Topic 326 amendments on the Company’s Consolidated Financial Statements. The amendments to Topic 825 are effective for interim and annual reporting periods beginning after December 15, 2019. Financial Instruments – Credit Losses This Update is not expected to have a material impact on the Company’s financial statements. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses, Topic 326 Financial Instruments – Credit Losses In November 2019, the FASB issued ASU 2019-10, Financial Instruments ‒ Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842) Intangibles ‒ Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (Goodwill) NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) In November 2019, the FASB issued ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments – Credit Losses In March 2020, the FASB issued ASU 2020-03 , Codification Improvements to Financial Instruments. Financial Instruments In January 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, March 2020 In October 2020, the FASB issued ASU 2020-08, Codification Improvements to Subtopic 310-20, Receivables – Nonrefundable Fees and Other Costs,

Merger

Merger	12 Months Ended
Merger	Dec. 31, 2020
Business Combinations [Abstract]
Merger	NOTE 2 – MERGER On September 14, 2018, CBI completed the acquisition by merger of United Community Bancorp (“UCB”) in a stock and cash transaction for aggregate consideration of approximately $117,344. Acquisition-related costs of $5,231, $5,515, $1,638, $131 and $220 are included in compensation expense, contracted data processing, professional services, marketing expense and other operating expense, respectively, in the Company’s Consolidated Statements of Operation for the year ended December 31, 2018. As a result of the acquisition, the Company issued 4,277,430 common shares and paid approximately $12,675 in cash to the former shareholders of UCB. At the time of the merger, UCB had total assets of $537,875, including $298,319 in loans, and $475,944 in deposits. The transaction was recorded as a purchase and, accordingly, the operating results of UCB have been included in the Company’s Consolidated Financial Statements since the close of business on September 14, 2018. The following table presents financial information for the former UCB included in the Consolidated Statements of Operations from the date of acquisition through December 31, 2018. Actual From Acquisition Date Through December 31, 2018 (in thousands) Net interest income after provision for loan losses $ 3,227 Noninterest income 373 Net income 1,707 The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition for UCB. Core deposit intangibles will be amortized over a period of ten years using an accelerated method. Goodwill will not be amortized, but instead will be evaluated for impairment. Furthermore, the unaudited pro forma information does not reflect management’s estimate of any revenue-enhancing opportunities nor anticipated cost savings as a result of the integration and consolidation of the acquisition. Consideration paid $ 117,344 Net assets acquired: Cash and due from financial institutions $ 156,472 Securities available for sale 43,214 Equity securities 212 Loans held for sale 492 Loans, net 298,319 Other securities 3,527 Premises and equipment 5,291 Accrued interest receivable 950 Core deposit intangible 7,518 Bank owned life insurance 17,193 Other assets 10,361 Noninterest-bearing deposits ( 112,787 ) Interest-bearing deposits ( 363,157 ) Other liabilities ( 17 ) 67,588 Goodwill resulting from UCB merger $ 49,756

Securities

Securities	12 Months Ended
Securities	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Securities	NOTE 3 - SECURITIES The amortized cost and fair value of available for sale securities and the related gross unrealized gains and losses recognized were as follows: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2020 U.S. Treasury securities and obligations of U.S. government agencies $ 21,479 $ 220 $ ( 6 ) $ 21,693 Obligations of states and political subdivisions 208,013 21,000 ( 1 ) 229,012 Mortgage-back securities in government sponsored entities 106,824 5,963 ( 28 ) 112,759 Total debt securities $ 336,316 $ 27,183 $ ( 35 ) $ 363,464 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2019 U.S. Treasury securities and obligations of U.S. government agencies $ 19,401 $ 204 $ ( 4 ) $ 19,601 Obligations of states and political subdivisions 193,646 12,409 ( 21 ) 206,034 Mortgage-back securities in government sponsored entities 129,145 3,863 ( 144 ) 132,864 Total debt securities $ 342,192 $ 16,476 $ ( 169 ) $ 358,499 The amortized cost and fair value of securities at year end 2020 by contractual maturity were as follows. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately. Available for sale Amortized Cost Fair Value Due in one year or less $ 11,749 $ 11,898 Due from one to five years 13,675 14,118 Due from five to ten years 28,114 30,236 Due after ten years 175,954 194,453 Mortgage-backed securities in government sponsored entities 106,824 112,759 Total securities available for sale $ 336,316 $ 363,464 Securities with a carrying value of $159,527 and $139,004 were pledged as of December 31, 2020 and 2019, respectively, to secure public deposits, other deposits and liabilities as required or permitted by law. NOTE 3 – SECURITIES (Continued) Proceeds from sales of securities, gross realized gains and gross realized losses were as follows: 2020 2019 2018 Sale proceeds $ 1,455 $ 17,570 $ 14,667 Gross realized gains 94 47 6 Gross realized losses — 43 393 Gains (losses) from securities called or settled by the issuer — 28 ( 26 ) Debt securities with unrealized losses at year end 2020 and 2019 not recognized in income were as follows: 2020 12 Months or less More than 12 months Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities and obligations of U.S. government agencies $ 6,501 $ ( 5 ) $ 126 $ ( 1 ) $ 6,627 $ ( 6 ) Obligations of states and political subdivisions 1,874 ( 1 ) — — 1,874 ( 1 ) Mortgage-backed securities in gov’t sponsored entities 5,755 ( 28 ) — — 5,755 ( 28 ) Total temporarily impaired $ 14,130 $ ( 34 ) $ 126 $ ( 1 ) $ 14,256 $ ( 35 ) 2019 12 Months or less More than 12 months Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities and obligations of U.S. government agencies $ — $ — $ 3,408 $ ( 4 ) $ 3,408 $ ( 4 ) Obligations of states and political subdivisions 1,947 ( 21 ) — — 1,947 ( 21 ) Mortgage-backed securities in gov’t sponsored entities 10,653 ( 91 ) 7,732 ( 53 ) 18,385 ( 144 ) Total temporarily impaired $ 12,600 $ ( 112 ) $ 11,140 $ ( 57 ) $ 23,740 $ ( 169 ) The Company periodically evaluates securities for other-than-temporary impairment. An unrealized loss exists when the current fair value of an individual security is less than its amortized cost basis. Unrealized losses that are determined to be temporary in nature are recorded, net of tax, in accumulated other comprehensive loss on the Consolidated Balance Sheet. The Company has assessed each available-for-sale security position for credit impairment. Factors considered in determining whether a loss is temporary include: • The length of time and the extent to which fair value has been below cost; • The severity of impairment; • The cause of the impairment and the financial condition and near-term prospects of the issuer; • If the Company intends to sell the investment; • If it’s more-likely-than-not the Company will be required to sell the investment before recovering its amortized cost basis; and • If the Company does not expect to recover the investment’s entire amortized cost basis (even if the Company does not intend to sell the investment). NOTE 3 – SECURITIES (Continued) The Company’s review for impairment generally entails: • Identification and evaluation of investments that have indications of impairment; • Analysis of individual investments that have fair values less than amortized cost, including consideration of length of time each investment has been in unrealized loss position and the expected recovery period; • Evaluation of factors or triggers that could cause individual investments to qualify as having other-than-temporary impairment; and • Documentation of these analyses, as required by policy. At December 31, 2020, the Company owned 11 securities that were considered temporarily impaired. The unrealized losses on these securities have not been recognized into income because the issuers’ bonds are of high credit quality, management has the intent and ability to hold these securities for the foreseeable future, and the decline in fair value is largely due to changes in market interest rates. The Company also considers sector specific credit rating changes in its analysis. The fair value is expected to recover as the securities approach their maturity date or reset date. The Company does not intend to sell until recovery and does not believe selling will be required before recovery. The following table presents the net gains and losses on equity investments recognized in earnings at year-end 2020 and 2019, and the portion of unrealized gains and losses for the period that relates to equity investments held at year-end 2020 and 2019: 2020 2019 Net gains (losses) recognized on equity securities during the year $ ( 57 ) $ 121 Less: Net gains realized on the sale of equity securities during the period 6 — Unrealized gains (losses) recognized in equity securities held at December 31 $ ( 51 ) $ 121

Loans

Loans	12 Months Ended
Loans	Dec. 31, 2020
Receivables [Abstract]
Loans	NOTE 4 - LOANS Loans at year-end were as follows: 2020 2019 Commercial and Agriculture $ 409,876 $ 203,110 Commercial Real Estate - owner occupied 278,413 245,606 Commercial Real Estate - non-owner occupied 705,072 592,222 Residential Real Estate 442,588 463,032 Real Estate Construction 175,609 155,825 Farm Real Estate 33,102 34,114 Consumer and Other 12,842 15,061 Total Loans 2,057,502 1,708,970 Allowance for loan losses ( 25,028 ) ( 14,767 ) Net loans $ 2,032,474 $ 1,694,203 Included in Commercial & Agriculture as of December 31, 2020 is $217,295 of Paycheck Protection Program (“PPP”) loans. Included in total loans above are deferred loan fees of $5,998 and $488 at December 31, 2020 and 2019, respectively. Included in net deferred loan fees as of December 31, 2020 is $5,194 of net deferred loan fees from PPP loans. Paycheck Protection Program During 2020, we processed over 2,300 loans totaling $259.1 million, of which $41.8 million have been forgiven or have paid off. SBA fees total approximately $9.9 million, which are being recognized in interest income over the life of the PPP loans. During the year, $4.7 million of PPP fees were accreted to income. We borrowed $183.7 million from the Paycheck Protection Program Lending Facility (“PPPLF”), anticipating an additional funding source for PPP landing. We have since determined this source was no longer needed and have paid off the PPPLF in full. Loans to principal officers, directors, and their affiliates at year-end 2020 and 2019 were as follows: 2020 2019 Balance - Beginning of year $ 9,909 $ 8,722 New loans and advances 1,153 3,057 Repayments ( 3,004 ) ( 2,574 ) Effect of changes to related parties 417 704 Balance - End of year $ 8,475 $ 9,909

Allowance for Loan Losses

Allowance for Loan Losses	12 Months Ended
Allowance for Loan Losses	Dec. 31, 2020
Text Block [Abstract]
Allowance for Loan Losses	NOTE 5 - ALLOWANCE FOR LOAN LOSSES Management has an established methodology to determine the adequacy of the allowance for loan losses that assesses the risks and losses inherent in the loan portfolio. For purposes of determining the allowance for loan losses, the Company has segmented certain loans in the portfolio by product type. Loans are segmented into the following pools: Commercial and Agriculture loans, Commercial Real Estate – Owner Occupied loans, Commercial Real Estate – Non-owner Occupied loans, Residential Real Estate loans, Real Estate Construction loans, Farm Real Estate loans and Consumer and Other loans. Loss migration rates for each risk category are calculated and used as the basis for calculating loan loss allowance allocations. Loss migration rates are calculated over a three-year • Changes in lending policies and procedures • Changes in experience and depth of lending and management staff • Changes in quality of credit review system • Changes in the nature and volume of the loan portfolio • Changes in past due, classified and nonaccrual loans and TDRs • Changes in economic and business conditions • Changes in competition or legal and regulatory requirements • Changes in concentrations within the loan portfolio • Changes in the underlying collateral for collateral dependent loans NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) The total allowance reflects management’s estimate of loan losses inherent in the loan portfolio at the consolidated balance sheet date. The Company considers the allowance for loan losses of $25,028 adequate to cover loan losses inherent in the loan portfolio, at December 31, 2020. The following tables present, by portfolio segment, the changes in the allowance for loan losses, the ending allocation of the allowance for loan losses and the loan balances outstanding for the years ended December 31, 2020, 2019 and 2018. The changes can be impacted by overall loan volume, adversely graded loans, historical charge-offs and economic factors. Allowance for loan losses: December 31, 2020 Beginning balance Charge-offs Recoveries Provision (Credit) Ending Balance Commercial & Agriculture $ 2,219 $ ( 20 ) $ 7 $ 604 $ 2,810 Commercial Real Estate: Owner Occupied 2,541 ( 148 ) 259 1,405 4,057 Non-Owner Occupied 6,584 — 48 5,819 12,451 Residential Real Estate 1,582 ( 236 ) 218 920 2,484 Real Estate Construction 1,250 — 4 1,185 2,439 Farm Real Estate 344 — 13 ( 19 ) 338 Consumer and Other 247 ( 61 ) 65 ( 42 ) 209 Unallocated — — — 240 240 Total $ 14,767 $ ( 465 ) $ 614 $ 10,112 $ 25,028 For the year ended December 31, 2020, the Company provided $10,112 to the allowance for loan losses. The provision was primarily the result of an increase in Civista’s qualitative factors, primarily changes in international, national, regional and local conditions, related to the economic shutdown driven by the ongoing COVID-19 pandemic. Economic impacts related to the COVID-19 pandemic include the loss of revenue being experienced by our business clients, disruption of supply chains, additional employee costs for businesses due to the pandemic, higher unemployment rates throughout our footprint and a large number of customers requesting payment relief. The allowance for Commercial & Agriculture loans increased due to an increase in general reserves required for this type as a result of an increase in loan balances mainly from Civista’s participation in the PPP loan program and by an increase in loss rates, resulting in an increase in the provision. PPP loans are eligible for a 100% guaranty by the U.S. Small Business Administration (“SBA”). However, in the event of a loss resulting from a default on a PPP loan, and a determination by the SBA that there was a deficiency in the manner on which the PPP loan was originated or funded, the SBA may deny its liability under the guaranty. The reserve percentage for PPP loans is substantially less than the other loans in this segment. The allowance for Commercial Real Estate – Owner Occupied loans increased due to an increase in general reserves required for this type as a result of higher loan balances, an increase in classified, the volume of loans currently in payment deferral, and an increase in loss rates. The result was represented as an increase in the provision. The allowance for Commercial Real Estate – Non-Owner Occupied loans increased due to an increase in general reserves required as a result of an increase in loan balances, an increase in classified loans, the volume of loans currently in payment deferral, and an increase in loss rates. This was represented as an increase in the provision. The allowance for Residential Real Estate loans increased due to an increase in general reserves required for this type as a result of factors related to the COVID-19 pandemic, offset by a decrease in loan balances, represented by an increase in the provision. The allowance for Real Estate Construction loans increased due to an increase in general reserves required as a result of an increase in loan balances and an increase in loss rates, represented by an increase in the provision. The allowance for Farm Real Estate loans decreased due to a decrease in general reserves required as a result of a decrease in loan balances. The result was represented as a decrease in the provision. The allowance for Consumer and Other loans decreased due to a decrease in general reserves required as a result of a decrease in loan balances and loss rates. The result was represented as a decrease in the provision. Management feels that the unallocated amount is appropriate and within the relevant range for the allowance that is reflective of the uncertainty in the portfolio at December 31, 2020. NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) Allowance for loan losses: December 31, 2019 Beginning balance Charge-offs Recoveries Provision (Credit) Ending Balance Commercial & Agriculture $ 1,747 $ ( 114 ) $ 86 $ 500 $ 2,219 Commercial Real Estate: Owner Occupied 1,962 ( 161 ) 289 451 2,541 Non-Owner Occupied 5,803 — 102 679 6,584 Residential Real Estate 1,531 ( 294 ) 259 86 1,582 Real Estate Construction 1,046 ( 24 ) 3 225 1,250 Farm Real Estate 397 — 5 ( 58 ) 344 Consumer and Other 284 ( 183 ) 85 61 247 Unallocated 909 — — ( 909 ) — Total $ 13,679 $ ( 776 ) $ 829 $ 1,035 $ 14,767 For the year ended December 31, 2019, the allowance for Commercial & Agriculture loans increased as a result of an increase in general reserves due to higher loan balances. The result was represented as an increase in the provision. The allowance for Commercial Real Estate – Owner Occupied loans increased as a result of an increase in general reserves due to higher loan balances. The result was represented as an increase in the provision. The allowance for Commercial Real Estate – Non-Owner Occupied loans increased due to an increase in general reserves required for this type as a result of higher loan balances. The allowance for Residential Real Estate loans increased as a result of an increase in general reserves required for this type as a result of an increase in outstanding loan balances, represented by an increase in the provision. The allowance for Real Estate Construction loans increased due to higher outstanding loan balances for this type of loan. The allowance for Farm Real Estate loans was reduced by a decrease in general reserves required for this type as a result of lower outstanding loan balances. The result was represented as a decrease in the provision. NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) Allowance for loan losses: December 31, 2018 Beginning balance Charge-offs Recoveries Provision (Credit) Ending Balance Commercial & Agriculture $ 1,562 $ ( 249 ) $ 169 $ 265 $ 1,747 Commercial Real Estate: Owner Occupied 2,043 ( 193 ) 158 ( 46 ) 1,962 Non-Owner Occupied 5,307 ( 153 ) 28 621 5,803 Residential Real Estate 1,910 ( 105 ) 208 ( 482 ) 1,531 Real Estate Construction 834 — — 212 1,046 Farm Real Estate 430 — 5 ( 38 ) 397 Consumer and Other 290 ( 203 ) 100 97 284 Unallocated 758 — — 151 909 Total $ 13,134 $ ( 903 ) $ 668 $ 780 $ 13,679 For the year ended December 31, 2018, the allowance for Commercial & Agriculture loans increased as a result of an increase in general reserves due to higher loan balances. The result was represented as an increase in the provision. The allowance for Commercial Real Estate – Owner Occupied loans was reduced by a decrease in general reserves as a result of lower loss rates. The result was represented as a decrease in the provision. The allowance for Commercial Real Estate – Non-Owner Occupied loans increased due to an increase in general reserves required for this type as a result of higher loan balances. The allowance for Residential Real Estate loans was reduced by a decrease in general reserves required for this type as a result of a decrease in loss rates, represented by a decrease in the provision. The allowance for Real Estate Construction loans increased due to higher outstanding loan balances for this type of loan. The allowance for Farm Real Estate loans was reduced by a decrease in general reserves required for this type as a result of lower outstanding loan balances. The result was represented as a decrease in the provision. NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) The following tables present, by portfolio segment, the allocation of the allowance for loan losses and related loan balances as of December 31, 2020 and December 31, 2019. December 31, 2020 Loans acquired with credit deterioration Loans individually evaluated for impairment Loans collectively evaluated for impairment Total Allowance for loan losses: Commercial & Agriculture $ — $ 73 $ 2,737 $ 2,810 Commercial Real Estate: Owner Occupied — 5 4,052 4,057 Non-Owner Occupied — — 12,451 12,451 Residential Real Estate — 29 2,455 2,484 Real Estate Construction — — 2,439 2,439 Farm Real Estate — — 338 338 Consumer and Other — — 209 209 Unallocated — — 240 240 Total $ — $ 107 $ 24,921 $ 25,028 Outstanding loan balances: Commercial & Agriculture $ — $ 74 $ 409,802 $ 409,876 Commercial Real Estate: Owner Occupied — 980 277,433 278,413 Non-Owner Occupied — 48 705,024 705,072 Residential Real Estate 388 946 441,254 442,588 Real Estate Construction — — 175,609 175,609 Farm Real Estate — 618 32,484 33,102 Consumer and Other — — 12,842 12,842 Total $ 388 $ 2,666 $ 2,054,448 $ 2,057,502 NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) December 31, 2019 Loans acquired with credit deterioration Loans individually evaluated for impairment Loans collectively evaluated for impairment Total Allowance for loan losses: Commercial & Agriculture $ — $ — $ 2,219 $ 2,219 Commercial Real Estate: Owner Occupied — 9 2,532 2,541 Non-Owner Occupied — — 6,584 6,584 Residential Real Estate — 82 1,500 1,582 Real Estate Construction — — 1,250 1,250 Farm Real Estate — — 344 344 Consumer and Other — — 247 247 Unallocated — — — — Total $ — $ 91 $ 14,676 $ 14,767 Outstanding loan balances: Commercial & Agriculture $ — $ 367 $ 202,743 $ 203,110 Commercial Real Estate: Owner Occupied — 426 245,180 245,606 Non-Owner Occupied — 374 591,848 592,222 Residential Real Estate 467 1,764 460,801 463,032 Real Estate Construction — — 155,825 155,825 Farm Real Estate — 666 33,448 34,114 Consumer and Other — — 15,061 15,061 Total $ 467 $ 3,597 $ 1,704,906 $ 1,708,970 The following tables represent credit exposures by internally assigned risk ratings for the periods ended December 31, 2020 and 2019. The remaining loans in the Residential Real Estate, Real Estate Construction and Consumer and Other loan categories that are not assigned a risk grade are presented in a separate table below. The risk rating analysis estimates the capability of the borrower to repay the contractual obligations of the loan agreements as scheduled or at all. The Company’s internal credit risk rating system is based on experiences with similarly graded loans. The Company’s internally assigned grades are as follows: • Pass – loans which are protected by the current net worth and paying capacity of the obligor or by the value of the underlying collateral. • Special Mention – loans where a potential weakness or risk exists, which could cause a more serious problem if not corrected. • Substandard – loans that have a well-defined weakness based on objective evidence and are characterized by the distinct possibility that Civista will sustain some loss if the deficiencies are not corrected. • Doubtful – loans classified as doubtful have all the weaknesses inherent in a substandard asset. In addition, these weaknesses make collection or liquidation in full highly questionable and improbable, based on existing circumstances. • Loss – loans classified as a loss are considered uncollectible, or of such value that continuance as an asset is not warranted. • Unrated – Generally, Residential Real Estate, Real Estate Construction and Consumer and Other loans are not risk-graded, except when collateral is used for a business purpose. NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) December 31, 2020 Pass Special Mention Substandard Doubtful Ending Balance Commercial & Agriculture $ 401,636 $ 4,472 $ 3,768 $ — $ 409,876 Commercial Real Estate: Owner Occupied 248,316 19,429 10,668 — 278,413 Non-Owner Occupied 604,909 58,270 41,893 — 705,072 Residential Real Estate 81,409 668 5,524 — 87,601 Real Estate Construction 158,207 962 492 — 159,661 Farm Real Estate 30,486 216 2,400 — 33,102 Consumer and Other 833 — 33 — 866 Total $ 1,525,796 $ 84,017 $ 64,778 $ — $ 1,674,591 December 31, 2019 Pass Special Mention Substandard Doubtful Ending Balance Commercial & Agriculture $ 199,649 $ 2,236 $ 1,225 $ — $ 203,110 Commercial Real Estate: Owner Occupied 237,171 5,617 2,818 — 245,606 Non-Owner Occupied 588,633 2,155 1,434 — 592,222 Residential Real Estate 73,289 528 6,495 — 80,312 Real Estate Construction 145,251 — 9 — 145,260 Farm Real Estate 30,808 567 2,739 — 34,114 Consumer and Other 1,289 — 6 — 1,295 Total $ 1,276,090 $ 11,103 $ 14,726 $ — $ 1,301,919 Due to the business disruptions and shut-downs due to the Covid-19 pandemic, management offered payment deferments to a number of customers that had previously been current in all respects. The bank instituted an enhanced portfolio management process which included meeting with customers, requesting additional financial information and evaluating cashflow and adjusting risk ratings as conditions warrant. During this process systematically downgraded a significant number of loans to recognize the increased risk attributed to the business disruptions related to the pandemic. The majority of the loans downgraded did not meet the definition of impaired, but were added to the criticized category due to the additional deferrals or reduced financial performance. Additionally, the bank did offer longer term deferrals under Section 4013 of the Cares Act, that were also downgraded as appropriate. The majority of the deferrals made during the year resulted in continued payments of interest. The Bank believes it has prudently identified risk, assigned appropriate risk ratings, and has a comprehensive portfolio monitoring process to identify and quantify risk. The following tables present performing and nonperforming loans based solely on payment activity for the years ended December 31, 2020 and December 31, 2019 that have not been assigned an internal risk grade. The types of loans presented here are not assigned a risk grade unless there is evidence of a problem. Payment activity is reviewed by management on a monthly basis to evaluate performance. Loans are considered to be nonperforming when they become 90 days past due or if management thinks that we may not collect all of our principal and interest. Nonperforming loans also include certain loans that have been modified in Troubled Debt Restructurings (TDRs) where economic concessions have been granted to borrowers who have experienced or are expected to experience financial difficulties. These concessions typically result from the Company’s loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions due to economic status. Certain TDRs are classified as nonperforming at the time of restructure and may only be returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period, generally six months. NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) December 31, 2020 Residential Real Estate Real Estate Construction Consumer and Other Total Performing $ 354,987 $ 15,948 $ 11,976 $ 382,911 Nonperforming — — — — Total $ 354,987 $ 15,948 $ 11,976 $ 382,911 December 31, 2019 Residential Real Estate Real Estate Construction Consumer and Other Total Performing $ 382,720 $ 10,565 $ 13,766 $ 407,051 Nonperforming — — — — Total $ 382,720 $ 10,565 $ 13,766 $ 407,051 The following tables include an aging analysis of the recorded investment of past due loans outstanding as of December 31, 2020 and 2019. December 31, 2020 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Total Past Due Current Purchased Credit- Impaired Loans Total Loans Past Due 90 Days and Accruing Commercial & Agriculture $ 117 $ 25 $ 50 $ 192 $ 409,684 $ — $ 409,876 $ — Commercial Real Estate: Owner Occupied — 4 102 106 278,307 — 278,413 — Non-Owner Occupied — — 6 6 705,066 — 705,072 — Residential Real Estate 1,059 867 1,314 3,240 438,960 388 442,588 — Real Estate Construction — — — — 175,609 — 175,609 — Farm Real Estate — — 4 4 33,098 — 33,102 — Consumer and Other 59 1 16 76 12,766 — 12,842 — Total $ 1,235 $ 897 $ 1,492 $ 3,624 $ 2,053,490 $ 388 $ 2,057,502 $ — December 31, 2019 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Total Past Due Current Purchased Credit- Impaired Loans Total Loans Past Due 90 Days and Accruing Commercial & Agriculture $ 27 $ 35 $ 106 $ 168 $ 202,942 $ — $ 203,110 $ — Commercial Real Estate: Owner Occupied 453 63 663 1,179 244,427 — 245,606 — Non-Owner Occupied — — 8 8 592,214 — 592,222 — Residential Real Estate 2,399 198 1,775 4,372 458,193 467 463,032 — Real Estate Construction — — — — 155,825 — 155,825 — Farm Real Estate — — 7 7 34,107 — 34,114 — Consumer and Other 129 46 — 175 14,886 — 15,061 — Total $ 3,008 $ 342 $ 2,559 $ 5,909 $ 1,702,594 $ 467 $ 1,708,970 $ — NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) The following table presents loans on nonaccrual status, excluding purchased credit-impaired (PCI) loans, as of December 31, 2020 and 2019. 2020 2019 Commercial & Agriculture $ 139 $ 173 Commercial Real Estate: Owner Occupied 964 938 Non-Owner Occupied 6 8 Residential Real Estate 3,893 4,183 Real Estate Construction 7 9 Farm Real Estate 85 284 Consumer and Other 31 4 Total $ 5,125 $ 5,599 Nonaccrual Loans: Modifications: Loans modified in a TDR are typically already on non-accrual status and partial charge-offs have in some cases already been taken against the outstanding loan balance. As a result, loans modified in a TDR may have the financial effect of increasing the specific allowance associated with the loan. An allowance for impaired loans that have been modified in a TDR are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or the estimated fair value of the collateral, less any selling costs, if the loan is collateral dependent. Management exercises significant judgment in developing these estimates. TDRs accounted for $35 of the allowance for loan losses as of December 31, 2020, $91 as of December 31, 2019 and $141 as of December 31, 2018. There were no loans modified during the twelve month period ended December 31, 2020. Loan modifications that are considered TDRs completed during the twelve month periods ended December 31, 2019 and 2018 were as follows: NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) For the Twelve Month Period Ended December 31, 2019 Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Commercial & Agriculture — $ — $ — Commercial Real Estate: Owner Occupied — — — Non-Owner Occupied 1 382 382 Residential Real Estate — — — Real Estate Construction — — — Farm Real Estate — — — Consumer and Other — — — Total Loan Modifications 1 $ 382 $ 382 For the Twelve Month Period Ended December 31, 2018 Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Commercial & Agriculture — $ — $ — Commercial Real Estate: Owner Occupied — — — Non-Owner Occupied — — — Residential Real Estate 1 23 23 Real Estate Construction — — — Farm Real Estate 1 110 110 Consumer and Other — — — Total Loan Modifications 2 $ 133 $ 133 Recidivism, or the borrower defaulting on its obligation pursuant to a modified loan, results in the loan once again becoming a non-accrual loan. Recidivism occurs at a notably higher rate than do defaults on new originations loans, so modified loans present a higher risk of loss than do new origination loans. During the periods ended December 31, 2020, 2019 and 2018, there were no defaults on loans that were modified and considered TDRs during the previous twelve months. Impaired Loans: NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) Loan Modifications/Troubled Debt Restructurings During 2020, Civista modified 813 loans totaling $431,283, primarily consisting of the deferral of principal and/or interest payments. All of the loans modified were performing at December 31, 2019 and comply with the provisions of the Coronavirus Aid Relief, and Economic Security Act (“CARES Act”) to not be considered a troubled debt restructuring. While most of the loans that received some form of modification have returned to making payments, Civista has received customer deferral requests for another round of modifications on loans. As of December 31, 2020, Civista has 55 loans totaling $73,786 that remain on a CARES Act modification. Details with respect to loan modifications that remain on deferred status are as follows: Number of Percent of Type of Loan Loans Balance Loans Outstanding 1 (In thousands) Commercial & Agriculture 21 $ 4,069 0.22 % Commercial Real Estate: Owner Occupied 12 13,072 0.71 % Non-Owner Occupied 19 51,027 2.77 % Residential Real Estate 1 180 0.01 % Real Estate Construction 2 5,438 0.30 % Total 55 $ 73,786 4.01 % 1 NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) The following table includes the recorded investment and unpaid principal balances for impaired financing receivables, excluding PCI loans, with the associated allowance amount, if applicable, as of December 31, 2020 and 2019. December 31, 2020 December 31, 2019 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: Commercial & Agriculture $ — $ — $ 367 $ 367 Commercial Real Estate: Owner Occupied 757 757 168 168 Non-Owner Occupied 48 48 374 374 Residential Real Estate 915 940 1,571 1,643 Farm Real Estate 618 618 666 666 Total 2,338 2,363 3,146 3,218 With an allowance recorded: Commercial & Agriculture 74 74 $ 73 — — $ — Commercial Real Estate: Owner Occupied 223 223 5 258 258 9 Residential Real Estate 31 35 29 193 197 82 Farm Real Estate — — — — — — Total 328 332 107 451 455 91 Total: Commercial & Agriculture 74 74 73 367 367 — Commercial Real Estate: Owner Occupied 980 980 5 426 426 9 Non-Owner Occupied 48 48 — 374 374 — Residential Real Estate 946 975 29 1,764 1,840 82 Farm Real Estate 618 618 — 666 666 — Total $ 2,666 $ 2,695 $ 107 $ 3,597 $ 3,673 $ 91 NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) The following tables include the average recorded investment and interest income recognized for impaired financing receivables as of, and for the years ended, December 31, 2020, 2019 and 2018. For the year ended: December 31, 2020 December 31, 2019 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Commercial & Agriculture $ 88 $ 4 $ 367 $ 33 Commercial Real Estate: Owner Occupied 520 27 456 32 Non-Owner Occupied 243 16 308 20 Residential Real Estate 1,361 43 1,271 58 Farm Real Estate 647 26 683 29 Total $ 2,859 $ 116 $ 3,085 $ 172 For the year ended: December 31, 2018 Average Recorded Investment Interest Income Recognized Commercial & Agriculture $ 636 $ 25 Commercial Real Estate: Owner Occupied 610 33 Non-Owner Occupied 39 5 Residential Real Estate 1,519 75 Farm Real Estate 716 29 Total $ 3,520 $ 167 Foreclosed assets acquired in settlement of loans are carried at fair value less estimated costs to sell and are included in other assets on the Consolidated Balance Sheet. As of December 31, 2020 there were $31 of foreclosed assets included in other assets. As of December 31, 2019 there were no foreclosed assets included in other assets. As of December 31, 2020 and 2019, the Company had initiated formal foreclosure procedures on $741 and $1,022, respectively, of consumer residential mortgages. Changes in the amortizable yield for PCI loans were as follows, since acquisition: At December 31, 2020 At December 31, 2019 (In Thousands) (In Thousands) Balance at beginning of period $ 255 $ 336 Acquisition of PCI loans — — Accretion ( 336 ) ( 164 ) Transfers from non-accretable to accretable 306 83 Balance at end of period $ 225 $ 255 NOTE 5 - ALLOWANCE FOR LOAN LOSSES (Continued) The following table presents additional information regarding loans acquired and accounted for in accordance with ASC 310-30: At December 31, 2020 At December 31, 2019 Acquired Loans with Specific Evidence of Deterioration of Credit Quality (ASC 310-30) Acquired Loans with Specific Evidence of Deterioration of Credit Quality (ASC 310-30) (In Thousands) Outstanding balance $ 687 $ 1,149 Carrying amount 388 467 There was no allowance for loan losses recorded for acquired loans with or without specific evidence of deterioration in credit quality as of December 31, 2020 and 2019, respectively.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	12 Months Ended
Other Comprehensive Income (Loss)	Dec. 31, 2020
Equity [Abstract]
Other Comprehensive Income (Loss)	NOTE 6 - OTHER COMPREHENSIVE INCOME (LOSS) The following table presents the components of other comprehensive income (loss), net of tax, as of December 31, 2020, 2019 and 2018: Before Tax Tax Effect Net of Tax Year Ended December 31, 2020 Net unrealized Gains (Losses) on Investment Securities: Other comprehensive income (loss) before reclassifications $ 10,935 $ 2,297 $ 8,638 Amounts reclassified from accumulated other comprehensive income (loss) ( 94 ) ( 20 ) ( 74 ) Net Unrealized Gains on Investment Securities 10,841 2,277 8,564 Defined Benefit Plans: Other comprehensive income (loss) before reclassifications ( 1,326 ) ( 279 ) ( 1,047 ) Amounts reclassified from accumulated other comprehensive income (loss) 289 61 228 Defined Benefit Plans, Net ( 1,037 ) ( 218 ) ( 819 ) Other Comprehensive Income $ 9,804 $ 2,059 $ 7,745 Year Ended December 31, 2019 Net unrealized Gains (Losses) on Investment Securities: Other comprehensive income (loss) before reclassifications $ 13,368 $ 2,807 $ 10,561 Amounts reclassified from accumulated other comprehensive income (loss) ( 32 ) ( 7 ) ( 25 ) Net Unrealized Gains on Investment Securities 13,336 2,800 10,536 Defined Benefit Plans: Other comprehensive income (loss) before reclassifications ( 2,953 ) ( 620 ) ( 2,333 ) Amounts reclassified from accumulated other comprehensive income (loss) 156 33 123 Defined Benefit Plans, Net ( 2,797 ) ( 587 ) ( 2,210 ) Other Comprehensive Income $ 10,539 $ 2,213 $ 8,326 Year Ended December 31, 2018 Net unrealized Gains (Losses) on Investment Securities: Other comprehensive income (loss) before reclassifications $ ( 1,122 ) $ ( 236 ) $ ( 886 ) Amounts reclassified from accumulated other comprehensive income (loss) 413 87 326 Reclassification of equity securities from accumulated other comprehensive income (loss) ( 352 ) ( 74 ) ( 278 ) Net Unrealized Losses on Investment Securities ( 1,061 ) ( 223 ) ( 838 ) Defined Benefit Plans: Other comprehensive income (loss) before reclassifications 497 104 393 Amounts reclassified from accumulated other comprehensive income (loss) 149 32 117 Defined Benefit Plans, Net 646 136 510 Other Comprehensive Loss $ ( 415 ) $ ( 87 ) $ ( 328 ) NOTE 6 - OTHER COMPREHENSIVE INCOME (LOSS ) (Continued) The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax, as of December 31, 2020, 2019 and 2018. For the Year Ended December 31, 2020 For the Year Ended December 31, 2019 For the Year Ended December 31, 2018 Unrealized Gains and Losses on Available for Sale Securities Defined Benefit Pension Items Total Unrealized Gains and Losses on Available for Sale Securities Defined Benefit Pension Items Total Unrealized Gains and Losses on Available for Sale Securities Defined Benefit Pension Items Total Beginning balance $ 12,883 $ ( 6,009 ) $ 6,874 $ 2,347 $ ( 3,799 ) $ ( 1,452 ) $ 3,185 $ ( 4,309 ) $ ( 1,124 ) Other comprehensive income (loss) before reclassifications 8,638 ( 1,047 ) 7,591 10,561 ( 2,333 ) 8,228 ( 886 ) 393 ( 493 ) Amounts reclassified from accumulated other comprehensive income (loss) ( 74 ) 228 154 ( 25 ) 123 98 326 117 443 Net current-period other comprehensive income (loss) 8,564 ( 819 ) 7,745 10,536 ( 2,210 ) 8,326 ( 560 ) 510 ( 50 ) Reclassification of equity securities from accumulated other comprehensive income (loss) — — — — — — ( 278 ) — ( 278 ) Ending balance $ 21,447 $ ( 6,828 ) $ 14,619 $ 12,883 $ ( 6,009 ) $ 6,874 $ 2,347 $ ( 3,799 ) $ ( 1,452 ) NOTE 6 - OTHER COMPREHENSIVE INCOME (LOSS ) (Continued) The following table presents the amounts reclassified out of each component of accumulated other comprehensive loss as of December 31, 2020, 2019 and 2018. Amount Reclassified from Accumulated Other Comprehensive Loss (a) For the year ended December 31, Details about Accumulated Other Comprehensive Income (Loss) Components 2020 2019 2018 Affected Line Item in the Statement Where Net Income is Presented Unrealized gains (losses) on available-for-sale securities $ 94 $ 32 $ ( 413 ) Net gain (loss) on sale of securities Tax effect ( 20 ) ( 7 ) 87 Income taxes 74 25 ( 326 ) Amortization of defined benefit pension items Actuarial losses ( 289 ) (b) ( 156 ) (b) ( 149 ) (b) Other operating expenses Tax effect 61 33 32 Income taxes ( 228 ) ( 123 ) ( 117 ) Total reclassifications for the period $ ( 154 ) $ ( 98 ) $ ( 443 ) (a) Amounts in parentheses indicate expenses and other amounts indicate income. (b) These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost.

Premises and Equipment

Premises and Equipment	12 Months Ended
Premises and Equipment	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Premises and Equipment	NOTE 7 - PREMISES AND EQUIPMENT Year-end premises and equipment were as follows: At December 31, 2020 2019 Land and improvements $ 6,879 $ 6,651 Buildings and improvements 28,835 28,047 Furniture and equipment 22,849 21,988 Total 58,563 56,686 Accumulated depreciation ( 35,983 ) ( 33,815 ) Premises and equipment, net $ 22,580 $ 22,871 Depreciation expense was $2,253, $2,240 and $1,515 for 2020, 2019 and 2018, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
Goodwill and Intangible Assets	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 8 - GOODWILL AND INTANGIBLE ASSETS There was no change in the carrying amount of goodwill of $76,851 for the year ended December 31, 2020 and December 31, 2019. Management performs an evaluation of goodwill for impairment on an annual basis, or more frequently if events or changes in circumstances indicate that the asset might be impaired. Management performed an evaluation of the Company’s goodwill during the fourth quarter of 2020. Based on this test, management concluded that the Company’s goodwill was not impaired at December 31, 2020. Acquired intangible assets were as follows as of year-end. 2020 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Core deposit intangible assets(1): Core deposit intangibles 14,792 8,963 5,829 14,792 8,049 6,743 Total core deposit intangible assets $ 14,792 $ 8,963 $ 5,829 $ 14,792 $ 8,049 $ 6,743 (1) Excludes fully amortized core deposit intangible assets Aggregate core deposit intangible amortization expense was $913, $945 and $366 for 2020, 2019 and 2018, respectively. Activity for mortgage servicing rights (MSRs) and the related valuation allowance follows: 2020 2019 Mortgage Servicing Rights: Beginning of year $ 1,562 $ 1,664 Additions 1,310 247 Disposals — — Amortized to expense 524 247 Other Charges — — Change in valuation allowance 102 102 End of year $ 2,246 $ 1,562 Valuation allowance: Beginning of year $ 102 $ — Additions expensed 162 102 Reductions credited to operations ( 60 ) — Direct write-offs — — End of year $ 204 $ 102 Aggregate mortgage servicing rights (MSRs) amortization was $524, $247 and $126 for 2020, 2019 and 2018, respectively. The fair value of servicing rights was $2,245 and $1,562 at year-end 2020 and 2019. Fair value at year-end 2020 was determined using a discount rate of 12.0%, prepayment speeds ranging from 12.0% to 50.0%, depending on the stratification of the specific right, and a weighted average default rate of 0.93%. Fair value at year-end 2019 was determined using a discount rate of 12.0%, prepayment speeds ranging from 11.4% to 50.0%, depending on the stratification of the specific right, and a default rate of 0.85%. NOTE 8 - GOODWILL AND INTANGIBLE ASSETS (Continued) Estimated amortization expense for each of the next five years and thereafter is as follows: MSRs Core deposit intangibles Total 2021 $ 126 $ 891 $ 1,017 2022 126 868 994 2023 125 841 966 2024 124 804 928 2025 124 708 832 Thereafter 1,621 1,717 3,338 $ 2,246 $ 5,829 $ 8,075

Interest-Bearing Deposits

Interest-Bearing Deposits	12 Months Ended
Interest-Bearing Deposits	Dec. 31, 2020
Deposits [Abstract]
Interest-Bearing Deposits	NOTE 9 - INTEREST-BEARING DEPOSITS Interest-bearing deposits as of December 31, 2020 and 2019 were as follows: 2020 2019 Demand $ 410,139 $ 301,674 Savings and Money markets 771,612 588,697 Certificates of Deposit: $250 and over 70,989 58,290 Other 169,453 168,928 Individual Retirement Accounts 46,396 48,622 Total $ 1,468,589 $ 1,166,211 Scheduled maturities of certificates of deposit, including IRAs at December 31, 2020 were as follows: 2021 $ 209,556 2022 58,234 2023 11,603 2024 3,490 2025 2,729 Thereafter 1,226 Total $ 286,838 Deposits from the Company’s principal officers, directors, and their affiliates at year-end 2020 and 2019 were $12,487 and $8,917, respectively. As of December 31, 2020, CDs and IRAs totaling $74,777 met or exceeded the FDIC’s insurance limit of $250,000.

Short-Term Borrowings

Short-Term Borrowings	12 Months Ended
Short-Term Borrowings	Dec. 31, 2020
Debt Disclosure [Abstract]
Short-Term Borrowings	NOTE 10 - SHORT-TERM BORROWINGS Short-term borrowings, which consist of federal funds purchased and other short-term borrowings are summarized as follows: At December 31, 2020 At December 31, 2019 Federal Funds Purchased Short-term Borrowings Federal Funds Purchased Short-term Borrowings Outstanding balance at year end $ — $ — $ — $ 101,500 Maximum indebtedness during the year 50,000 102,700 20,000 192,700 Average balance during the year 288 8,151 137 112,088 Average rate paid during the year 0.35 % 1.64 % 2.19 % 2.32 % Interest rate on year end balance — — — 1.63 % At December 31, 2018 Federal Funds Purchased Short-term Borrowings Outstanding balance at year end $ — $ 188,600 Maximum indebtedness during the year 20,000 225,300 Average balance during the year 116 113,520 Average rate paid during the year 2.58 % 2.07 % Interest rate on year end balance — 2.45 % Average balances during the year represent daily averages. Average interest rates represent interest expense divided by the related average balances. These borrowing transactions can range from overnight to six months in maturity. The average maturity was one day at December 31, 2019.

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	12 Months Ended
Federal Home Loan Bank Advances	Dec. 31, 2020
Advances From Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances	NOTE 11 - FEDERAL HOME LOAN BANK ADVANCES Long-term advances from the FHLB were $125,000 at December 31, 2020 and December 31, 2019. Outstanding balances have maturity dates ranging from May 2029 to October 2029 with fixed rates ranging from 1.03% to 2.05%. The average rate on outstanding advances was 1.44% at December 31, 2020. Outstanding advances are prepayable in whole only and are subject to a termination fee. The Company has two long-term advances, both have put options. The first advance in the amount of $75,000 is puttable October 22, 2020 and the second advance in the amount of $50,000 is puttable May 23, 2024. Scheduled principal reductions of FHLB advances outstanding at December 31, 2020 were as follows: 2029 $ 125,000 Total $ 125,000 In addition to the borrowings, the Company had outstanding letters of credit with the FHLB totaling $20,000 at year-end 2020 and 2019, respectively, used for pledging to secure public funds. FHLB borrowings and the letters of credit were collateralized by FHLB stock and by $217,500 and $369,750 of residential mortgage loans under a blanket lien arrangement at year-end 2020 and 2019, respectively. The Company had a FHLB maximum borrowing capacity of $612,308 as of December 31, 2020, with remaining borrowing capacity of approximately $467,308. The borrowing arrangement with the FHLB is subject to annual renewal. The maximum borrowing capacity is recalculated at least quarterly.

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	12 Months Ended
Securities Sold Under Agreements to Repurchase	Dec. 31, 2020
Brokers And Dealers [Abstract]
Securities Sold Under Agreements to Repurchase	NOTE 12 - SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE Securities sold under agreements to repurchase are used to facilitate the needs of our customers as well as to facilitate our short-term funding needs. Securities sold under repurchase agreements are carried at the amount of cash received in association with the agreement. We continuously monitor the collateral levels and may be required, from time to time, to provide additional collateral based on the fair value of the underlying securities. Securities pledged as collateral under repurchase agreements are maintained with our safekeeping agents. The following table presents detail regarding the securities pledged as collateral under repurchase agreements as of December 31, 2020 and 2019. All of the repurchase agreements are overnight agreements. December 31, 2020 December 31, 2019 Securities pledged for repurchase agreements: U.S. Treasury securities $ 899 $ 810 Obligations of U.S. government agencies 28,015 17,864 Total securities pledged $ 28,914 $ 18,674 Gross amount of recognized liabilities for repurchase agreements $ 28,914 $ 18,674 Amounts related to agreements not included in offsetting disclosures above $ — $ — Information concerning securities sold under agreements to repurchase was as follows: 2020 2019 2018 Outstanding balance at year end $ 28,914 $ 18,674 $ 22,199 Average balance during the year 24,390 18,321 18,456 Average interest rate during the year 0.10 % 0.10 % 0.10 % Maximum month-end balance during the year $ 31,885 $ 21,970 $ 22,199 Weighted average interest rate at year end 0.10 % 0.10 % 0.10 %

Subordinated Debentures

Subordinated Debentures	12 Months Ended
Subordinated Debentures	Dec. 31, 2020
Brokers And Dealers [Abstract]
Subordinated Debentures	NOTE 13 - SUBORDINATED DEBENTURES Trusts formed by the Company in March of 2002 and March of 2003 issued floating rate trust preferred securities, in the amounts of $5,000 and $7,500, respectively, through special purpose entities as part of pooled offerings of such securities. The Company issued subordinated debentures to the trusts in exchange for the proceeds of the offerings, which debentures represent the sole assets of the trusts. The Company may redeem the subordinated debentures, in whole but not in part, at face value. In March 2007, the Company elected to redeem and refinance the $5,000 floating rate subordinated debenture. The refinancing was done at face value and resulted in a 2.00% reduction in the floating rate. The new subordinated debenture has a 30-year maturity and is redeemable, in whole or in part, anytime without penalty. The replacement subordinated debenture does not have any deferred issuance cost associated with it. The interest rate at December 31, 2019 on the $7,500 debenture was 3.38% and the $5,000 debenture was 1.85%. Additionally, the Company formed an additional trust in September of 2004 that issued $12,500 of 6.05% fixed rate trust preferred securities for five years, then becoming floating rate trust preferred securities, through a special purpose entity as part of a pooled offering of such securities. The Company issued subordinated debentures to the trusts in exchange for the proceeds of the offerings, which debentures represent the sole assets of the trusts. The Company may redeem the subordinated debentures at face value without penalty. The current rate on the $12,500 subordinated debenture is 2.48%. NOTE 13 - SUBORDINATED DEBENTURES (Continued) Finally, the Company acquired two additional trust preferred securities as part of its acquisition of Futura Banc Corp (Futura) in December 2007. Futura TPF Trust I and Futura TPF Trust II were formed in June of 2005 in the amounts of $2,500 and $1,927, respectively. Futura had issued subordinated debentures to the trusts in exchange for ownership of all of the common security of the trusts and the proceeds of the preferred securities sold by the trusts. The Company may redeem the subordinated debentures, in whole or in part, in a principal amount with integral multiples of $1,000, at 100% of the principal amount, plus accrued and unpaid interest. The subordinated debentures mature on June 15, 2035. The subordinated debentures are also redeemable in whole or in part from time to time, upon the occurrence of specific events defined within the trust indenture. The current rate on the $2,500 subordinated debenture is variable at 1.91%. In June 2010, the rate on the $1,927 subordinated debenture switched from a fixed rate to a floating rate. The current rate on the $1,927 subordinated debenture is 1.91%.

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 14 - INCOME TAXES Income taxes were as follows for the years ended December 31: 2020 2019 2018 Current $ 6,947 $ 4,713 $ 2,444 State 270 307 45 Deferred ( 2,277 ) 663 151 Income taxes $ 4,940 $ 5,683 $ 2,640 Effective tax rates differed from the statutory federal income tax rate of 21% in 2020, 2019 and 2018 due to the following: 2020 2019 2018 Income taxes computed at the statutory federal tax rate $ 7,798 $ 8,308 $ 3,524 Add (subtract) tax effect of: Nontaxable interest income, net of nondeductible interest expense ( 1,293 ) ( 1,194 ) ( 834 ) Low income housing tax credit ( 1,186 ) ( 903 ) ( 903 ) Cash surrender value of BOLI ( 205 ) ( 211 ) ( 143 ) Nondeductible merger costs — — 1,034 Change in tax position BOLI — ( 353 ) — Other ( 174 ) 36 ( 38 ) Income tax expense $ 4,940 $ 5,683 $ 2,640 NOTE 14 - INCOME TAXES (Continued) Year-end deferred tax assets and liabilities were due to the following: 2020 2019 Deferred tax assets Allowance for loan losses $ 5,256 $ 3,245 Deferred compensation 1,201 1,191 Pension costs 304 81 Intangible assets 312 394 Purchase accounting adjustments — 226 Net operating loss carryforward 509 1,081 Deferred loan fees 1,260 102 Other 745 118 Deferred tax asset 9,587 6,438 Deferred tax liabilities Tax depreciation in excess of book depreciation ( 851 ) ( 808 ) Discount accretion on securities ( 10 ) ( 18 ) FHLB stock dividends ( 969 ) ( 969 ) Unrealized gain on securities available for sale ( 5,606 ) ( 3,424 ) Pension costs — — Prepaids ( 325 ) ( 326 ) BOLI — — Other ( 979 ) ( 359 ) Deferred tax liability ( 8,740 ) ( 5,904 ) Net deferred tax asset $ 847 $ 534 No valuation allowance was established at December 31, 2020 and 2019, due to the Company’s ability to carryforward net operating losses to taxes paid in future years and certain tax strategies, coupled with the anticipated future income as evidenced by the Company’s earning potential. The Company and its subsidiaries are subject to U.S. federal income tax. The Company is subject to tax in Ohio based upon its net worth and in Indiana based upon its net income. There is currently no liability for uncertain tax positions and no known unrecognized tax benefits. The Company’s federal tax returns for taxable years through 2016 have been closed for purposes of examination by the Internal Revenue Service.

Retirement Plans

Retirement Plans	12 Months Ended
Retirement Plans	Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]
Retirement Plans	NOTE 15 - RETIREMENT PLANS The Company sponsors a savings and retirement 401(k) plan, which covers all employees who meet certain eligibility requirements and who choose to participate in the plan. The matching contribution to the 401(k) plan was $1,226, $1,074 and $892 in 2020, 2019 and 2018, respectively. The Company’s matching contribution is 100% of an employee’s first three percent contributed and 50% of the next two percent contributed. The Company also sponsors a pension plan which is a noncontributory defined benefit retirement plan for all employees who have attained the age of 20 1 ⁄ 2, completed six months of service and work 1,000 or more hours per year. Annual payments, subject to the maximum amount deductible for federal income tax purposes, are made to a pension trust fund. In 2006, the Company amended the pension plan to provide that no employee could be added as a participant to the pension plan after December 31, 2006. In April 2014, the Company amended the pension plan again to provide that no additional benefits would accrue beyond April 30, 2014. NOTE 15 - RETIREMENT PLANS (Continued) In October 2015, the Company, on behalf of it and its subsidiaries, entered into Pension Shortfall Agreements (the “Shortfall Agreements”) with ten employees of the Bank. When the Company ceased accruals to its defined benefit pension plan on April 30, 2014, the circumstances of some participants with limited periods until their anticipated retirement dates would not permit them to use other available alternatives to make up for the shortfall in their expected pension. The Company calculated the total amount of the shortfall for each of the referenced individuals after considering its contributions to other retirement benefits. Pension shortfall expense was $130 in 2020, $161 in 2019 and $180 in 2018. Included in pension shortfall expense was interest expense, totaling $9, $20 and $24 in 2020, 2019 and 2018, respectively, which was also recorded in and credited to the accounts of the ten individuals covered by this plan. Information about the pension plan is as follows: 2020 2019 Change in benefit obligation: Beginning benefit obligation $ 15,570 $ 13,338 Service cost — — Interest cost 484 479 Curtailment gain — — Settlement loss — — Actuarial (gain)/loss 1,898 3,546 Benefits paid ( 1,296 ) ( 1,793 ) Settlement payments — — Ending benefit obligation 16,656 15,570 Change in plan assets, at fair value: Beginning plan assets 15,183 15,572 Actual return 1,370 1,404 Employer contribution — — Benefits paid ( 1,296 ) ( 1,793 ) Settlement payments — — Administrative expenses — — Ending plan assets 15,257 15,183 Funded status at end of year $ ( 1,399 ) $ ( 387 ) Amounts recognized in accumulated other comprehensive income (loss) at December 31, consist of unrecognized actuarial loss of $6,828, net of $1,815 tax in 2020 and $6,009, net of $1,597 tax in 2019. The accumulated benefit obligation for the defined benefit pension plan was $16,656 at December 31, 2020 and $15,570 at December 31, 2019. NOTE 15 - RETIREMENT PLANS (Continued) The components of net periodic pension expense were as follows: 2020 2019 2018 Service cost $ — $ — $ — Interest cost 484 479 627 Expected return on plan assets ( 748 ) ( 811 ) ( 1,355 ) Net amortization and deferral 289 156 149 Net periodic pension cost (benefit) 25 ( 176 ) ( 579 ) Additional loss due to settlement — — 1,188 Total pension cost (benefit) $ 25 $ ( 176 ) $ 609 Net loss (gain) recognized in other comprehensive income $ 986 $ 2,798 $ ( 1,453 ) Total recognized in net periodic benefit cost and other comprehensive loss (before tax) $ 1,011 $ 2,622 $ ( 2,032 ) The components of net periodic benefit cost other than the service cost component are included in the line item “other operating expenses” in the Consolidated Statement of Operations. The estimated net loss for the defined benefit pension plan that will be amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year is $289. The Company incurred settlement costs in 2020, 2019 and 2018 of $0, $0 and $1,188, respectively. The weighted average assumptions used to determine benefit obligations at year-end were as follows: 2020 2019 2018 Discount rate on benefit obligation 2.39 % 3.13 % 4.14 % Long-term rate of return on plan assets 4.44 % 4.96 % 7.00 % Rate of compensation increase 0.00 % 0.00 % 0.00 % The weighted average assumptions used to determine net periodic pension cost were as follows: 2020 2019 2018 Discount rate on benefit obligation 3.13 % 4.14 % 3.51 % Long-term rate of return on plan assets 4.96 % 7.00 % 7.00 % Rate of compensation increase 0.00 % 0.00 % 0.00 % The Company uses long-term market rates to determine the discount rate on the benefit obligation. Declines in the discount rate lead to increases in the actuarial loss related to the benefit obligation. The expectation for long-term rate of return on the pension assets and the expected rate of compensation increases are reviewed periodically by management in consultation with outside actuaries and primary investment consultants. Factors considered in setting and adjusting these rates are historic and projected rates of return on the portfolio and historic and estimated rates of increases of compensation. Since the pension plan is frozen, the rate of compensation increase used to determine the benefit obligation for 2020, 2019 and 2018 was zero. NOTE 15 - RETIREMENT PLANS (Continued) The Company’s pension plan asset allocation at year-end 2020 and 2019 and target allocation for 2020 by asset category are as follows: Target Allocation Percentage of Plan Assets at Year-end Asset Category 2021 2020 2019 Equity securities 0-30% 20.0 % 20.0 % Debt securities 70-100 80.0 80.0 Total 100.0 % 100.0 % The Company developed the pension plan investment policies and strategies for plan assets with its pension management firm. The assets are currently invested in seven diversified investment funds, which include four equity funds and three bond funds. The long-term guidelines from above were created to maximize the return on portfolio assets while reducing the risk of the portfolio. The management firm may allocate assets among the separate accounts within the established long-term guidelines. Transfers among these accounts will be at the management firm’s discretion based on their investment outlook and the investment strategies that are outlined at periodic meetings with the Company. The expected long-term rate of return on the plan assets was 4.44% in 2020 and 4.96% in 2019. This return is based on the expected return for each of the asset categories, weighted based on the target allocation for each class. The Company does not expect to make any contribution to its pension plan in 2021. Employer contributions totaled $0 in 2020 and 2019. An increase in the benefit obligations led to an increase in the deficit from $387 at December 31, 2019 to a deficit of $1,399 at December 31, 2020. Common/Collective Trust Funds Valued at the daily NAV as reported by the funds. These funds are not traded in an active market or exchange, and the NAV per unit is calculated by dividing the net assets of the fund by the number of units outstanding, which includes observable inputs. The method described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Plan believes its valuation method is appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. Certain investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient are not required to be categorized in the fair value hierarchy tables. Fair Value of Investments in Entities That Use NAV The following table summarizes investments measured at fair value based on NAV per share as of December 31, 2020 and 2019, respectively: December 31, 2020 Fair Value Unfunded Commitments Redemption Frequency (if currently eligible) Redemption Notice Period Common/collective trust funds $ 15,257 N/A Daily Daily NOTE 15 - RETIREMENT PLANS (Continued) December 31, 2019 Fair Value Unfunded Commitments Redemption Frequency (if currently eligible) Redemption Notice Period Common/collective trust funds $ 15,183 N/A Daily Daily The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Pension Plan believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. Expected benefit payments, which reflect expected future service, are as follows: 2021 $ 1,661 2022 275 2023 316 2024 355 2025 419 2026 through 2030 2,970 Total $ 5,996 Supplemental Retirement Plan Civista established a supplemental retirement plan (“SERP”) in 2013, which covers key members of management. Under the SERP, participants will receive annually, following retirement, a percentage of their base compensations at the time of their retirement for a maximum of ten years. The SERP liability recorded at December 31, 2020, was $3,097, compared to $2,836 at December 31, 2019. The expense related to the SERP was $429, $394 and $351 for 2020, 2019 and 2018, respectively. Distributions to participants made in 2020, 2019 and 2018 totaled $168, $128, and $87, respectively.

Equity Incentive Plan

Equity Incentive Plan	12 Months Ended
Equity Incentive Plan	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Equity Incentive Plan	NOTE 16 - EQUITY INCENTIVE PLAN At the Company’s 2014 annual meeting, the shareholders adopted the Company’s 2014 Incentive Plan (“2014 Incentive Plan”). The 2014 Incentive Plan authorizes the Company to grant options, stock awards, stock units and other awards for up to 375,000 common shares of the Company. There were 198,756 shares available for grants under this plan at December 31, 2020. No options had been granted under the 2014 Incentive Plan as of December 31, 2020 and 2019. In recent years, the Board of Directors has awarded restricted common shares to senior officers of the Company. The restricted shares vest ratably over a three-year During the twelve months ended December 31, 2020, 2019 and 2018, directors of the Company’s banking subsidiary, Civista, were paid a retainer in the form of non-restricted common shares of the Company. The aggregate common shares of 14,266, 8,946 and 7,071, respectively were issued to Civista directors as payment of their retainer for their service on the Civista Board of Directors. The issuances were expensed in their entirety when the shares were issued in the amounts of $196, $196 and $165, respectively. The Company includes share-based compensation for employees as “Compensation expense” in the Consolidated Statements of Operations. The following is a summary of the status of the Company’s restricted shares, and changes therein during the twelve months ended December 31, 2020: December 31, 2020 Number of Restricted Shares Weighted Average Grant Date Fair Value Nonvested at beginning of period 44,027 $ 20.48 Granted 26,979 21.26 Vested ( 16,732 ) 20.36 Forfeited — — Nonvested at end of period 54,274 20.90 NOTE 16 - EQUITY INCENTIVE PLAN (Continued) The following is a summary of the status of the Company’s awarded restricted shares as of December 31, 2020: At December 31, 2020 Date of Award Shares Remaining Expense Remaining Vesting Period (Years) January 15, 2016 2,056 $ — 0.00 March 20, 2017 2,388 24 1.00 April 10, 2018 2,643 — 0.00 April 10, 2018 4,670 62 2.00 March 14, 2019 6,796 63 1.00 March 14, 2019 8,742 119 3.00 March 14, 2020 13,997 186 2.00 March 14, 2020 12,982 197 4.00 54,274 $ 651 2.30 During the twelve months ended December 31, 2020, 2019 and 2018, the Company recorded share-based compensation expense of $421, $335 and $263, respectively and director retainer fees of $196, $196 and $165, respectively, for shares granted under the 2014 Incentive Plan. At December 31, 2020, the total compensation cost related to unvested awards not yet recognized is $651, which is expected to be recognized over the weighted average remaining life of the grants of 2.30 years.

Fair Value Measurement

Fair Value Measurement	12 Months Ended
Fair Value Measurement	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurement	NOTE 17 - FAIR VALUE MEASUREMENT U.S. generally accepted accounting principles establish a hierarchal disclosure framework associated with the level of observable pricing utilized in measuring assets and liabilities at fair value. The three broad levels defined by the hierarchy are as follows: Level 1: Quoted prices for identical assets in active markets that are identifiable on the measurement date; Level 2: Significant other observable inputs, such as quoted prices for similar assets, quoted prices in markets that are not active and other inputs that are observable or can be corroborated by observable market data; Level 3: Significant unobservable inputs that reflect the Company’s own view about the assumptions that market participants would use in pricing an asset. Securities: Equity securities: Fair value swap asset/liability: NOTE 17 - FAIR VALUE MEASUREMENT (Continued) Impaired loans: Other real estate owned: Assets and liabilities measured at fair value are summarized below. Fair Value Measurements at December 31, 2020 Using: (Level 1) (Level 2) (Level 3) Assets measured at fair value on a recurring basis: Securities available for sale U.S. Treasury securities and obligations of U.S. Government agencies $ — $ 21,693 $ — Obligations of states and political subdivisions — 229,012 — Mortgage-backed securities in government sponsored entities — 112,759 — Total securities available for sale — 363,464 — Equity securities — 886 — Swap asset — 21,700 — Liabilities measured at fair value on a recurring basis: Swap liability — 21,764 — Assets measured at fair value on a nonrecurring basis: Impaired Loans $ — $ — $ 1 Other Real Estate Owned — — 31 NOTE 17 - FAIR VALUE MEASUREMENT (Continued) Fair Value Measurements at December 31, 2019 Using: (Level 1) (Level 2) (Level 3) Assets measured at fair value on a recurring basis: Securities available for sale U.S. Treasury securities and obligations of U.S. Government agencies $ — $ 19,601 $ — Obligations of states and political subdivisions — 206,034 — Mortgage-backed securities in government sponsored entities — 132,864 — Total securities available for sale — 358,499 — Equity securities — 1,191 — Swap asset — 8,918 — Liabilities measured at fair value on a recurring basis: Swap liability — 8,918 — Assets measured at fair value on a nonrecurring basis: Impaired Loans $ — $ — $ 1 The following tables presents quantitative information about the Level 3 significant unobservable inputs for assets and liabilities measured at fair value on a nonrecurring basis at December 31, 2020 and 2019. Quantitative Information about Level 3 Fair Value Measurements December 31, 2020 Fair Value Valuation Technique Unobservable Input Range Weighted Average Impaired loans $ 1 Appraisal of collateral Appraisal adjustments 0% - 30% 19% Holding period 23 months 23 months Other real estate owned $ 31 Appraisal of collateral Appraisal adjustments 10% 10% Quantitative Information about Level 3 Fair Value Measurements December 31, 2019 Fair Value Valuation Technique Unobservable Input Range Weighted Average Impaired loans $ 1 Appraisal of collateral Appraisal adjustments 30% 30% Holding period 22 months 22 months NOTE 17 - FAIR VALUE MEASUREMENT (Continued) The carrying amount and fair value of financial instruments carried at amortized cost were as follows: December 31, 2020 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from financial institutions $ 139,522 $ 139,522 $ 139,522 $ — $ — Other securities 20,537 20,537 20,537 — — Loans, held for sale 7,001 7,141 7,141 — — Loans, net of allowance for loan losses 2,032,474 2,063,249 — — 2,063,249 Bank owned life insurance 45,976 45,976 45,976 — — Accrued interest receivable 9,421 9,421 9,421 — — Financial Liabilities: Nonmaturing deposits 1,902,560 1,902,560 1,902,560 — — Time deposits 286,838 288,298 — — 288,298 Long-term FHLB advances 125,000 130,942 — — 130,942 Securities sold under agreement to repurchase 28,914 28,914 28,914 — — Subordinated debentures 29,427 31,479 — — 31,479 Accrued interest payable 204 204 204 — — December 31, 2019 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from financial institutions $ 48,535 $ 48,535 $ 48,535 $ — $ — Other securities 20,280 20,280 20,280 — — Loans, held for sale 2,285 2,331 2,331 — — Loans, net of allowance for loan losses 1,694,203 1,713,863 — — 1,713,863 Bank owned life insurance 44,999 44,999 44,999 — — Accrued interest receivable 7,093 7,093 7,093 — — Financial Liabilities: Nonmaturing deposits 1,402,924 1,402,924 1,402,924 — — Time deposits 275,840 276,616 — — 276,616 Short-term FHLB advances 101,500 101,500 101,500 — — Long-term FHLB advances 125,000 123,893 — — 123,893 Securities sold under agreement to repurchase 18,674 18,674 18,674 — — Subordinated debentures 29,427 34,452 — — 34,452 Accrued interest payable 277 277 277 — —

Commitments, Contingencies and

Commitments, Contingencies and Off-Balance-Sheet Risk	12 Months Ended
Commitments, Contingencies and Off-Balance-Sheet Risk	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments, Contingencies and Off-Balance-Sheet Risk	NOTE 18 - COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET RISK Some financial instruments, such as loan commitments, credit lines, letters of credit, and overdraft protection are issued to meet customer financing needs. These are agreements to provide credit or to support the credit of others, as long as conditions established in the contract are met, and usually have expiration dates. Commitments may expire without being used. Off-balance-sheet risk to credit loss exists up to the face amount of these instruments, although material losses are not anticipated. The same credit policies are used to make such commitments as are used for loans, including obtaining collateral at exercise of the commitment. NOTE 18 - COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET RISK (Continued) The contractual amount of financial instruments with off-balance-sheet risk was as follows at year-end. 2020 2019 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to extend credit: Lines of credit and construction loans $ 38,474 $ 427,864 $ 15,155 $ 396,516 Overdraft protection 6 41,707 5 37,286 Letters of credit 615 986 624 776 $ 39,095 $ 470,557 $ 15,784 $ 434,578 Commitments to make loans are generally made for a period of one year or less. Fixed-rate loan commitments included above had interest rates ranging from 3.50% to 8.00% at December 31, 2020 and 4.50% to 8.00% at December 31, 2019. Maturities extend up to 30 years. Civista is required to maintain certain reserve balances on hand in accordance with the Federal Reserve Board requirements. The average reserve balance maintained in accordance with such requirements was $0 on December 31, 2020 and $7,127 on December 31, 2019.

Capital Requirements and Restri

Capital Requirements and Restriction on Retained Earnings	12 Months Ended
Capital Requirements and Restriction on Retained Earnings	Dec. 31, 2020
Capital Requirements And Restriction On Retained Earnings [Abstract]
Capital Requirements and Restriction on Retained Earnings	NOTE 19 - CAPITAL REQUIREMENTS AND RESTRICTION ON RETAINED EARNINGS CBI and Civista (collectively, the “Companies”) are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory-and possibly additional discretionary-actions by regulators that, if undertaken, could have a direct material effect on the financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Companies must meet specific capital guidelines that involve quantitative measures of the Companies’ assets, liabilities, and certain off-balance-sheet items as calculated under U.S. GAAP, regulatory reporting requirements, and regulatory capital standards. The Companies’ capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures established by regulatory capital standards to ensure capital adequacy require the Companies to maintain minimum amounts and ratios (set forth in the following table) of total and Tier 1 capital to risk-weighted assets, common equity Tier 1 capital to total risk-weighted assets, and of Tier 1 capital to average assets. Management believes, as of December 31, 2020, that the Companies met all capital adequacy requirements to which they were subject. NOTE 19 - CAPITAL REQUIREMENTS AND RESTRICTION ON RETAINED EARNINGS (Continued) As of December 31, 2020, and 2019, the most recent notification from the Federal Reserve Bank categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized the Companies must maintain minimum total risk-based capital, Tier 1 risk-based capital, common equity Tier 1 risk-based capital, and Tier 1 leverage ratios as set forth in the table below. There are no conditions or events since that notification that management believes have changed the institution’s category. The Company’s and Civista’s actual capital levels and minimum required capital levels at December 31, 2020 and 2019 were as follows: To Be Well Capitalized Under For Capital Prompt Corrective Actual Adequacy Purposes Action Purposes Amount Ratio Amount Ratio Amount Ratio 2020 Total Risk Based Capital Consolidated $ 307,504 16.0 % $ 153,810 8.0 % n/a n/a Civista 277,429 14.4 153,765 8.0 $ 192,206 10.0 % Tier I Risk Based Capital Consolidated 283,459 14.7 115,358 6.0 n/a n/a Civista 252,304 13.1 115,323 6.0 153,765 8.0 CET1 Risk Based Capital Consolidated 254,032 13.2 86,518 4.5 n/a n/a Civista 241,891 12.6 86,493 4.5 124,934 6.5 Leverage Consolidated 283,459 10.8 105,279 4.0 n/a n/a Civista 252,304 9.6 105,029 4.0 131,286 5.0 2019 Total Risk Based Capital Consolidated $ 285,268 16.1 % $ 141,506 8.0 % n/a n/a Civista 250,920 14.2 141,445 8.0 $ 176,807 10.0 % Tier I Risk Based Capital Consolidated 270,501 15.3 106,129 6.0 n/a n/a Civista 235,094 13.3 106,084 6.0 141,445 8.0 CET1 Risk Based Capital Consolidated 241,074 13.6 79,597 4.5 n/a n/a Civista 224,653 12.7 79,563 4.5 114,924 6.5 Leverage Consolidated 270,501 12.3 87,652 4.0 n/a n/a Civista 235,094 10.8 87,362 4.0 109,203 5.0 CBI’s primary source of funds for paying dividends to its shareholders and for operating expense is the cash accumulated from dividends received from Civista. Payment of dividends by Civista to CBI is subject to restrictions by Civista’s regulatory agencies. These restrictions generally limit dividends to the current and prior two years retained earnings as defined by the regulations. In addition, dividends may not reduce capital levels below minimum regulatory requirements. At December 31, 2020, Civista had $53,484 of net profits available to pay dividends to CBI without requiring regulatory approval.

Parent Company Only Condensed F

Parent Company Only Condensed Financial Information	12 Months Ended
Parent Company Only Condensed Financial Information	Dec. 31, 2020
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Parent Company Only Condensed Financial Information	NOTE 20 - PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION Condensed financial information of CBI follows: December 31, Condensed Balance Sheets 2020 2019 Assets: Cash $ 19,446 $ 24,089 Equity securities 886 1,191 Investment in bank subsidiary 344,948 319,714 Investment in nonbank subsidiaries 16,017 15,181 Other assets 1,575 1,683 Total assets $ 382,872 $ 361,858 Liabilities: Deferred income taxes and other liabilities $ 3,337 $ 2,305 Subordinated debentures 29,427 29,427 Total liabilities 32,764 31,732 Shareholders’ Equity: Common stock 277,039 276,422 Accumulated earnings 93,048 67,974 Treasury Stock ( 34,598 ) ( 21,144 ) Accumulated other comprehensive income 14,619 6,874 Total shareholders’ equity 350,108 330,126 Total liabilities and shareholders’ equity $ 382,872 $ 361,858 For the years ended December 31, Condensed Statements of Operations 2020 2019 2018 Dividends from bank subsidiaries $ 15,300 $ 13,300 $ 10,000 Dividends from non-bank subsidiaries 440 — — Interest expense ( 945 ) ( 1,423 ) ( 1,320 ) Pension expense ( 25 ) 176 199 Acquisition expense — — ( 10,738 ) Other expense, net ( 1,241 ) ( 1,107 ) ( 1,740 ) Income (loss) before equity in undistributed net earnings of subsidiaries 13,529 10,946 ( 3,599 ) Income tax benefit 475 494 1,751 Equity in undistributed net earnings of subsidiaries 18,188 22,438 15,987 Net income $ 32,192 $ 33,878 $ 14,139 Comprehensive income $ 39,937 $ 42,204 $ 14,089 NOTE 20 - PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION (Continued) For the years ended December 31, Condensed Statements of Cash Flows 2020 2019 2018 Operating activities: Net income $ 32,192 $ 33,878 $ 14,139 Adjustment to reconcile net income to net cash from operating activities: Change in other assets and other liabilities 1,925 4,437 794 Gain on sale of fixed assets — — ( 110 ) Equity in undistributed net earnings of subsidiaries ( 18,188 ) ( 22,438 ) ( 15,987 ) Net cash from (used for) operating activities 15,929 15,877 ( 1,164 ) Investing activities: Proceeds from sale of premises and equipment — — 899 Disposal of investment in subsidiary — 41 — Acquisition and additional capitalization of subsidiary, net of cash acquired — — ( 5,216 ) Net cash from (used for) investing activities — 41 ( 4,317 ) Financing activities: Cash paid on fractional shares on preferred stock conversion to common stock — ( 2 ) — Purchase of treasury stock ( 13,454 ) ( 3,909 ) — Payment to repurchase series B preferred stock — ( 402 ) — Cash dividends paid ( 7,118 ) ( 7,194 ) ( 4,749 ) Net cash used for financing activities ( 20,572 ) ( 11,507 ) ( 4,749 ) Net change in cash and cash equivalents ( 4,643 ) 4,411 ( 10,230 ) Cash and cash equivalents at beginning of year 24,089 19,678 29,908 Cash and cash equivalents at end of year $ 19,446 $ 24,089 $ 19,678

Preferred Shares

Preferred Shares	12 Months Ended
Preferred Shares	Dec. 31, 2020
Equity [Abstract]
Preferred Shares	NOTE 21 - PREFERRED SHARES On December 19, 2013, the Company completed the sale of 1,000,000 depositary shares, each representing a 1/40th ownership interest in a 6.50% Noncumulative Redeemable Convertible Perpetual Preferred Share, Series B, of the Company, with a liquidation preference of $1,000 per share (equivalent to $25.00 per depositary share). The Company sold the maximum of 1,000,000 depositary shares in the offering, resulting in gross proceeds to the Company of $25,000. Using proceeds from the sale of the depositary shares, the Company redeemed all of its outstanding Series A Preferred Shares for an aggregate purchase price of $22,857, which redemption was completed as of February 15, 2014. All outstanding depositary shares were redeemed or converted into common shares by December 20, 2019.

Earnings per Common Share

Earnings per Common Share	12 Months Ended
Earnings per Common Share	Dec. 31, 2020
Earnings Per Share [Abstract]
Earnings per Common Share	NOTE 22 - EARNINGS PER COMMON SHARE The factors used in the earnings per share computation follow. 2020 2019 2018 Basic Net income $ 32,192 $ 33,878 $ 14,139 Preferred stock dividends — 647 959 Net income available to common shareholders—basic $ 32,192 $ 33,231 $ 13,180 Weighted average common shares outstanding—basic 16,129,875 15,652,881 11,971,786 Basic earnings per share $ 2.00 $ 2.12 $ 1.10 Diluted Net income available to common shareholders—basic $ 32,192 $ 33,231 $ 13,180 Preferred stock dividends on convertible preferred stock — 647 959 Net income available to common shareholders—diluted $ 32,192 $ 33,878 $ 14,139 Weighted average common shares outstanding for earnings per common share basic 16,129,875 15,652,881 11,971,786 Add: dilutive effects of convertible preferred shares — 1,198,859 1,883,921 Average shares and dilutive potential common shares outstanding—diluted 16,129,875 16,851,740 13,855,707 Diluted earnings per share $ 2.00 $ 2.01 $ 1.02 Basic earnings per common share are calculated by dividing net income by the weighted-average number of common shares outstanding for the period. Diluted earnings per common share include the dilutive effect, if any, of additional potential common shares issuable under the equity incentive plan, computed using the treasury stock method, and the impact of the Company’s convertible preferred shares using the “if converted” method.

Quarterly Financial Data

Quarterly Financial Data	12 Months Ended
Quarterly Financial Data	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (Unaudited)	NOTE 23 - QUARTERLY FINANCIAL DATA (UNAUDITED) Interest Income Net Interest Income Net Income Basic Earnings per Common Share Diluted Earnings per Common Share 2020 First quarter (1)(2) $ 25,002 $ 22,115 $ 7,833 $ 0.47 $ 0.47 Second quarter (1)(2) 24,584 22,075 6,504 0.41 0.41 Third quarter (3)(4) 24,558 22,006 7,682 0.48 0.48 Fourth quarter (3)(4) 25,721 23,531 10,173 0.64 0.64 2019 First quarter (5)(6) $ 24,584 $ 21,719 $ 9,669 $ 0.61 $ 0.57 Second quarter (5)(9) 24,926 21,741 8,660 0.55 0.51 Third quarter (7)(9) 24,023 20,418 7,708 0.48 0.46 Fourth quarter (8) 24,521 21,222 7,841 0.48 0.47 ( 1 ) Interest income and net interest income increased due to increased volume of interest earning assets, offset by a decrease in interest rate. (2) Net income decreased due to an increase in the provision for loan losses. ( 3 ) Interest income and net interest income increased due to increased volume of interest earning assets, offset by decreases in interest earning asset and interest-bearing liabilities rate. ( 4 ) Net income decreased due to an increase in the provision for loan losses, offset by an increase in gain on sale of loans. ( 5 ) Interest income and net interest income increased due to increased volume and rate on loans, non-taxable securities and interest-bearing deposits in other banks. ( 6 ) Net income increased due to fees on tax refund processing program. ( 7 ) Interest income and net interest income decreased due to a decrease in rate on interest earning assets and an increase on rate on interest-bearing liabilities. ( 8 ) Interest income and net interest income increased due to an increase in loan volume and a decrease in rate on interest-bearing liabilities. ( 9 ) Net income decreased due to a decrease in fees on the tax refund program.

Derivatives

Derivatives	12 Months Ended
Derivatives	Dec. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives	NOTE 24 - DERIVATIVES To accommodate customer need and to support the Company’s asset/liability positioning, on occasion we enter into interest rate swaps with a customer and a bank counterparty. The interest rate swaps are free-standing derivatives and are recorded at fair value. The Company enters into a floating rate loan and a fixed rate swap with our customer. Simultaneously, the Company enters into an offsetting fixed rate swap with a bank counterparty. In connection with each swap transaction, the Company agrees to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on the same notional amount at a fixed interest rate. At the same time, the Company agrees to pay a bank counterparty the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. These transactions allow the Company’s customer to effectively convert variable rate loans to fixed rate loans. Since the Company acts as an intermediary for its customer, changes in the fair value of the underlying derivative contracts offset each other and do not significantly impact the Company’s results of operations unless a significant difference in credit risk emerges between the counterparties at either end of one of the swap contracts. None of the Company’s derivatives are designated as hedging instruments. NOTE 24 - DERIVATIVE HEDGING INSTRUMENTS (Continued) The following table summarizes the Company’s interest rate swap positions as of December 31, 2020. Classification on the Consolidated Balance Sheet Notional Amount Fair Value Weighted Average Rate Received/ (Paid) Derivative Assets Other Assets $ 244,748 $ 21,700 4.48 % Derivative Liabilities Accrued expenses and other liabilities ( 244,748 ) ( 21,764 ) -4.48 % Net Exposure $ — $ ( 64 ) The following table summarizes the Company’s interest rate swap positions as of December 31, 2019. Classification on the Consolidated Balance Sheet Notional Amount Fair Value Weighted Average Rate Received/ (Paid) Derivative Assets Other Assets $ 151,648 $ 8,918 5.04 % Derivative Liabilities Accrued expenses and other liabilities ( 151,648 ) ( 8,918 ) -5.04 % Net Exposure $ — $ — The Company monitors and controls all derivative products with a comprehensive Board of Director approved commercial loan swap policy. All hedge transactions must be approved in advance by the Lenders Loan Committee or the Directors Loan Committee of the Board of Directors. The Company classifies changes in the fair value of derivatives with “Other” in the Consolidated Statements of Operation. Any fees paid to enter the swap contract at inception are recognized in earnings when received. Such fees amounted to $1,459 and $516 during the years ended December 31, 2020 and 2019, respectively. At December 31, 2020, the Company had cash and securities at fair value pledged for collateral on its interest rate swaps with third party financial institutions of $11,300 and $11,705, respectively. At December 31, 2019, securities with a fair value of $14,032 were pledged as collateral.

Qualified Affordable Housing Pr

Qualified Affordable Housing Project Investments	12 Months Ended
Qualified Affordable Housing Project Investments	Dec. 31, 2020
Federal Home Loan Banks [Abstract]
Qualified Affordable Housing Project Investments	NOTE 25 – QUALIFIED AFFORDABLE HOUSING PROJECT INVESTMENTS The Company invests in qualified affordable housing projects. At December 31, 2020 and 2019, the balance of the Company’s investments in qualified affordable housing projects was $5,967 and $5,154, respectively. These balances are reflected in the other assets line on the Consolidated Balance Sheet. The unfunded commitments related to the investments in qualified affordable housing projects totaled $5,944 and $5,417 at December 31, 2020 and 2019, respectively. During the years ended December 31, 2020, 2019 and 2018, the Company recognized amortization expense with respect to its investments in qualified affordable housing projects of $661, $570 and $473, respectively, which was included within pre-tax income on the Consolidated Statements of Operations. Additionally, during the years ended December 31, 2020, 2019 and 2018, the Company recognized tax credits and other benefits from its investments in affordable housing tax credits of $1,186, $995 and $903, respectively. During the years ended December 31, 2020, 2019 and 2018, the Company did not incur impairment losses related to its investment in qualified affordable housing projects.

Revenue Recognition

Revenue Recognition	12 Months Ended
Revenue Recognition	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenue Recognition	NOTE 26 – REVENUE RECOGNITION The Company accounts for revenues from contracts with customers under ASC 606, Revenue from Contracts with Customers. Revenue associated with financial instruments, including revenue from loans and securities are outside the scope of the new standard and accounted for under existing GAAP. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives and certain credit card fees are also not in scope of the new guidance. Noninterest revenue streams in-scope of ASC 606 are discussed below. Service Charges Service charges consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, and other deposit account related fees. The Company’s performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Other deposit account related fees are largely transactional based, and therefore, the Company’s performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. ATM/Interchange Fees Fees, exchange, and other service charges are primarily comprised of debit and credit card income, ATM fees and other service charges. Debit and credit card income is primarily comprised of interchange fees earned whenever the Company’s debit and credit cards are processed through card payment networks such as Mastercard. ATM fees are primarily generated when a Company cardholder uses a non-Company ATM or a non-Company cardholder uses a Company ATM. The Company’s performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month. Wealth Management Fees Wealth management fees are primarily comprised of fees earned from the management and administration of trusts and other customer assets. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received in the following month through a direct charge to customers’ accounts. The Company does not earn performance-based incentives. The Company’s performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered. Tax Refund Processing Fees The Company facilitates the payment of federal and state income tax refunds in partnership with a third-party vendor. Refund Transfers (“RTs”) are fee-based products whereby a tax refund is issued to the taxpayer after the Company has received the refund from the federal or state government. As part of this agreement the Company earns fee income, the majority of which is received in the first quarter of the year. The Company’s fee income revenue is recognized based on the estimated percent of business completed by each date. NOTE 26 – REVENUE RECOGNITION (Continued) Other Other noninterest income consists of other recurring revenue streams such as check order fees, wire transfer fees, safety deposit box rental fees, item processing fees and other miscellaneous revenue streams. Check order income mainly represents fees charged to customers for checks. Wire transfer fees represent revenue from processing wire transfers. Safe deposit box rental fees are charged to the customer on an annual basis and recognized upon receipt of payment. The Company determined that since rentals and renewals occur fairly consistently over time, revenue is recognized on a basis consistent with the duration of the performance obligation. Item processing fee income represents fees charged to other financial institutions for processing their transactions. Payment is typically received in the following month. The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the years ended December 31, 2020, 2019 and 2018. For the years ended December 31, 2020 2019 2018 Noninterest Income In-scope of Topic 606: Service charges $ 5,288 $ 6,395 $ 5,208 ATM/Interchange fees 4,472 4,056 2,794 Wealth management fees 3,981 3,670 3,669 Tax refund processing fees 2,375 2,750 2,750 Other 831 911 892 Noninterest Income (in-scope of Topic 606) 16,947 17,782 15,313 Noninterest Income (out-of-scope of Topic 606) 11,235 4,661 2,818 Total Noninterest Income $ 28,182 $ 22,443 $ 18,131

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2020
Leases [Abstract]
Leases	NOTE 27 - LEASES We have operating leases for several branch locations and office space. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants. We also lease certain office equipment under operating leases. Many of our leases include both lease (e.g., minimum rent payments) and non-lease (e.g., common-area or other maintenance costs) components. The Company accounts for each component separately based on the standalone price of each component. In addition, we have several operating leases with lease terms of less than one year and therefore, we have elected the practical expedient to exclude these short-term leases from our ROU assets and lease liabilities. Most leases include one or more options to renew. The exercise of lease renewal options is typically at our sole discretion. The majority of renewals to extend the lease terms are included in our ROU assets and lease liabilities as they are reasonably certain of exercise. As most of our leases do not provide an implicit rate, we use the fully collateralized FHLB borrowing rate, commensurate with the lease terms based on the information available at the lease commencement date in determining the present value of the lease payments. The balance sheet information related to our operating leases were as follows as of December 31, 2020 and 2019: Classification on the Consolidated Balance Sheet December 31, 2020 December 31, 2019 Assets: Operating lease Other assets $ 2,678 $ 3,273 Liabilities: Operating lease Accrued expenses and other liabilities $ 2,678 $ 3,273 The cost components of our operating leases were as follows for the period ended December 31, 2020 and 2019: December 31, 2020 December 31, 2019 Lease cost Operating lease cost $ 499 $ 429 Short-term lease cost 304 262 Sublease income ( 26 ) ( 49 ) Total lease cost $ 777 $ 642 NOTE 27 – LEASES (Continued) Maturities of our lease liabilities for all operating leases for each of the next five years and thereafter is as follows: 2021 $ 432 2022 420 2023 414 2024 406 2025 308 Thereafter 985 Total lease payments $ 2,965 Less: Imputed Interest 287 Present value of lease liabilities $ 2,678 The weighted average remaining lease terms and discount rates for all of our operating leases were as follows as of December 31, 2020: Weighted-average remaining lease term - operating leases (years) 6.60 Weighted-average discount rate - operating leases 2.85 %

Subsequent Events

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	NOTE 28 - SUBSEQUENT EVENTS Paycheck Protection Program The Consolidated Appropriations Act 2021, was signed into law on December 27, 2020 and provides an additional funding of $284.5 billion under the Paycheck Protection Program (PPP) and the establishment of PPP Second Draw Loans under the Economic Aid to Hard-Hit Small Businesses, Nonprofit, and Venues Act (the “Relief Act”). This additional funding will be fully available from original PPP lenders on January 19, 2021. As required by the Relief Act, on January 7, 2021, the SBA issued additional guidance (the “SBA Guidance”) providing additional details on certain changes to the existing PPP structure and the new PPP Second Draw Loan, and the PPP Second Draw Loan applications were released on January 11, 2021. Funds provided under legislation are earmarked both for first time PPP borrowers (subject to original PPP eligibility and limits) as well as ‘Second Draw’ loans for borrows that already received an original PPP loan. Additional Second Draw eligibility requirements are: (1) entities must have no more than 300 employees, (2) suffered a 25% of more reduction in gross revenues between comparable quarters in 2019 and 2020, (3) some entities previously excluded are eligible for this round, such as local TV, newspaper, and radio, and (4) loan size limited to 2.5 times average monthly payroll with a maximum allowable amount of $2 million. As of February 22, 2021, we have received SBA approval on, and funded 857 loans totaling $99,357 under the Relief Act.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2020
Accounting Policies [Abstract]
Nature of Operations and Principles of Consolidation	Nature of Operations and Principles of Consolidation Civista provides financial services through its offices in the Ohio counties of Erie, Crawford, Champaign, Cuyahoga, Franklin, Logan, Summit, Huron, Ottawa, Madison, Montgomery and Richland, in the Indiana counties of Dearborn and Ripley and in the Kentucky county of Kenton. Its primary deposit products are checking, savings, and term certificate accounts, and its primary lending products are residential mortgage, commercial, and installment loans. Substantially all loans are secured by specific items of collateral including business assets, consumer assets and commercial and residential real estate. Commercial loans are expected to be repaid from cash flow from operations of businesses. There are no significant concentrations of loans to any one industry or customer. However, our customers’ ability to repay their loans is dependent on the real estate and general economic conditions in the area. Other financial instruments that potentially represent concentrations of credit risk include deposit accounts in other financial institutions. FCIA was formed to allow the Company to participate in commission revenue generated through its third party insurance agreement. Insurance commission revenue was less than 1.0% 1% 1%
Use of Estimates	Use of Estimates
Cash Flows	Cash Flows
Securities	Securities NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Interest income includes amortization of purchase premium or discount. Premiums and discounts on securities are amortized on the level-yield method without anticipating prepayments, except for mortgage backed securities where prepayments are anticipated. Gains and losses on sales are based on the amortized cost of the security sold using the specific identification method. Securities are evaluated on at least a quarterly basis and more frequently when economic or market conditions warrant such an evaluation to determine whether a decline in their value is other than temporary. For debt securities, management considers whether the present value of cash flows expected to be collected are less than the security’s amortized cost basis, the magnitude and duration of the decline, the reasons underlying the decline and the Company’s intent to sell the security or whether it is more likely than not that the Company would be required to sell the security before its anticipated recovery in market value, to determine whether the loss in value is other than temporary. Once a decline in value is determined to be other than temporary, if the Company does not intend to sell the security, and it is more likely than not that it will not be required to sell the security, before recovery of the security’s amortized cost basis, the charge to earnings is limited to the amount of credit loss. Any remaining difference between fair value and amortized cost is recognized in other comprehensive income, net of applicable taxes. Otherwise, the entire difference between far value and amortized cost is charged to earnings. Other securities which include FHLB stock, Federal Reserve Bank (“FRB”) stock, Federal Agricultural Mortgage Corporation stock, Bankers’ Bancshares Inc. (“BB”) stock, and Norwalk Community Development Corp (“NCDC”) stock are carried at cost.
Equity Securities	Equity securities
Loans Held for Sale	Loans Held for Sale:
Loans	Loans: Interest income on mortgage and commercial loans is discontinued at the time the loan is 90 days delinquent unless the credit is well-secured and in process of collection. Interest income on consumer loans is discontinued when management determines future collection is unlikely. In all cases, loans are placed on nonaccrual or charged-off at an earlier date if collection of principal or interest is considered doubtful. All interest accrued, but not received, for loans placed on nonaccrual, is reversed against interest income. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Purchased Loans	Purchased Loans: Purchased loans are accounted for individually or aggregated into pools of loans based on common risk characteristics (e.g., credit score, loan type, and date of origination). The Company estimates the amount and timing of expected cash flows for each purchased loan or pool, and the expected cash flows in excess of amount paid is recorded as interest income over the remaining life of the loan or pool (accretable yield). The excess of the loan’s, or pool’s, contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan or pool, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded. If the present value of expected future cash flows is greater than the carrying amount, the excess is recognized as part of future interest income.
Allowance for Loan Losses	Allowance for Loan Losses: All Commercial, Commercial Real Estate and Farm Real Estate loans are monitored on a regular basis with a detailed loan review completed for all loan relationships greater than $750. All Commercial, Commercial Real Estate and Farm Real Estate loans that are 90 days past due or in nonaccrual status, are analyzed to determine if they are “impaired”, which means that it is probable that all amounts will not be collected according to the contractual terms of the loan agreement. All loans that are delinquent 90 days are classified as substandard and placed on nonaccrual status unless they are well-secured and in the process of collection. The remaining loans are evaluated and segmented with loans with similar risk characteristics. The Company allocates reserves based on risk categories and portfolio segments described below, which conform to the Company’s asset classification policy. In reviewing risk within Civista’s loan portfolio, management has identified specific segments to categorize loan portfolio risk: (i) Commercial & Agriculture loans; (ii) Commercial Real Estate – Owner Occupied loans; (iii) Commercial Real Estate – Non-Owner Occupied loans; (iv) Residential Real Estate loans; (v) Real Estate Construction loans; (vi) Farm Real Estate loans; and (vii) Consumer and Other loans. Additional information related to economic factors can be found in Note 5.
Loan Charge-off Policies	Loan Charge-off Policies:
Troubled Debt Restructurings	Troubled Debt Restructurings:
Other Real Estate	Other Real Estate:
Premises and Equipment	Premises and Equipment: three seven seven fifty
Federal Home Loan Bank (FHLB) Stock	Federal Home Loan Bank (FHLB) Stock a b c d
Federal Reserve Bank (FRB) Stock	Federal Reserve Bank (FRB) Stock
Bank Owned Life Insurance (BOLI)	Bank Owned Life Insurance (BOLI)
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets: NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Other intangible assets consist of core deposit intangibles arising from whole bank and branch acquisitions. These intangible assets are measured at fair value and then amortized on an accelerated method over their estimated useful lives, which range from five twelve
Servicing Rights	Servicing Rights
Long-term Assets	Long-term Assets:
Repurchase Agreements	Repurchase Agreements
Loan Commitments and Related Financial Instruments	Loan Commitments and Related Financial Instruments:
Income Taxes	Income Taxes The Company prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Benefits from tax positions should be recognized in the financial statements only when it is more likely than not that the tax position will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant information. A tax position that meets the more-likely-than-not recognition threshold is measured at the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement. Tax positions that previously failed to meet the more-likely-than-not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is met. Previously recognized tax positions that no longer meet the more-likely-than-not recognition threshold should be derecognized in the first subsequent financial reporting period in which that threshold is no longer met. The Company recognizes interest and/or penalties related to income tax matters in income tax expense.
Stock-Based Compensation	Stock-Based Compensation NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) Compensation cost is recognized over the required service period, generally defined as the vesting period. For awards with graded vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award.
Retirement Plans	Retirement Plans
Earnings per Common Share	Earnings per Common Share
Comprehensive Income	Comprehensive Income
Loss Contingencies	Loss Contingencies
Restrictions on Cash	Restrictions on Cash
Dividend Restriction	Dividend Restriction
Fair Value of Financial Instruments	Fair Value of Financial Instruments
Operating Segments	Operating Segments
Treasury Stock	Treasury Stock
Business Combinations	Business Combinations:
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities Derivatives and Hedging
Reclassifications	Reclassifications:
Adoption of New Accounting Standards	Adoption of New Accounting Standards: In August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40). In October, 2018, the FASB issued ASU 2018-17, Consolidation (Topic 810) NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) In November, 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808)
Effect of Newly Issued but Not Yet Effective Accounting Standards	Effect of Newly Issued but Not Yet Effective Accounting Standards: In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments Financial Instruments – Credit Losses In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment Intangibles – Goodwill and Other evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) In April 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments – Credit Losses, and Topic 825, Financial Instruments, Topic 326, Financial Instruments – Credit Losses The Company is currently evaluating the potential impact of the Topic 326 amendments on the Company’s Consolidated Financial Statements. The amendments to Topic 825 are effective for interim and annual reporting periods beginning after December 15, 2019. Financial Instruments – Credit Losses This Update is not expected to have a material impact on the Company’s financial statements. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses, Topic 326 Financial Instruments – Credit Losses In November 2019, the FASB issued ASU 2019-10, Financial Instruments ‒ Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842) Intangibles ‒ Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (Goodwill) NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued) In November 2019, the FASB issued ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments – Credit Losses In March 2020, the FASB issued ASU 2020-03 , Codification Improvements to Financial Instruments. Financial Instruments In January 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, March 2020 In October 2020, the FASB issued ASU 2020-08, Codification Improvements to Subtopic 310-20, Receivables – Nonrefundable Fees and Other Costs,

Merger (Tables)

Merger (Tables)	12 Months Ended
Merger (Tables)	Dec. 31, 2020
Business Combinations [Abstract]
Schedule of Financial Information for Former Included in Consolidated Statement of Operations	The following table presents financial information for the former UCB included in the Consolidated Statements of Operations from the date of acquisition through December 31, 2018. Actual From Acquisition Date Through December 31, 2018 (in thousands) Net interest income after provision for loan losses $ 3,227 Noninterest income 373 Net income 1,707
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition for UCB. Core deposit intangibles will be amortized over a period of ten years using an accelerated method. Goodwill will not be amortized, but instead will be evaluated for impairment. Furthermore, the unaudited pro forma information does not reflect management’s estimate of any revenue-enhancing opportunities nor anticipated cost savings as a result of the integration and consolidation of the acquisition. Consideration paid $ 117,344 Net assets acquired: Cash and due from financial institutions $ 156,472 Securities available for sale 43,214 Equity securities 212 Loans held for sale 492 Loans, net 298,319 Other securities 3,527 Premises and equipment 5,291 Accrued interest receivable 950 Core deposit intangible 7,518 Bank owned life insurance 17,193 Other assets 10,361 Noninterest-bearing deposits ( 112,787 ) Interest-bearing deposits ( 363,157 ) Other liabilities ( 17 ) 67,588 Goodwill resulting from UCB merger $ 49,756

Securities (Tables)

Securities (Tables)	12 Months Ended
Securities (Tables)	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Available for Sale Securities	The amortized cost and fair value of available for sale securities and the related gross unrealized gains and losses recognized were as follows: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2020 U.S. Treasury securities and obligations of U.S. government agencies $ 21,479 $ 220 $ ( 6 ) $ 21,693 Obligations of states and political subdivisions 208,013 21,000 ( 1 ) 229,012 Mortgage-back securities in government sponsored entities 106,824 5,963 ( 28 ) 112,759 Total debt securities $ 336,316 $ 27,183 $ ( 35 ) $ 363,464 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2019 U.S. Treasury securities and obligations of U.S. government agencies $ 19,401 $ 204 $ ( 4 ) $ 19,601 Obligations of states and political subdivisions 193,646 12,409 ( 21 ) 206,034 Mortgage-back securities in government sponsored entities 129,145 3,863 ( 144 ) 132,864 Total debt securities $ 342,192 $ 16,476 $ ( 169 ) $ 358,499
Fair Value of Securities by Contractual Maturity	The amortized cost and fair value of securities at year end 2020 by contractual maturity were as follows. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately. Available for sale Amortized Cost Fair Value Due in one year or less $ 11,749 $ 11,898 Due from one to five years 13,675 14,118 Due from five to ten years 28,114 30,236 Due after ten years 175,954 194,453 Mortgage-backed securities in government sponsored entities 106,824 112,759 Total securities available for sale $ 336,316 $ 363,464
Proceeds from Sales of Securities, Gross Realized Gains and Losses	Proceeds from sales of securities, gross realized gains and gross realized losses were as follows: 2020 2019 2018 Sale proceeds $ 1,455 $ 17,570 $ 14,667 Gross realized gains 94 47 6 Gross realized losses — 43 393 Gains (losses) from securities called or settled by the issuer — 28 ( 26 )
Securities with Unrealized Losses Not Recognized in Income	Debt securities with unrealized losses at year end 2020 and 2019 not recognized in income were as follows: 2020 12 Months or less More than 12 months Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities and obligations of U.S. government agencies $ 6,501 $ ( 5 ) $ 126 $ ( 1 ) $ 6,627 $ ( 6 ) Obligations of states and political subdivisions 1,874 ( 1 ) — — 1,874 ( 1 ) Mortgage-backed securities in gov’t sponsored entities 5,755 ( 28 ) — — 5,755 ( 28 ) Total temporarily impaired $ 14,130 $ ( 34 ) $ 126 $ ( 1 ) $ 14,256 $ ( 35 ) 2019 12 Months or less More than 12 months Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities and obligations of U.S. government agencies $ — $ — $ 3,408 $ ( 4 ) $ 3,408 $ ( 4 ) Obligations of states and political subdivisions 1,947 ( 21 ) — — 1,947 ( 21 ) Mortgage-backed securities in gov’t sponsored entities 10,653 ( 91 ) 7,732 ( 53 ) 18,385 ( 144 ) Total temporarily impaired $ 12,600 $ ( 112 ) $ 11,140 $ ( 57 ) $ 23,740 $ ( 169 )
Schedule of Net Gains and Losses on Equity Investments Recognized in Earnings and Portion of Unrealized Gains and Losses for Period that Relates to Equity Investments	The following table presents the net gains and losses on equity investments recognized in earnings at year-end 2020 and 2019, and the portion of unrealized gains and losses for the period that relates to equity investments held at year-end 2020 and 2019: 2020 2019 Net gains (losses) recognized on equity securities during the year $ ( 57 ) $ 121 Less: Net gains realized on the sale of equity securities during the period 6 — Unrealized gains (losses) recognized in equity securities held at December 31 $ ( 51 ) $ 121

Loans (Tables)

Loans (Tables)	12 Months Ended
Loans (Tables)	Dec. 31, 2020
Receivables [Abstract]
Loan Balances	Loans at year-end were as follows: 2020 2019 Commercial and Agriculture $ 409,876 $ 203,110 Commercial Real Estate - owner occupied 278,413 245,606 Commercial Real Estate - non-owner occupied 705,072 592,222 Residential Real Estate 442,588 463,032 Real Estate Construction 175,609 155,825 Farm Real Estate 33,102 34,114 Consumer and Other 12,842 15,061 Total Loans 2,057,502 1,708,970 Allowance for loan losses ( 25,028 ) ( 14,767 ) Net loans $ 2,032,474 $ 1,694,203
Loans to Directors and Executive Officers Including Immediate Families	Loans to principal officers, directors, and their affiliates at year-end 2020 and 2019 were as follows: 2020 2019 Balance - Beginning of year $ 9,909 $ 8,722 New loans and advances 1,153 3,057 Repayments ( 3,004 ) ( 2,574 ) Effect of changes to related parties 417 704 Balance - End of year $ 8,475 $ 9,909

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	12 Months Ended
Allowance for Loan Losses (Tables)	Dec. 31, 2020
Changes in the Allowance for Loan Losses and Loan Balances Outstanding	The following tables present, by portfolio segment, the changes in the allowance for loan losses, the ending allocation of the allowance for loan losses and the loan balances outstanding for the years ended December 31, 2020, 2019 and 2018. The changes can be impacted by overall loan volume, adversely graded loans, historical charge-offs and economic factors Allowance for loan losses: December 31, 2020 Beginning balance Charge-offs Recoveries Provision (Credit) Ending Balance Commercial & Agriculture $ 2,219 $ ( 20 ) $ 7 $ 604 $ 2,810 Commercial Real Estate: Owner Occupied 2,541 ( 148 ) 259 1,405 4,057 Non-Owner Occupied 6,584 — 48 5,819 12,451 Residential Real Estate 1,582 ( 236 ) 218 920 2,484 Real Estate Construction 1,250 — 4 1,185 2,439 Farm Real Estate 344 — 13 ( 19 ) 338 Consumer and Other 247 ( 61 ) 65 ( 42 ) 209 Unallocated — — — 240 240 Total $ 14,767 $ ( 465 ) $ 614 $ 10,112 $ 25,028 Allowance for loan losses: December 31, 2019 Beginning balance Charge-offs Recoveries Provision (Credit) Ending Balance Commercial & Agriculture $ 1,747 $ ( 114 ) $ 86 $ 500 $ 2,219 Commercial Real Estate: Owner Occupied 1,962 ( 161 ) 289 451 2,541 Non-Owner Occupied 5,803 — 102 679 6,584 Residential Real Estate 1,531 ( 294 ) 259 86 1,582 Real Estate Construction 1,046 ( 24 ) 3 225 1,250 Farm Real Estate 397 — 5 ( 58 ) 344 Consumer and Other 284 ( 183 ) 85 61 247 Unallocated 909 — — ( 909 ) — Total $ 13,679 $ ( 776 ) $ 829 $ 1,035 $ 14,767 Allowance for loan losses: December 31, 2018 Beginning balance Charge-offs Recoveries Provision (Credit) Ending Balance Commercial & Agriculture $ 1,562 $ ( 249 ) $ 169 $ 265 $ 1,747 Commercial Real Estate: Owner Occupied 2,043 ( 193 ) 158 ( 46 ) 1,962 Non-Owner Occupied 5,307 ( 153 ) 28 621 5,803 Residential Real Estate 1,910 ( 105 ) 208 ( 482 ) 1,531 Real Estate Construction 834 — — 212 1,046 Farm Real Estate 430 — 5 ( 38 ) 397 Consumer and Other 290 ( 203 ) 100 97 284 Unallocated 758 — — 151 909 Total $ 13,134 $ ( 903 ) $ 668 $ 780 $ 13,679 The following tables present, by portfolio segment, the allocation of the allowance for loan losses and related loan balances as of December 31, 2020 and December 31, 2019. December 31, 2020 Loans acquired with credit deterioration Loans individually evaluated for impairment Loans collectively evaluated for impairment Total Allowance for loan losses: Commercial & Agriculture $ — $ 73 $ 2,737 $ 2,810 Commercial Real Estate: Owner Occupied — 5 4,052 4,057 Non-Owner Occupied — — 12,451 12,451 Residential Real Estate — 29 2,455 2,484 Real Estate Construction — — 2,439 2,439 Farm Real Estate — — 338 338 Consumer and Other — — 209 209 Unallocated — — 240 240 Total $ — $ 107 $ 24,921 $ 25,028 Outstanding loan balances: Commercial & Agriculture $ — $ 74 $ 409,802 $ 409,876 Commercial Real Estate: Owner Occupied — 980 277,433 278,413 Non-Owner Occupied — 48 705,024 705,072 Residential Real Estate 388 946 441,254 442,588 Real Estate Construction — — 175,609 175,609 Farm Real Estate — 618 32,484 33,102 Consumer and Other — — 12,842 12,842 Total $ 388 $ 2,666 $ 2,054,448 $ 2,057,502 December 31, 2019 Loans acquired with credit deterioration Loans individually evaluated for impairment Loans collectively evaluated for impairment Total Allowance for loan losses: Commercial & Agriculture $ — $ — $ 2,219 $ 2,219 Commercial Real Estate: Owner Occupied — 9 2,532 2,541 Non-Owner Occupied — — 6,584 6,584 Residential Real Estate — 82 1,500 1,582 Real Estate Construction — — 1,250 1,250 Farm Real Estate — — 344 344 Consumer and Other — — 247 247 Unallocated — — — — Total $ — $ 91 $ 14,676 $ 14,767 Outstanding loan balances: Commercial & Agriculture $ — $ 367 $ 202,743 $ 203,110 Commercial Real Estate: Owner Occupied — 426 245,180 245,606 Non-Owner Occupied — 374 591,848 592,222 Residential Real Estate 467 1,764 460,801 463,032 Real Estate Construction — — 155,825 155,825 Farm Real Estate — 666 33,448 34,114 Consumer and Other — — 15,061 15,061 Total $ 467 $ 3,597 $ 1,704,906 $ 1,708,970
Credit Exposures by Internally Assigned Grades	December 31, 2020 Pass Special Mention Substandard Doubtful Ending Balance Commercial & Agriculture $ 401,636 $ 4,472 $ 3,768 $ — $ 409,876 Commercial Real Estate: Owner Occupied 248,316 19,429 10,668 — 278,413 Non-Owner Occupied 604,909 58,270 41,893 — 705,072 Residential Real Estate 81,409 668 5,524 — 87,601 Real Estate Construction 158,207 962 492 — 159,661 Farm Real Estate 30,486 216 2,400 — 33,102 Consumer and Other 833 — 33 — 866 Total $ 1,525,796 $ 84,017 $ 64,778 $ — $ 1,674,591 December 31, 2019 Pass Special Mention Substandard Doubtful Ending Balance Commercial & Agriculture $ 199,649 $ 2,236 $ 1,225 $ — $ 203,110 Commercial Real Estate: Owner Occupied 237,171 5,617 2,818 — 245,606 Non-Owner Occupied 588,633 2,155 1,434 — 592,222 Residential Real Estate 73,289 528 6,495 — 80,312 Real Estate Construction 145,251 — 9 — 145,260 Farm Real Estate 30,808 567 2,739 — 34,114 Consumer and Other 1,289 — 6 — 1,295 Total $ 1,276,090 $ 11,103 $ 14,726 $ — $ 1,301,919
Performing and Nonperforming Loans	Certain TDRs are classified as nonperforming at the time of restructure and may only be returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period, generally six months. December 31, 2020 Residential Real Estate Real Estate Construction Consumer and Other Total Performing $ 354,987 $ 15,948 $ 11,976 $ 382,911 Nonperforming — — — — Total $ 354,987 $ 15,948 $ 11,976 $ 382,911 December 31, 2019 Residential Real Estate Real Estate Construction Consumer and Other Total Performing $ 382,720 $ 10,565 $ 13,766 $ 407,051 Nonperforming — — — — Total $ 382,720 $ 10,565 $ 13,766 $ 407,051
Aging Analysis of Past Due Loans	The following tables include an aging analysis of the recorded investment of past due loans outstanding as of December 31, 2020 and 2019. December 31, 2020 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Total Past Due Current Purchased Credit- Impaired Loans Total Loans Past Due 90 Days and Accruing Commercial & Agriculture $ 117 $ 25 $ 50 $ 192 $ 409,684 $ — $ 409,876 $ — Commercial Real Estate: Owner Occupied — 4 102 106 278,307 — 278,413 — Non-Owner Occupied — — 6 6 705,066 — 705,072 — Residential Real Estate 1,059 867 1,314 3,240 438,960 388 442,588 — Real Estate Construction — — — — 175,609 — 175,609 — Farm Real Estate — — 4 4 33,098 — 33,102 — Consumer and Other 59 1 16 76 12,766 — 12,842 — Total $ 1,235 $ 897 $ 1,492 $ 3,624 $ 2,053,490 $ 388 $ 2,057,502 $ — December 31, 2019 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Total Past Due Current Purchased Credit- Impaired Loans Total Loans Past Due 90 Days and Accruing Commercial & Agriculture $ 27 $ 35 $ 106 $ 168 $ 202,942 $ — $ 203,110 $ — Commercial Real Estate: Owner Occupied 453 63 663 1,179 244,427 — 245,606 — Non-Owner Occupied — — 8 8 592,214 — 592,222 — Residential Real Estate 2,399 198 1,775 4,372 458,193 467 463,032 — Real Estate Construction — — — — 155,825 — 155,825 — Farm Real Estate — — 7 7 34,107 — 34,114 — Consumer and Other 129 46 — 175 14,886 — 15,061 — Total $ 3,008 $ 342 $ 2,559 $ 5,909 $ 1,702,594 $ 467 $ 1,708,970 $ —
Summary of Nonaccrual Loans Excluding Purchased Credit-Impaired (PCI) Loans	The following table presents loans on nonaccrual status, excluding purchased credit-impaired (PCI) loans, as of December 31, 2020 and 2019. 2020 2019 Commercial & Agriculture $ 139 $ 173 Commercial Real Estate: Owner Occupied 964 938 Non-Owner Occupied 6 8 Residential Real Estate 3,893 4,183 Real Estate Construction 7 9 Farm Real Estate 85 284 Consumer and Other 31 4 Total $ 5,125 $ 5,599
Schedule of Loan Modifications	There were no loans modified during the twelve month period ended December 31, 2020. Loan modifications that are considered TDRs completed during the twelve month periods ended December 31, 2019 and 2018 were as follows: For the Twelve Month Period Ended December 31, 2019 Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Commercial & Agriculture — $ — $ — Commercial Real Estate: Owner Occupied — — — Non-Owner Occupied 1 382 382 Residential Real Estate — — — Real Estate Construction — — — Farm Real Estate — — — Consumer and Other — — — Total Loan Modifications 1 $ 382 $ 382 For the Twelve Month Period Ended December 31, 2018 Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Commercial & Agriculture — $ — $ — Commercial Real Estate: Owner Occupied — — — Non-Owner Occupied — — — Residential Real Estate 1 23 23 Real Estate Construction — — — Farm Real Estate 1 110 110 Consumer and Other — — — Total Loan Modifications 2 $ 133 $ 133
Impaired Financing Receivables Excluding PCI Loans	The following table includes the recorded investment and unpaid principal balances for impaired financing receivables, excluding PCI loans, with the associated allowance amount, if applicable, as of December 31, 2020 and 2019. December 31, 2020 December 31, 2019 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: Commercial & Agriculture $ — $ — $ 367 $ 367 Commercial Real Estate: Owner Occupied 757 757 168 168 Non-Owner Occupied 48 48 374 374 Residential Real Estate 915 940 1,571 1,643 Farm Real Estate 618 618 666 666 Total 2,338 2,363 3,146 3,218 With an allowance recorded: Commercial & Agriculture 74 74 $ 73 — — $ — Commercial Real Estate: Owner Occupied 223 223 5 258 258 9 Residential Real Estate 31 35 29 193 197 82 Farm Real Estate — — — — — — Total 328 332 107 451 455 91 Total: Commercial & Agriculture 74 74 73 367 367 — Commercial Real Estate: Owner Occupied 980 980 5 426 426 9 Non-Owner Occupied 48 48 — 374 374 — Residential Real Estate 946 975 29 1,764 1,840 82 Farm Real Estate 618 618 — 666 666 — Total $ 2,666 $ 2,695 $ 107 $ 3,597 $ 3,673 $ 91 The following tables include the average recorded investment and interest income recognized for impaired financing receivables as of, and for the years ended, December 31, 2020, 2019 and 2018. For the year ended: December 31, 2020 December 31, 2019 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Commercial & Agriculture $ 88 $ 4 $ 367 $ 33 Commercial Real Estate: Owner Occupied 520 27 456 32 Non-Owner Occupied 243 16 308 20 Residential Real Estate 1,361 43 1,271 58 Farm Real Estate 647 26 683 29 Total $ 2,859 $ 116 $ 3,085 $ 172 For the year ended: December 31, 2018 Average Recorded Investment Interest Income Recognized Commercial & Agriculture $ 636 $ 25 Commercial Real Estate: Owner Occupied 610 33 Non-Owner Occupied 39 5 Residential Real Estate 1,519 75 Farm Real Estate 716 29 Total $ 3,520 $ 167
Schedule of Changes in Amortized Yield for PCI Loans	Changes in the amortizable yield for PCI loans were as follows, since acquisition: At December 31, 2020 At December 31, 2019 (In Thousands) (In Thousands) Balance at beginning of period $ 255 $ 336 Acquisition of PCI loans — — Accretion ( 336 ) ( 164 ) Transfers from non-accretable to accretable 306 83 Balance at end of period $ 225 $ 255
Schedule of Loans Acquired and Accounted	The following table presents additional information regarding loans acquired and accounted for in accordance with ASC 310-30: At December 31, 2020 At December 31, 2019 Acquired Loans with Specific Evidence of Deterioration of Credit Quality (ASC 310-30) Acquired Loans with Specific Evidence of Deterioration of Credit Quality (ASC 310-30) (In Thousands) Outstanding balance $ 687 $ 1,149 Carrying amount 388 467
CARES Act [Member]
Schedule of Loan Modifications	Details with respect to loan modifications that remain on deferred status are as follows: Number of Percent of Type of Loan Loans Balance Loans Outstanding 1 (In thousands) Commercial & Agriculture 21 $ 4,069 0.22 % Commercial Real Estate: Owner Occupied 12 13,072 0.71 % Non-Owner Occupied 19 51,027 2.77 % Residential Real Estate 1 180 0.01 % Real Estate Construction 2 5,438 0.30 % Total 55 $ 73,786 4.01 % 1

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	12 Months Ended
Other Comprehensive Income (Loss) (Tables)	Dec. 31, 2020
Equity [Abstract]
Components of Other Comprehensive Income (Loss)	The following table presents the components of other comprehensive income (loss), net of tax, as of December 31, 2020, 2019 and 2018: Before Tax Tax Effect Net of Tax Year Ended December 31, 2020 Net unrealized Gains (Losses) on Investment Securities: Other comprehensive income (loss) before reclassifications $ 10,935 $ 2,297 $ 8,638 Amounts reclassified from accumulated other comprehensive income (loss) ( 94 ) ( 20 ) ( 74 ) Net Unrealized Gains on Investment Securities 10,841 2,277 8,564 Defined Benefit Plans: Other comprehensive income (loss) before reclassifications ( 1,326 ) ( 279 ) ( 1,047 ) Amounts reclassified from accumulated other comprehensive income (loss) 289 61 228 Defined Benefit Plans, Net ( 1,037 ) ( 218 ) ( 819 ) Other Comprehensive Income $ 9,804 $ 2,059 $ 7,745 Year Ended December 31, 2019 Net unrealized Gains (Losses) on Investment Securities: Other comprehensive income (loss) before reclassifications $ 13,368 $ 2,807 $ 10,561 Amounts reclassified from accumulated other comprehensive income (loss) ( 32 ) ( 7 ) ( 25 ) Net Unrealized Gains on Investment Securities 13,336 2,800 10,536 Defined Benefit Plans: Other comprehensive income (loss) before reclassifications ( 2,953 ) ( 620 ) ( 2,333 ) Amounts reclassified from accumulated other comprehensive income (loss) 156 33 123 Defined Benefit Plans, Net ( 2,797 ) ( 587 ) ( 2,210 ) Other Comprehensive Income $ 10,539 $ 2,213 $ 8,326 Year Ended December 31, 2018 Net unrealized Gains (Losses) on Investment Securities: Other comprehensive income (loss) before reclassifications $ ( 1,122 ) $ ( 236 ) $ ( 886 ) Amounts reclassified from accumulated other comprehensive income (loss) 413 87 326 Reclassification of equity securities from accumulated other comprehensive income (loss) ( 352 ) ( 74 ) ( 278 ) Net Unrealized Losses on Investment Securities ( 1,061 ) ( 223 ) ( 838 ) Defined Benefit Plans: Other comprehensive income (loss) before reclassifications 497 104 393 Amounts reclassified from accumulated other comprehensive income (loss) 149 32 117 Defined Benefit Plans, Net 646 136 510 Other Comprehensive Loss $ ( 415 ) $ ( 87 ) $ ( 328 ) NOTE 6 - OTHER COMPREHENSIVE INCOME (LOSS ) (Continued) The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax, as of December 31, 2020, 2019 and 2018. For the Year Ended December 31, 2020 For the Year Ended December 31, 2019 For the Year Ended December 31, 2018 Unrealized Gains and Losses on Available for Sale Securities Defined Benefit Pension Items Total Unrealized Gains and Losses on Available for Sale Securities Defined Benefit Pension Items Total Unrealized Gains and Losses on Available for Sale Securities Defined Benefit Pension Items Total Beginning balance $ 12,883 $ ( 6,009 ) $ 6,874 $ 2,347 $ ( 3,799 ) $ ( 1,452 ) $ 3,185 $ ( 4,309 ) $ ( 1,124 ) Other comprehensive income (loss) before reclassifications 8,638 ( 1,047 ) 7,591 10,561 ( 2,333 ) 8,228 ( 886 ) 393 ( 493 ) Amounts reclassified from accumulated other comprehensive income (loss) ( 74 ) 228 154 ( 25 ) 123 98 326 117 443 Net current-period other comprehensive income (loss) 8,564 ( 819 ) 7,745 10,536 ( 2,210 ) 8,326 ( 560 ) 510 ( 50 ) Reclassification of equity securities from accumulated other comprehensive income (loss) — — — — — — ( 278 ) — ( 278 ) Ending balance $ 21,447 $ ( 6,828 ) $ 14,619 $ 12,883 $ ( 6,009 ) $ 6,874 $ 2,347 $ ( 3,799 ) $ ( 1,452 )
Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Loss	NOTE 6 - OTHER COMPREHENSIVE INCOME (LOSS ) (Continued) The following table presents the amounts reclassified out of each component of accumulated other comprehensive loss as of December 31, 2020, 2019 and 2018. Amount Reclassified from Accumulated Other Comprehensive Loss (a) For the year ended December 31, Details about Accumulated Other Comprehensive Income (Loss) Components 2020 2019 2018 Affected Line Item in the Statement Where Net Income is Presented Unrealized gains (losses) on available-for-sale securities $ 94 $ 32 $ ( 413 ) Net gain (loss) on sale of securities Tax effect ( 20 ) ( 7 ) 87 Income taxes 74 25 ( 326 ) Amortization of defined benefit pension items Actuarial losses ( 289 ) (b) ( 156 ) (b) ( 149 ) (b) Other operating expenses Tax effect 61 33 32 Income taxes ( 228 ) ( 123 ) ( 117 ) Total reclassifications for the period $ ( 154 ) $ ( 98 ) $ ( 443 ) (a) Amounts in parentheses indicate expenses and other amounts indicate income. (b) These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost.

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
Premises and Equipment (Tables)	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Year-End Premises and Equipment	Year-end premises and equipment were as follows: At December 31, 2020 2019 Land and improvements $ 6,879 $ 6,651 Buildings and improvements 28,835 28,047 Furniture and equipment 22,849 21,988 Total 58,563 56,686 Accumulated depreciation ( 35,983 ) ( 33,815 ) Premises and equipment, net $ 22,580 $ 22,871

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
Goodwill and Intangible Assets (Tables)	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Acquired Intangible Assets	Acquired intangible assets were as follows as of year-end. 2020 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Core deposit intangible assets(1): Core deposit intangibles 14,792 8,963 5,829 14,792 8,049 6,743 Total core deposit intangible assets $ 14,792 $ 8,963 $ 5,829 $ 14,792 $ 8,049 $ 6,743 (1) Excludes fully amortized core deposit intangible assets
Schedule of Mortgage Servicing Rights (MSRs) and Related Valuation Allowance	Activity for mortgage servicing rights (MSRs) and the related valuation allowance follows: 2020 2019 Mortgage Servicing Rights: Beginning of year $ 1,562 $ 1,664 Additions 1,310 247 Disposals — — Amortized to expense 524 247 Other Charges — — Change in valuation allowance 102 102 End of year $ 2,246 $ 1,562 Valuation allowance: Beginning of year $ 102 $ — Additions expensed 162 102 Reductions credited to operations ( 60 ) — Direct write-offs — — End of year $ 204 $ 102
Schedule of Estimated Amortization Expense	Estimated amortization expense for each of the next five years and thereafter is as follows: MSRs Core deposit intangibles Total 2021 $ 126 $ 891 $ 1,017 2022 126 868 994 2023 125 841 966 2024 124 804 928 2025 124 708 832 Thereafter 1,621 1,717 3,338 $ 2,246 $ 5,829 $ 8,075

Interest-Bearing Deposits (Tabl

Interest-Bearing Deposits (Tables)	12 Months Ended
Interest-Bearing Deposits (Tables)	Dec. 31, 2020
Deposits [Abstract]
Summary of Interest-Bearing Deposits	Interest-bearing deposits as of December 31, 2020 and 2019 were as follows: 2020 2019 Demand $ 410,139 $ 301,674 Savings and Money markets 771,612 588,697 Certificates of Deposit: $250 and over 70,989 58,290 Other 169,453 168,928 Individual Retirement Accounts 46,396 48,622 Total $ 1,468,589 $ 1,166,211
Scheduled Maturities of Certificates of Deposit	Scheduled maturities of certificates of deposit, including IRAs at December 31, 2020 were as follows: 2021 $ 209,556 2022 58,234 2023 11,603 2024 3,490 2025 2,729 Thereafter 1,226 Total $ 286,838

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	12 Months Ended
Short-Term Borrowings (Tables)	Dec. 31, 2020
Debt Disclosure [Abstract]
Summary of Federal Funds Purchased and Other Short-term Borrowings	Short-term borrowings, which consist of federal funds purchased and other short-term borrowings are summarized as follows: At December 31, 2020 At December 31, 2019 Federal Funds Purchased Short-term Borrowings Federal Funds Purchased Short-term Borrowings Outstanding balance at year end $ — $ — $ — $ 101,500 Maximum indebtedness during the year 50,000 102,700 20,000 192,700 Average balance during the year 288 8,151 137 112,088 Average rate paid during the year 0.35 % 1.64 % 2.19 % 2.32 % Interest rate on year end balance — — — 1.63 % At December 31, 2018 Federal Funds Purchased Short-term Borrowings Outstanding balance at year end $ — $ 188,600 Maximum indebtedness during the year 20,000 225,300 Average balance during the year 116 113,520 Average rate paid during the year 2.58 % 2.07 % Interest rate on year end balance — 2.45 %

Federal Home Loan Bank Advanc_2

Federal Home Loan Bank Advances (Tables)	12 Months Ended
Federal Home Loan Bank Advances (Tables)	Dec. 31, 2020
Advances From Federal Home Loan Banks [Abstract]
Scheduled Principal Reductions of Federal Home Loan Bank Advances Outstanding	Scheduled principal reductions of FHLB advances outstanding at December 31, 2020 were as follows: 2029 $ 125,000 Total $ 125,000

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	12 Months Ended
Securities Sold Under Agreements to Repurchase (Tables)	Dec. 31, 2020
Brokers And Dealers [Abstract]
Summary of Securities Pledged as Collateral Under Repurchase Agreements	The following table presents detail regarding the securities pledged as collateral under repurchase agreements as of December 31, 2020 and 2019. All of the repurchase agreements are overnight agreements. December 31, 2020 December 31, 2019 Securities pledged for repurchase agreements: U.S. Treasury securities $ 899 $ 810 Obligations of U.S. government agencies 28,015 17,864 Total securities pledged $ 28,914 $ 18,674 Gross amount of recognized liabilities for repurchase agreements $ 28,914 $ 18,674 Amounts related to agreements not included in offsetting disclosures above $ — $ —
Schedule of Securities Sold Under Agreements to Repurchase	Information concerning securities sold under agreements to repurchase was as follows: 2020 2019 2018 Outstanding balance at year end $ 28,914 $ 18,674 $ 22,199 Average balance during the year 24,390 18,321 18,456 Average interest rate during the year 0.10 % 0.10 % 0.10 % Maximum month-end balance during the year $ 31,885 $ 21,970 $ 22,199 Weighted average interest rate at year end 0.10 % 0.10 % 0.10 %

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Schedule of Income Tax	Income taxes were as follows for the years ended December 31: 2020 2019 2018 Current $ 6,947 $ 4,713 $ 2,444 State 270 307 45 Deferred ( 2,277 ) 663 151 Income taxes $ 4,940 $ 5,683 $ 2,640
Effective Tax Rates Differed from Statutory Federal Income Tax Rate	Effective tax rates differed from the statutory federal income tax rate of 21% in 2020, 2019 and 2018 due to the following: 2020 2019 2018 Income taxes computed at the statutory federal tax rate $ 7,798 $ 8,308 $ 3,524 Add (subtract) tax effect of: Nontaxable interest income, net of nondeductible interest expense ( 1,293 ) ( 1,194 ) ( 834 ) Low income housing tax credit ( 1,186 ) ( 903 ) ( 903 ) Cash surrender value of BOLI ( 205 ) ( 211 ) ( 143 ) Nondeductible merger costs — — 1,034 Change in tax position BOLI — ( 353 ) — Other ( 174 ) 36 ( 38 ) Income tax expense $ 4,940 $ 5,683 $ 2,640
Summary of Deferred Tax Assets and Liabilities	Year-end deferred tax assets and liabilities were due to the following: 2020 2019 Deferred tax assets Allowance for loan losses $ 5,256 $ 3,245 Deferred compensation 1,201 1,191 Pension costs 304 81 Intangible assets 312 394 Purchase accounting adjustments — 226 Net operating loss carryforward 509 1,081 Deferred loan fees 1,260 102 Other 745 118 Deferred tax asset 9,587 6,438 Deferred tax liabilities Tax depreciation in excess of book depreciation ( 851 ) ( 808 ) Discount accretion on securities ( 10 ) ( 18 ) FHLB stock dividends ( 969 ) ( 969 ) Unrealized gain on securities available for sale ( 5,606 ) ( 3,424 ) Pension costs — — Prepaids ( 325 ) ( 326 ) BOLI — — Other ( 979 ) ( 359 ) Deferred tax liability ( 8,740 ) ( 5,904 ) Net deferred tax asset $ 847 $ 534

Retirement Plans (Tables)

Retirement Plans (Tables)	12 Months Ended
Retirement Plans (Tables)	Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]
Information about Pension Plan	Information about the pension plan is as follows: 2020 2019 Change in benefit obligation: Beginning benefit obligation $ 15,570 $ 13,338 Service cost — — Interest cost 484 479 Curtailment gain — — Settlement loss — — Actuarial (gain)/loss 1,898 3,546 Benefits paid ( 1,296 ) ( 1,793 ) Settlement payments — — Ending benefit obligation 16,656 15,570 Change in plan assets, at fair value: Beginning plan assets 15,183 15,572 Actual return 1,370 1,404 Employer contribution — — Benefits paid ( 1,296 ) ( 1,793 ) Settlement payments — — Administrative expenses — — Ending plan assets 15,257 15,183 Funded status at end of year $ ( 1,399 ) $ ( 387 )
Components of Net Periodic Pension Expense	The components of net periodic pension expense were as follows: 2020 2019 2018 Service cost $ — $ — $ — Interest cost 484 479 627 Expected return on plan assets ( 748 ) ( 811 ) ( 1,355 ) Net amortization and deferral 289 156 149 Net periodic pension cost (benefit) 25 ( 176 ) ( 579 ) Additional loss due to settlement — — 1,188 Total pension cost (benefit) $ 25 $ ( 176 ) $ 609 Net loss (gain) recognized in other comprehensive income $ 986 $ 2,798 $ ( 1,453 ) Total recognized in net periodic benefit cost and other comprehensive loss (before tax) $ 1,011 $ 2,622 $ ( 2,032 )
Weighted Average Assumptions Used to Determine Benefit Obligations and Net Periodic Pension Cost	The weighted average assumptions used to determine benefit obligations at year-end were as follows: 2020 2019 2018 Discount rate on benefit obligation 2.39 % 3.13 % 4.14 % Long-term rate of return on plan assets 4.44 % 4.96 % 7.00 % Rate of compensation increase 0.00 % 0.00 % 0.00 % The weighted average assumptions used to determine net periodic pension cost were as follows: 2020 2019 2018 Discount rate on benefit obligation 3.13 % 4.14 % 3.51 % Long-term rate of return on plan assets 4.96 % 7.00 % 7.00 % Rate of compensation increase 0.00 % 0.00 % 0.00 %
Schedule of Pension Plan Asset Allocation and Target Allocation by Asset Category	The Company’s pension plan asset allocation at year-end 2020 and 2019 and target allocation for 2020 by asset category are as follows: Target Allocation Percentage of Plan Assets at Year-end Asset Category 2021 2020 2019 Equity securities 0-30% 20.0 % 20.0 % Debt securities 70-100 80.0 80.0 Total 100.0 % 100.0 %
Summary of Investments Measured at Fair Value Based on NAV Per Share	The following table summarizes investments measured at fair value based on NAV per share as of December 31, 2020 and 2019, respectively: December 31, 2020 Fair Value Unfunded Commitments Redemption Frequency (if currently eligible) Redemption Notice Period Common/collective trust funds $ 15,257 N/A Daily Daily December 31, 2019 Fair Value Unfunded Commitments Redemption Frequency (if currently eligible) Redemption Notice Period Common/collective trust funds $ 15,183 N/A Daily Daily
Summary of Expected Benefit Payments	Expected benefit payments, which reflect expected future service, are as follows: 2021 $ 1,661 2022 275 2023 316 2024 355 2025 419 2026 through 2030 2,970 Total $ 5,996

Equity Incentive Plan (Tables)

Equity Incentive Plan (Tables)	12 Months Ended
Equity Incentive Plan (Tables)	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Company's Restricted Stock	The following is a summary of the status of the Company’s restricted shares, and changes therein during the twelve months ended December 31, 2020: December 31, 2020 Number of Restricted Shares Weighted Average Grant Date Fair Value Nonvested at beginning of period 44,027 $ 20.48 Granted 26,979 21.26 Vested ( 16,732 ) 20.36 Forfeited — — Nonvested at end of period 54,274 20.90 The following is a summary of the status of the Company’s awarded restricted shares as of December 31, 2020: At December 31, 2020 Date of Award Shares Remaining Expense Remaining Vesting Period (Years) January 15, 2016 2,056 $ — 0.00 March 20, 2017 2,388 24 1.00 April 10, 2018 2,643 — 0.00 April 10, 2018 4,670 62 2.00 March 14, 2019 6,796 63 1.00 March 14, 2019 8,742 119 3.00 March 14, 2020 13,997 186 2.00 March 14, 2020 12,982 197 4.00 54,274 $ 651 2.30

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	12 Months Ended
Fair Value Measurement (Tables)	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value	Assets and liabilities measured at fair value are summarized below. Fair Value Measurements at December 31, 2020 Using: (Level 1) (Level 2) (Level 3) Assets measured at fair value on a recurring basis: Securities available for sale U.S. Treasury securities and obligations of U.S. Government agencies $ — $ 21,693 $ — Obligations of states and political subdivisions — 229,012 — Mortgage-backed securities in government sponsored entities — 112,759 — Total securities available for sale — 363,464 — Equity securities — 886 — Swap asset — 21,700 — Liabilities measured at fair value on a recurring basis: Swap liability — 21,764 — Assets measured at fair value on a nonrecurring basis: Impaired Loans $ — $ — $ 1 Other Real Estate Owned — — 31 NOTE 17 - FAIR VALUE MEASUREMENT (Continued) Fair Value Measurements at December 31, 2019 Using: (Level 1) (Level 2) (Level 3) Assets measured at fair value on a recurring basis: Securities available for sale U.S. Treasury securities and obligations of U.S. Government agencies $ — $ 19,601 $ — Obligations of states and political subdivisions — 206,034 — Mortgage-backed securities in government sponsored entities — 132,864 — Total securities available for sale — 358,499 — Equity securities — 1,191 — Swap asset — 8,918 — Liabilities measured at fair value on a recurring basis: Swap liability — 8,918 — Assets measured at fair value on a nonrecurring basis: Impaired Loans $ — $ — $ 1
Quantitative Information about Level 3 Fair Value Measurements	The following tables presents quantitative information about the Level 3 significant unobservable inputs for assets and liabilities measured at fair value on a nonrecurring basis at December 31, 2020 and 2019. Quantitative Information about Level 3 Fair Value Measurements December 31, 2020 Fair Value Valuation Technique Unobservable Input Range Weighted Average Impaired loans $ 1 Appraisal of collateral Appraisal adjustments 0% - 30% 19% Holding period 23 months 23 months Other real estate owned $ 31 Appraisal of collateral Appraisal adjustments 10% 10% Quantitative Information about Level 3 Fair Value Measurements December 31, 2019 Fair Value Valuation Technique Unobservable Input Range Weighted Average Impaired loans $ 1 Appraisal of collateral Appraisal adjustments 30% 30% Holding period 22 months 22 months
Carrying Amount and Fair Value of Financial Instruments Carried at Amortized Cost	NOTE 17 - FAIR VALUE MEASUREMENT (Continued) The carrying amount and fair value of financial instruments carried at amortized cost were as follows: December 31, 2020 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from financial institutions $ 139,522 $ 139,522 $ 139,522 $ — $ — Other securities 20,537 20,537 20,537 — — Loans, held for sale 7,001 7,141 7,141 — — Loans, net of allowance for loan losses 2,032,474 2,063,249 — — 2,063,249 Bank owned life insurance 45,976 45,976 45,976 — — Accrued interest receivable 9,421 9,421 9,421 — — Financial Liabilities: Nonmaturing deposits 1,902,560 1,902,560 1,902,560 — — Time deposits 286,838 288,298 — — 288,298 Long-term FHLB advances 125,000 130,942 — — 130,942 Securities sold under agreement to repurchase 28,914 28,914 28,914 — — Subordinated debentures 29,427 31,479 — — 31,479 Accrued interest payable 204 204 204 — — December 31, 2019 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from financial institutions $ 48,535 $ 48,535 $ 48,535 $ — $ — Other securities 20,280 20,280 20,280 — — Loans, held for sale 2,285 2,331 2,331 — — Loans, net of allowance for loan losses 1,694,203 1,713,863 — — 1,713,863 Bank owned life insurance 44,999 44,999 44,999 — — Accrued interest receivable 7,093 7,093 7,093 — — Financial Liabilities: Nonmaturing deposits 1,402,924 1,402,924 1,402,924 — — Time deposits 275,840 276,616 — — 276,616 Short-term FHLB advances 101,500 101,500 101,500 — — Long-term FHLB advances 125,000 123,893 — — 123,893 Securities sold under agreement to repurchase 18,674 18,674 18,674 — — Subordinated debentures 29,427 34,452 — — 34,452 Accrued interest payable 277 277 277 — —

Commitments, Contingencies an_2

Commitments, Contingencies and Off-Balance-Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Contractual Amounts of Financial Instruments with Off-Balance-Sheet Risk	The contractual amount of financial instruments with off-balance-sheet risk was as follows at year-end. 2020 2019 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to extend credit: Lines of credit and construction loans $ 38,474 $ 427,864 $ 15,155 $ 396,516 Overdraft protection 6 41,707 5 37,286 Letters of credit 615 986 624 776 $ 39,095 $ 470,557 $ 15,784 $ 434,578

Capital Requirements and Rest_2

Capital Requirements and Restriction on Retained Earnings (Tables)	12 Months Ended
	Dec. 31, 2020
Capital Requirements And Restriction On Retained Earnings [Abstract]
Actual Capital Levels and Minimum Required Capital Levels	The Company’s and Civista’s actual capital levels and minimum required capital levels at December 31, 2020 and 2019 were as follows: To Be Well Capitalized Under For Capital Prompt Corrective Actual Adequacy Purposes Action Purposes Amount Ratio Amount Ratio Amount Ratio 2020 Total Risk Based Capital Consolidated $ 307,504 16.0 % $ 153,810 8.0 % n/a n/a Civista 277,429 14.4 153,765 8.0 $ 192,206 10.0 % Tier I Risk Based Capital Consolidated 283,459 14.7 115,358 6.0 n/a n/a Civista 252,304 13.1 115,323 6.0 153,765 8.0 CET1 Risk Based Capital Consolidated 254,032 13.2 86,518 4.5 n/a n/a Civista 241,891 12.6 86,493 4.5 124,934 6.5 Leverage Consolidated 283,459 10.8 105,279 4.0 n/a n/a Civista 252,304 9.6 105,029 4.0 131,286 5.0 2019 Total Risk Based Capital Consolidated $ 285,268 16.1 % $ 141,506 8.0 % n/a n/a Civista 250,920 14.2 141,445 8.0 $ 176,807 10.0 % Tier I Risk Based Capital Consolidated 270,501 15.3 106,129 6.0 n/a n/a Civista 235,094 13.3 106,084 6.0 141,445 8.0 CET1 Risk Based Capital Consolidated 241,074 13.6 79,597 4.5 n/a n/a Civista 224,653 12.7 79,563 4.5 114,924 6.5 Leverage Consolidated 270,501 12.3 87,652 4.0 n/a n/a Civista 235,094 10.8 87,362 4.0 109,203 5.0

Parent Company Only Condensed_2

Parent Company Only Condensed Financial Information (Tables)	12 Months Ended
	Dec. 31, 2020
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Balance Sheets	December 31, Condensed Balance Sheets 2020 2019 Assets: Cash $ 19,446 $ 24,089 Equity securities 886 1,191 Investment in bank subsidiary 344,948 319,714 Investment in nonbank subsidiaries 16,017 15,181 Other assets 1,575 1,683 Total assets $ 382,872 $ 361,858 Liabilities: Deferred income taxes and other liabilities $ 3,337 $ 2,305 Subordinated debentures 29,427 29,427 Total liabilities 32,764 31,732 Shareholders’ Equity: Common stock 277,039 276,422 Accumulated earnings 93,048 67,974 Treasury Stock ( 34,598 ) ( 21,144 ) Accumulated other comprehensive income 14,619 6,874 Total shareholders’ equity 350,108 330,126 Total liabilities and shareholders’ equity $ 382,872 $ 361,858
Schedule of Condensed Statements of Operations	For the years ended December 31, Condensed Statements of Operations 2020 2019 2018 Dividends from bank subsidiaries $ 15,300 $ 13,300 $ 10,000 Dividends from non-bank subsidiaries 440 — — Interest expense ( 945 ) ( 1,423 ) ( 1,320 ) Pension expense ( 25 ) 176 199 Acquisition expense — — ( 10,738 ) Other expense, net ( 1,241 ) ( 1,107 ) ( 1,740 ) Income (loss) before equity in undistributed net earnings of subsidiaries 13,529 10,946 ( 3,599 ) Income tax benefit 475 494 1,751 Equity in undistributed net earnings of subsidiaries 18,188 22,438 15,987 Net income $ 32,192 $ 33,878 $ 14,139 Comprehensive income $ 39,937 $ 42,204 $ 14,089
Schedule of Condensed Statements of Cash Flows	For the years ended December 31, Condensed Statements of Cash Flows 2020 2019 2018 Operating activities: Net income $ 32,192 $ 33,878 $ 14,139 Adjustment to reconcile net income to net cash from operating activities: Change in other assets and other liabilities 1,925 4,437 794 Gain on sale of fixed assets — — ( 110 ) Equity in undistributed net earnings of subsidiaries ( 18,188 ) ( 22,438 ) ( 15,987 ) Net cash from (used for) operating activities 15,929 15,877 ( 1,164 ) Investing activities: Proceeds from sale of premises and equipment — — 899 Disposal of investment in subsidiary — 41 — Acquisition and additional capitalization of subsidiary, net of cash acquired — — ( 5,216 ) Net cash from (used for) investing activities — 41 ( 4,317 ) Financing activities: Cash paid on fractional shares on preferred stock conversion to common stock — ( 2 ) — Purchase of treasury stock ( 13,454 ) ( 3,909 ) — Payment to repurchase series B preferred stock — ( 402 ) — Cash dividends paid ( 7,118 ) ( 7,194 ) ( 4,749 ) Net cash used for financing activities ( 20,572 ) ( 11,507 ) ( 4,749 ) Net change in cash and cash equivalents ( 4,643 ) 4,411 ( 10,230 ) Cash and cash equivalents at beginning of year 24,089 19,678 29,908 Cash and cash equivalents at end of year $ 19,446 $ 24,089 $ 19,678

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	12 Months Ended
Earnings per Common Share (Tables)	Dec. 31, 2020
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings per Common Share	The factors used in the earnings per share computation follow. 2020 2019 2018 Basic Net income $ 32,192 $ 33,878 $ 14,139 Preferred stock dividends — 647 959 Net income available to common shareholders—basic $ 32,192 $ 33,231 $ 13,180 Weighted average common shares outstanding—basic 16,129,875 15,652,881 11,971,786 Basic earnings per share $ 2.00 $ 2.12 $ 1.10 Diluted Net income available to common shareholders—basic $ 32,192 $ 33,231 $ 13,180 Preferred stock dividends on convertible preferred stock — 647 959 Net income available to common shareholders—diluted $ 32,192 $ 33,878 $ 14,139 Weighted average common shares outstanding for earnings per common share basic 16,129,875 15,652,881 11,971,786 Add: dilutive effects of convertible preferred shares — 1,198,859 1,883,921 Average shares and dilutive potential common shares outstanding—diluted 16,129,875 16,851,740 13,855,707 Diluted earnings per share $ 2.00 $ 2.01 $ 1.02

Quarterly Financial Data (Table

Quarterly Financial Data (Tables)	12 Months Ended
Quarterly Financial Data (Tables)	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Data	Interest Income Net Interest Income Net Income Basic Earnings per Common Share Diluted Earnings per Common Share 2020 First quarter (1)(2) $ 25,002 $ 22,115 $ 7,833 $ 0.47 $ 0.47 Second quarter (1)(2) 24,584 22,075 6,504 0.41 0.41 Third quarter (3)(4) 24,558 22,006 7,682 0.48 0.48 Fourth quarter (3)(4) 25,721 23,531 10,173 0.64 0.64 2019 First quarter (5)(6) $ 24,584 $ 21,719 $ 9,669 $ 0.61 $ 0.57 Second quarter (5)(9) 24,926 21,741 8,660 0.55 0.51 Third quarter (7)(9) 24,023 20,418 7,708 0.48 0.46 Fourth quarter (8) 24,521 21,222 7,841 0.48 0.47 ( 1 ) Interest income and net interest income increased due to increased volume of interest earning assets, offset by a decrease in interest rate. (2) Net income decreased due to an increase in the provision for loan losses. ( 3 ) Interest income and net interest income increased due to increased volume of interest earning assets, offset by decreases in interest earning asset and interest-bearing liabilities rate. ( 4 ) Net income decreased due to an increase in the provision for loan losses, offset by an increase in gain on sale of loans. ( 5 ) Interest income and net interest income increased due to increased volume and rate on loans, non-taxable securities and interest-bearing deposits in other banks. ( 6 ) Net income increased due to fees on tax refund processing program. ( 7 ) Interest income and net interest income decreased due to a decrease in rate on interest earning assets and an increase on rate on interest-bearing liabilities. ( 8 ) Interest income and net interest income increased due to an increase in loan volume and a decrease in rate on interest-bearing liabilities. ( 9 ) Net income decreased due to a decrease in fees on the tax refund program.

Derivatives (Tables)

Derivatives (Tables)	12 Months Ended
Derivatives (Tables)	Dec. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Interest Rate Swap Transactions	The following table summarizes the Company’s interest rate swap positions as of December 31, 2020. Classification on the Consolidated Balance Sheet Notional Amount Fair Value Weighted Average Rate Received/ (Paid) Derivative Assets Other Assets $ 244,748 $ 21,700 4.48 % Derivative Liabilities Accrued expenses and other liabilities ( 244,748 ) ( 21,764 ) -4.48 % Net Exposure $ — $ ( 64 ) The following table summarizes the Company’s interest rate swap positions as of December 31, 2019. Classification on the Consolidated Balance Sheet Notional Amount Fair Value Weighted Average Rate Received/ (Paid) Derivative Assets Other Assets $ 151,648 $ 8,918 5.04 % Derivative Liabilities Accrued expenses and other liabilities ( 151,648 ) ( 8,918 ) -5.04 % Net Exposure $ — $ —

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
Revenue Recognition (Tables)	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Summary of Noninterest Income Segregated By Revenue Streams In-scope and Out-of-scope of Topic 606	The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the years ended December 31, 2020, 2019 and 2018. For the years ended December 31, 2020 2019 2018 Noninterest Income In-scope of Topic 606: Service charges $ 5,288 $ 6,395 $ 5,208 ATM/Interchange fees 4,472 4,056 2,794 Wealth management fees 3,981 3,670 3,669 Tax refund processing fees 2,375 2,750 2,750 Other 831 911 892 Noninterest Income (in-scope of Topic 606) 16,947 17,782 15,313 Noninterest Income (out-of-scope of Topic 606) 11,235 4,661 2,818 Total Noninterest Income $ 28,182 $ 22,443 $ 18,131

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2020
Leases [Abstract]
Summary of Balance Sheet Information Related To Operating Leases	The balance sheet information related to our operating leases were as follows as of December 31, 2020 and 2019: Classification on the Consolidated Balance Sheet December 31, 2020 December 31, 2019 Assets: Operating lease Other assets $ 2,678 $ 3,273 Liabilities: Operating lease Accrued expenses and other liabilities $ 2,678 $ 3,273
Summary of Cost Components of Operating Leases	The cost components of our operating leases were as follows for the period ended December 31, 2020 and 2019: December 31, 2020 December 31, 2019 Lease cost Operating lease cost $ 499 $ 429 Short-term lease cost 304 262 Sublease income ( 26 ) ( 49 ) Total lease cost $ 777 $ 642
Summary of Maturity of Operating Lease Liabilities	Maturities of our lease liabilities for all operating leases for each of the next five years and thereafter is as follows: 2021 $ 432 2022 420 2023 414 2024 406 2025 308 Thereafter 985 Total lease payments $ 2,965 Less: Imputed Interest 287 Present value of lease liabilities $ 2,678
Summary of Weighted Average Remaining Lease Terms And Discount Rates For Operating Leases	The weighted average remaining lease terms and discount rates for all of our operating leases were as follows as of December 31, 2020: Weighted-average remaining lease term - operating leases (years) 6.60 Weighted-average discount rate - operating leases 2.85 %

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)Segment$ / shares	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Line Items]
Allowance for loan losses related to commercial, commercial real estate and farm real estate loans	$ 750,000
Number of days reaching which loans are considered for nonaccrual status	90 days
Federal Home Loan Bank par value \| $ / shares	$ 100
Reserve amount	$ 0
Number of operating segments \| Segment	1
ASU 2018-13 [Member]
Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 1, 2020
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2018-15 [Member]
Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 1, 2020
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2018-17 [Member]
Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 1, 2020
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2018-18 [Member]
Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 1, 2020
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2016-13 [Member]
Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false]	true
ASU 2019-05 [Member]
Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false]	true
Cash and Cash Equivalents [Member] \| Interest Rate Swap [Member]
Significant Accounting Policies [Line Items]
Cash pledged as collateral	$ 11,300,000
Unsecured Debt [Member]
Significant Accounting Policies [Line Items]
Retail loans past due charge off period	90 days
Secured Debt [Member]
Significant Accounting Policies [Line Items]
Residential real estate loans past due assessment of value period	180 days
Other Debt [Member]
Significant Accounting Policies [Line Items]
Loans past due charged down to the net realizable value period	90 days
Maximum [Member]
Significant Accounting Policies [Line Items]
Percentage of insurance commission revenue of total revenue	1.00%	1.00%	1.00%
Original maturities for cash and cash equivalents	90 days
Estimated useful life of intangible assets	12 years
Maximum [Member] \| Furniture and Equipment [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of asset	7 years
Maximum [Member] \| Buildings and Improvements [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of asset	50 years
Maximum [Member] \| WSP [Member]
Significant Accounting Policies [Line Items]
Percentage of insurance commission revenue of total revenue	1.00%	1.00%	1.00%
Maximum [Member] \| CIVB Risk Management, Inc. [Member]
Significant Accounting Policies [Line Items]
Percentage of insurance commission revenue of total revenue	1.00%	1.00%	1.00%
Minimum [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of intangible assets	5 years
Minimum [Member] \| Furniture and Equipment [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of asset	3 years
Minimum [Member] \| Buildings and Improvements [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of asset	7 years

Merger - Additional Information

Merger - Additional Information (Detail) - UCB [Member] - USD ($)	Sep. 14, 2018	Dec. 31, 2018
Business Combinations [Line Items]
Date of acquisition completion	Sep. 14, 2018
Acquisition cash paid	$ 12,675,000
Common shares issued to shareholders	4,277,430
Stock and cash transaction aggregate consideration	$ 117,344,000
Total assets of UCB prior to the merger	537,875,000
Assets, loan	298,319,000
Assets, Deposit	$ 475,944,000
Core deposit intangibles and other intangibles, amortization period	10 years
Compensation Expense [Member]
Business Combinations [Line Items]
Acquisition-related costs		$ 5,231,000
Contracted Data Processing [Member]
Business Combinations [Line Items]
Acquisition-related costs		5,515,000
Professional Services [Member]
Business Combinations [Line Items]
Acquisition-related costs		1,638,000
Marketing Expense [Member]
Business Combinations [Line Items]
Acquisition-related costs		131,000
Other Operating Expense [Member]
Business Combinations [Line Items]
Acquisition-related costs		$ 220,000

Merger - Schedule of Financial

Merger - Schedule of Financial Information for Former Included in Consolidated Statement of Operations (Detail) - USD ($)	3 Months Ended								4 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Net interest income after provision for loan losses										$ 79,615,000	$ 84,065,000	$ 65,327,000
Noninterest income										28,182,000	22,443,000	18,131,000
Net income	$ 10,173,000	$ 7,682,000	$ 6,504,000	$ 7,833,000	$ 7,841,000	$ 7,708,000	$ 8,660,000	$ 9,669,000		$ 32,192,000	$ 33,878,000	$ 14,139,000
Former UCB [Member]
Business Acquisition [Line Items]
Net interest income after provision for loan losses									$ 3,227,000
Noninterest income									373,000
Net income									$ 1,707,000

Merger - Schedule of Recognized

Merger - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Detail) - USD ($)	Sep. 14, 2018	Dec. 31, 2020	Dec. 31, 2019
Net assets acquired:
Goodwill		$ 76,851,000	$ 76,851,000
UCB [Member]
Business Acquisition [Line Items]
Consideration paid	$ 117,344,000
Net assets acquired:
Cash and due from financial institutions	156,472,000
Securities available for sale	43,214,000
Equity securities	212,000
Loans held for sale	492,000
Loans, net	298,319,000
Other securities	3,527,000
Premises and equipment	5,291,000
Accrued interest receivable	950,000
Core deposit intangible	7,518,000
Bank owned life insurance	17,193,000
Other assets	10,361,000
Noninterest-bearing deposits	(112,787,000)
Interest-bearing deposits	(363,157,000)
Other liabilities	(17,000)
Net assets acquired excluding goodwill	67,588,000
Goodwill	$ 49,756,000

Securities - Available for Sale

Securities - Available for Sale Securities (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost, Total securities available for sale	$ 336,316,000	$ 342,192,000
Gross Unrealized Gains	27,183,000	16,476,000
Gross Unrealized Losses	(35,000)	(169,000)
Fair Value	363,464,000	358,499,000
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost, Total securities available for sale	21,479,000	19,401,000
Gross Unrealized Gains	220,000	204,000
Gross Unrealized Losses	(6,000)	(4,000)
Fair Value	21,693,000	19,601,000
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost, Total securities available for sale	208,013,000	193,646,000
Gross Unrealized Gains	21,000,000	12,409,000
Gross Unrealized Losses	(1,000)	(21,000)
Fair Value	229,012,000	206,034,000
Mortgage-back Securities in Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost, Total securities available for sale	106,824,000	129,145,000
Gross Unrealized Gains	5,963,000	3,863,000
Gross Unrealized Losses	(28,000)	(144,000)
Fair Value	$ 112,759,000	$ 132,864,000

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Investments Debt And Equity Securities [Abstract]
Amortized Cost, Due in one year or less	$ 11,749,000
Amortized Cost, Due from one to five years	13,675,000
Amortized Cost, Due from five to ten years	28,114,000
Amortized Cost, Due after ten years	175,954,000
Amortized Cost, Mortgage-backed securities in government sponsored entities	106,824,000
Amortized Cost, Total securities available for sale	336,316,000	$ 342,192,000
Fair Value, Due in one year or less	11,898,000
Fair Value, Due from one to five years	14,118,000
Fair Value, Due from five to ten years	30,236,000
Fair Value, Due after ten years	194,453,000
Fair Value, Mortgage-backed securities in government sponsored entities	112,759,000
Fair Value, Total securities available for sale	$ 363,464,000	$ 358,499,000

Securities - Additional Informa

Securities - Additional Information (Detail)	Dec. 31, 2020USD ($)Security	Dec. 31, 2019USD ($)
Investments Debt And Equity Securities [Abstract]
Carrying value of pledged securities \| $	$ 159,527,000	$ 139,004,000
Number of securities in portfolio with unrealized losses \| Security	11

Securities - Proceeds from Sale

Securities - Proceeds from Sales of Securities, Gross Realized Gains and Losses (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Sale proceeds	$ 1,455,000	$ 17,570,000	$ 14,667,000
Gross realized gains	94,000	47,000	6,000
Gross realized losses	0	43,000	393,000
Gains (losses) from securities called or settled by the issuer	$ 0	$ 28,000	$ (26,000)

Securities - Securities with Un

Securities - Securities with Unrealized Losses Not Recognized in Income (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Schedule of Available-for-sale Securities [Line Items]
12 Months or less, Fair Value	$ 14,130,000	$ 12,600,000
12 Months or less, Unrealized Loss	(34,000)	(112,000)
More than 12 months, Fair Value	126,000	11,140,000
More than 12 months, Unrealized Loss	(1,000)	(57,000)
Total Fair Value	14,256,000	23,740,000
Total Unrealized Loss	(35,000)	(169,000)
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or less, Fair Value	6,501,000
12 Months or less, Unrealized Loss	(5,000)
More than 12 months, Fair Value	126,000	3,408,000
More than 12 months, Unrealized Loss	(1,000)	(4,000)
Total Fair Value	6,627,000	3,408,000
Total Unrealized Loss	(6,000)	(4,000)
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or less, Fair Value	1,874,000	1,947,000
12 Months or less, Unrealized Loss	(1,000)	(21,000)
Total Fair Value	1,874,000	1,947,000
Total Unrealized Loss	(1,000)	(21,000)
Mortgage-backed Securities in Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or less, Fair Value	5,755,000	10,653,000
12 Months or less, Unrealized Loss	(28,000)	(91,000)
More than 12 months, Fair Value		7,732,000
More than 12 months, Unrealized Loss		(53,000)
Total Fair Value	5,755,000	18,385,000
Total Unrealized Loss	$ (28,000)	$ (144,000)

Securities - Schedule of Net Ga

Securities - Schedule of Net Gains and Losses on Equity Investments Recognized in Earnings and Portion of Unrealized Gains and Losses for Period that Relates to Equity Investments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Net gains (losses) recognized on equity securities during the year	$ (57,000)	$ 121,000	$ 26,000
Less: Net gains realized on the sale of equity securities during the period	6,000
Unrealized gains (losses) recognized in equity securities held at December 31	$ (51,000)	$ 121,000

Loans - Loan Balances (Detail)

Loans - Loan Balances (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Total Loans	$ 2,057,502,000	$ 1,708,970,000
Allowance for loan losses	(25,028,000)	(14,767,000)
Net loans	2,032,474,000	1,694,203,000
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	409,876,000	203,110,000
Commercial Real Estate Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	278,413,000	245,606,000
Commercial Real Estate Non Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	705,072,000	592,222,000
Residential Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	442,588,000	463,032,000
Real Estate Construction [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	175,609,000	155,825,000
Farm Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	33,102,000	34,114,000
Consumer and Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	$ 12,842,000	$ 15,061,000

Loans - Additional Information

Loans - Additional Information (Detail)	12 Months Ended
Loans - Additional Information (Detail)	Dec. 31, 2020USD ($)Loan	Dec. 31, 2019USD ($)Contract	Dec. 31, 2018Contract
Accounts Notes And Loans Receivable [Line Items]
Total Loans	$ 2,057,502,000	$ 1,708,970,000
Net deferred loan fees	5,998,000	$ 488,000
Number of loans processed \| Contract		1	2
Loans processed	0
Loans borrowed under paycheck protection program lending facility	183,700,000
Paycheck Protection Program Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Net deferred loan fees	$ 5,194,000
Number of loans processed \| Loan	2,300
Loans processed	$ 259,100,000
Loans forgiven or paid off	41,800,000
SBA fee recognized in interest income	9,900,000
Fees accreted to income	4,700,000
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	$ 409,876,000	$ 203,110,000
Number of loans processed \| Loan	813
Loans processed	$ 431,283,000
Commercial and Agriculture [Member] \| Paycheck Protection Program Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Total Loans	$ 217,295,000

Loans - Loans to Directors and

Loans - Loans to Directors and Executive Officers Including Immediate Families (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Receivables Other Related Parties And Retainage [Abstract]
Balance - Beginning of year	$ 9,909,000	$ 8,722,000
New loans and advances	1,153,000	3,057,000
Repayments	(3,004,000)	(2,574,000)
Effect of changes to related parties	417,000	704,000
Balance - End of year	$ 8,475,000	$ 9,909,000

Allowance for Loan Losses - Add

Allowance for Loan Losses - Additional Information (Detail)	12 Months Ended
Allowance for Loan Losses - Additional Information (Detail)	Dec. 31, 2020USD ($)LoanSecurityLoan	Dec. 31, 2019USD ($)ContractSecurityLoan	Dec. 31, 2018USD ($)ContractSecurityLoan
Accounts Notes And Loans Receivable [Line Items]
Period for calculating Loss migration rates of portfolio segments	3 years
Allowance for loan losses	$ 25,028,000	$ 14,767,000
Provision for loan losses	$ 10,112,000	1,035,000	$ 780,000
Percentage of eligible paycheck protection program loan	100.00%
Number of days past due for loans to be considered as nonperforming	90 days
Reasonable period for nonperforming TDRs to be returned to performing status	6 months
Number of days reaching where loans are considered for nonaccrual status	90 days
Conditions where loans are considered for nonaccrual status	A loan may be returned to accruing status only if one of three conditions are met: the loan is well-secured and none of the principal and interest has been past due for a minimum of 90 days; the loan is a TDR and the borrower has made a minimum of six months payments; or the principal and interest payments are reasonably assured and a sustained period of performance has occurred, generally six months.
Gross interest income recorded on nonaccrual loans	$ 536,000	571,000	587,000
Interest income on nonaccrual loans recognized on cash basis	477,000	$ 379,000	$ 360,000
Loans modified as troubled debt restructuring	$ 0
Defaulted loans \| SecurityLoan	0	0	0
Impaired loans	greater than $350
Number of loans modified \| Contract		1	2
Foreclosed assets	$ 31,000	$ 0
Allowance for loan losses recorded for acquired loans	0	0
Residential Mortgage [Member]
Accounts Notes And Loans Receivable [Line Items]
Residential mortgages in process of foreclosure	741,000	1,022,000
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Provision for loan losses	604,000	500,000	$ 265,000
Loans modified as troubled debt restructuring	$ 431,283,000
Number of loans modified \| Loan	813
Commercial and Agriculture [Member] \| Second Modifications [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans modified as troubled debt restructuring	$ 73,786,000
Number of loans modified \| Loan	55
TDRs [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses	$ 35,000	$ 91,000	$ 141,000

Allowance for Loan Losses - Cha

Allowance for Loan Losses - Changes in the Allowance for Loan Losses (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts Notes And Loans Receivable [Line Items]
Beginning balance	$ 14,767,000	$ 13,679,000	$ 13,134,000
Charge-offs	(465,000)	(776,000)	(903,000)
Recoveries	614,000	829,000	668,000
Provision (Credit)	10,112,000	1,035,000	780,000
Ending Balance	25,028,000	14,767,000	13,679,000
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning balance	2,219,000	1,747,000	1,562,000
Charge-offs	(20,000)	(114,000)	(249,000)
Recoveries	7,000	86,000	169,000
Provision (Credit)	604,000	500,000	265,000
Ending Balance	2,810,000	2,219,000	1,747,000
Commercial Real Estate Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning balance	2,541,000	1,962,000	2,043,000
Charge-offs	(148,000)	(161,000)	(193,000)
Recoveries	259,000	289,000	158,000
Provision (Credit)	1,405,000	451,000	(46,000)
Ending Balance	4,057,000	2,541,000	1,962,000
Commercial Real Estate Non Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning balance	6,584,000	5,803,000	5,307,000
Charge-offs			(153,000)
Recoveries	48,000	102,000	28,000
Provision (Credit)	5,819,000	679,000	621,000
Ending Balance	12,451,000	6,584,000	5,803,000
Residential Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning balance	1,582,000	1,531,000	1,910,000
Charge-offs	(236,000)	(294,000)	(105,000)
Recoveries	218,000	259,000	208,000
Provision (Credit)	920,000	86,000	(482,000)
Ending Balance	2,484,000	1,582,000	1,531,000
Real Estate Construction [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning balance	1,250,000	1,046,000	834,000
Charge-offs		(24,000)
Recoveries	4,000	3,000
Provision (Credit)	1,185,000	225,000	212,000
Ending Balance	2,439,000	1,250,000	1,046,000
Farm Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning balance	344,000	397,000	430,000
Recoveries	13,000	5,000	5,000
Provision (Credit)	(19,000)	(58,000)	(38,000)
Ending Balance	338,000	344,000	397,000
Consumer and Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning balance	247,000	284,000	290,000
Charge-offs	(61,000)	(183,000)	(203,000)
Recoveries	65,000	85,000	100,000
Provision (Credit)	(42,000)	61,000	97,000
Ending Balance	209,000	247,000	284,000
Unallocated [Member]
Accounts Notes And Loans Receivable [Line Items]
Beginning balance		909,000	758,000
Provision (Credit)	240,000	$ (909,000)	151,000
Ending Balance	$ 240,000		$ 909,000

Allowance for Loan Losses - End

Allowance for Loan Losses - Ending Allocation of Allowance for Loan Losses and Loan Balances Outstanding (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	$ 107,000	$ 91,000
Allowance for loan losses, Collectively evaluated for impairment	24,921,000	14,676,000
Allowance for loan losses, Total	25,028,000	14,767,000	$ 13,679,000	$ 13,134,000
Outstanding loan balances, Individually evaluated for impairment	2,666,000	3,597,000
Outstanding loan balances, Collectively evaluated for impairment	2,054,448,000	1,704,906,000
Outstanding loan balances, Total	2,057,502,000	1,708,970,000
Receivables Acquired with Deteriorated Credit Quality [Member]
Accounts Notes And Loans Receivable [Line Items]
Loan balance of loans acquired with credit deterioration	388,000	467,000
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	73,000
Allowance for loan losses, Collectively evaluated for impairment	2,737,000	2,219,000
Allowance for loan losses, Total	2,810,000	2,219,000	1,747,000	1,562,000
Outstanding loan balances, Individually evaluated for impairment	74,000	367,000
Outstanding loan balances, Collectively evaluated for impairment	409,802,000	202,743,000
Outstanding loan balances, Total	409,876,000	203,110,000
Commercial Real Estate Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	5,000	9,000
Allowance for loan losses, Collectively evaluated for impairment	4,052,000	2,532,000
Allowance for loan losses, Total	4,057,000	2,541,000	1,962,000	2,043,000
Outstanding loan balances, Individually evaluated for impairment	980,000	426,000
Outstanding loan balances, Collectively evaluated for impairment	277,433,000	245,180,000
Outstanding loan balances, Total	278,413,000	245,606,000
Commercial Real Estate Non Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	12,451,000	6,584,000
Allowance for loan losses, Total	12,451,000	6,584,000	5,803,000	5,307,000
Outstanding loan balances, Individually evaluated for impairment	48,000	374,000
Outstanding loan balances, Collectively evaluated for impairment	705,024,000	591,848,000
Outstanding loan balances, Total	705,072,000	592,222,000
Residential Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	29,000	82,000
Allowance for loan losses, Collectively evaluated for impairment	2,455,000	1,500,000
Allowance for loan losses, Total	2,484,000	1,582,000	1,531,000	1,910,000
Outstanding loan balances, Individually evaluated for impairment	946,000	1,764,000
Outstanding loan balances, Collectively evaluated for impairment	441,254,000	460,801,000
Outstanding loan balances, Total	442,588,000	463,032,000
Residential Real Estate [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Accounts Notes And Loans Receivable [Line Items]
Loan balance of loans acquired with credit deterioration	388,000	467,000
Real Estate Construction [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	2,439,000	1,250,000
Allowance for loan losses, Total	2,439,000	1,250,000	1,046,000	834,000
Outstanding loan balances, Collectively evaluated for impairment	175,609,000	155,825,000
Outstanding loan balances, Total	175,609,000	155,825,000
Farm Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	338,000	344,000
Allowance for loan losses, Total	338,000	344,000	397,000	430,000
Outstanding loan balances, Individually evaluated for impairment	618,000	666,000
Outstanding loan balances, Collectively evaluated for impairment	32,484,000	33,448,000
Outstanding loan balances, Total	33,102,000	34,114,000
Consumer and Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	209,000	247,000
Allowance for loan losses, Total	209,000	247,000	284,000	290,000
Outstanding loan balances, Collectively evaluated for impairment	12,842,000	15,061,000
Outstanding loan balances, Total	12,842,000	$ 15,061,000
Unallocated [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	240,000
Allowance for loan losses, Total	$ 240,000		$ 909,000	$ 758,000

Allowance for Loan Losses - Cre

Allowance for Loan Losses - Credit Exposures by Internally Assigned Grades (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	$ 1,674,591,000	$ 1,301,919,000
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	409,876,000	203,110,000
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	278,413,000	245,606,000
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	705,072,000	592,222,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	87,601,000	80,312,000
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	159,661,000	145,260,000
Farm Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	33,102,000	34,114,000
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	866,000	1,295,000
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	1,525,796,000	1,276,090,000
Pass [Member] \| Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	401,636,000	199,649,000
Pass [Member] \| Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	248,316,000	237,171,000
Pass [Member] \| Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	604,909,000	588,633,000
Pass [Member] \| Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	81,409,000	73,289,000
Pass [Member] \| Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	158,207,000	145,251,000
Pass [Member] \| Farm Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	30,486,000	30,808,000
Pass [Member] \| Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	833,000	1,289,000
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	84,017,000	11,103,000
Special Mention [Member] \| Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	4,472,000	2,236,000
Special Mention [Member] \| Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	19,429,000	5,617,000
Special Mention [Member] \| Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	58,270,000	2,155,000
Special Mention [Member] \| Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	668,000	528,000
Special Mention [Member] \| Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	962,000
Special Mention [Member] \| Farm Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	216,000	567,000
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	64,778,000	14,726,000
Substandard [Member] \| Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	3,768,000	1,225,000
Substandard [Member] \| Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	10,668,000	2,818,000
Substandard [Member] \| Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	41,893,000	1,434,000
Substandard [Member] \| Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	5,524,000	6,495,000
Substandard [Member] \| Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	492,000	9,000
Substandard [Member] \| Farm Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	2,400,000	2,739,000
Substandard [Member] \| Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	$ 33,000	$ 6,000

Allowance for Loan Losses - Per

Allowance for Loan Losses - Performing and Nonperforming Loans (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Performing	$ 382,911,000	$ 407,051,000
Total	382,911,000	407,051,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	354,987,000	382,720,000
Total	354,987,000	382,720,000
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	15,948,000	10,565,000
Total	15,948,000	10,565,000
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	11,976,000	13,766,000
Total	$ 11,976,000	$ 13,766,000

Allowance for Loan Losses - Agi

Allowance for Loan Losses - Aging Analysis of Past Due Loans (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 3,624,000	$ 5,909,000
Current	2,053,490,000	1,702,594,000
Total Loans	2,057,502,000	1,708,970,000
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,235,000	3,008,000
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	897,000	342,000
90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,492,000	2,559,000
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Purchased Credit-Impaired Loans	388,000	467,000
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	192,000	168,000
Current	409,684,000	202,942,000
Total Loans	409,876,000	203,110,000
Commercial and Agriculture [Member] \| 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	117,000	27,000
Commercial and Agriculture [Member] \| 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	25,000	35,000
Commercial and Agriculture [Member] \| 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	50,000	106,000
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	106,000	1,179,000
Current	278,307,000	244,427,000
Total Loans	278,413,000	245,606,000
Commercial Real Estate Owner Occupied [Member] \| 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		453,000
Commercial Real Estate Owner Occupied [Member] \| 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,000	63,000
Commercial Real Estate Owner Occupied [Member] \| 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	102,000	663,000
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,000	8,000
Current	705,066,000	592,214,000
Total Loans	705,072,000	592,222,000
Commercial Real Estate Non Owner Occupied [Member] \| 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,000	8,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,240,000	4,372,000
Current	438,960,000	458,193,000
Total Loans	442,588,000	463,032,000
Residential Real Estate [Member] \| 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,059,000	2,399,000
Residential Real Estate [Member] \| 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	867,000	198,000
Residential Real Estate [Member] \| 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,314,000	1,775,000
Residential Real Estate [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Purchased Credit-Impaired Loans	388,000	467,000
Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	175,609,000	155,825,000
Total Loans	175,609,000	155,825,000
Farm Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,000	7,000
Current	33,098,000	34,107,000
Total Loans	33,102,000	34,114,000
Farm Real Estate [Member] \| 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,000	7,000
Consumer and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	76,000	175,000
Current	12,766,000	14,886,000
Total Loans	12,842,000	15,061,000
Consumer and Other [Member] \| 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	59,000	129,000
Consumer and Other [Member] \| 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,000	$ 46,000
Consumer and Other [Member] \| 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 16,000

Allowance for Loan Losses - Sum

Allowance for Loan Losses - Summary of Nonaccrual Loans Excluding Purchased Credit-Impaired (PCI) Loans (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	$ 5,125,000	$ 5,599,000
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	139,000	173,000
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	964,000	938,000
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	6,000	8,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	3,893,000	4,183,000
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	7,000	9,000
Farm Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	85,000	284,000
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	$ 31,000	$ 4,000

Allowance for Loan Losses - Sch

Allowance for Loan Losses - Schedule of TDR (Detail)	12 Months Ended
Allowance for Loan Losses - Schedule of TDR (Detail)	Dec. 31, 2020Loan	Dec. 31, 2019USD ($)Contract	Dec. 31, 2018USD ($)Contract
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans modified \| Contract		1	2
Pre- Modification Outstanding Recorded Investment		$ 382,000	$ 133,000
Post-Modification Outstanding Recorded Investment		$ 382,000	$ 133,000
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans modified \| Loan	813
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans modified \| Contract		1
Pre- Modification Outstanding Recorded Investment		$ 382,000
Post-Modification Outstanding Recorded Investment		$ 382,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans modified \| Contract			1
Pre- Modification Outstanding Recorded Investment			$ 23,000
Post-Modification Outstanding Recorded Investment			$ 23,000
Farm Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans modified \| Contract			1
Pre- Modification Outstanding Recorded Investment			$ 110,000
Post-Modification Outstanding Recorded Investment			$ 110,000

Allowance for Loan Losses - S_2

Allowance for Loan Losses - Schedule of Loan Modifications (Detail)		12 Months Ended
		Dec. 31, 2020USD ($)Loan	Dec. 31, 2019Contract	Dec. 31, 2018Contract
Financing Receivable Modifications [Line Items]
Number of loans modified \| Contract			1	2
Loans modified as troubled debt restructuring		$ 0
Second Modifications [Member] \| CARES Act [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Loan		55
Loans modified as troubled debt restructuring		$ 73,786,000
Percent of Loans Outstanding	[1]	4.01%
Commercial and Agriculture [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Loan		813
Loans modified as troubled debt restructuring		$ 431,283,000
Commercial and Agriculture [Member] \| Second Modifications [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Loan		55
Loans modified as troubled debt restructuring		$ 73,786,000
Commercial and Agriculture [Member] \| Second Modifications [Member] \| CARES Act [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Loan		21
Loans modified as troubled debt restructuring		$ 4,069,000
Percent of Loans Outstanding	[1]	0.22%
Commercial Real Estate Owner Occupied [Member] \| Second Modifications [Member] \| CARES Act [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Loan		12
Loans modified as troubled debt restructuring		$ 13,072,000
Percent of Loans Outstanding	[1]	0.71%
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Contract			1
Commercial Real Estate Non Owner Occupied [Member] \| Second Modifications [Member] \| CARES Act [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Loan		19
Loans modified as troubled debt restructuring		$ 51,027,000
Percent of Loans Outstanding	[1]	2.77%
Residential Real Estate [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Contract				1
Residential Real Estate [Member] \| Second Modifications [Member] \| CARES Act [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Loan		1
Loans modified as troubled debt restructuring		$ 180,000
Percent of Loans Outstanding	[1]	0.01%
Real Estate Construction [Member] \| Second Modifications [Member] \| CARES Act [Member]
Financing Receivable Modifications [Line Items]
Number of loans modified \| Loan		2
Loans modified as troubled debt restructuring		$ 5,438,000
Percent of Loans Outstanding	[1]	0.30%

[1]	excluding PPP loans

Allowance for Loan Losses - Imp

Allowance for Loan Losses - Impaired Financing Receivables Excluding PCI Loans - Recorded Investment and Unpaid Principal Balances (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	$ 2,338,000	$ 3,146,000
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	2,363,000	3,218,000
Impaired financing receivables, with an allowance recorded, Recorded Investment	328,000	451,000
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	332,000	455,000
Impaired financing receivables, with an allowance recorded, Related Allowance	107,000	91,000
Impaired financing receivables, Recorded Investment, Total	2,666,000	3,597,000
Impaired financing receivables, Unpaid Principal Balance, Total	2,695,000	3,673,000
Impaired financing receivables, Related Allowance, Total	107,000	91,000
Commercial and Agriculture [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment		367,000
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance		367,000
Impaired financing receivables, with an allowance recorded, Recorded Investment	74,000
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	74,000
Impaired financing receivables, with an allowance recorded, Related Allowance	73,000
Impaired financing receivables, Recorded Investment, Total	74,000	367,000
Impaired financing receivables, Unpaid Principal Balance, Total	74,000	367,000
Impaired financing receivables, Related Allowance, Total	73,000
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	757,000	168,000
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	757,000	168,000
Impaired financing receivables, with an allowance recorded, Recorded Investment	223,000	258,000
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	223,000	258,000
Impaired financing receivables, with an allowance recorded, Related Allowance	5,000	9,000
Impaired financing receivables, Recorded Investment, Total	980,000	426,000
Impaired financing receivables, Unpaid Principal Balance, Total	980,000	426,000
Impaired financing receivables, Related Allowance, Total	5,000	9,000
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	48,000	374,000
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	48,000	374,000
Impaired financing receivables, Recorded Investment, Total	48,000	374,000
Impaired financing receivables, Unpaid Principal Balance, Total	48,000	374,000
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	915,000	1,571,000
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	940,000	1,643,000
Impaired financing receivables, with an allowance recorded, Recorded Investment	31,000	193,000
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	35,000	197,000
Impaired financing receivables, with an allowance recorded, Related Allowance	29,000	82,000
Impaired financing receivables, Recorded Investment, Total	946,000	1,764,000
Impaired financing receivables, Unpaid Principal Balance, Total	975,000	1,840,000
Impaired financing receivables, Related Allowance, Total	29,000	82,000
Farm Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	618,000	666,000
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	618,000	666,000
Impaired financing receivables, Recorded Investment, Total	618,000	666,000
Impaired financing receivables, Unpaid Principal Balance, Total	$ 618,000	$ 666,000

Allowance for Loan Losses - I_2

Allowance for Loan Losses - Impaired Loans - Average Recorded Investment and Interest Income Recognized (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 2,859,000	$ 3,085,000	$ 3,520,000
Interest Income Recognized	116,000	172,000	167,000
Commercial and Agriculture [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	88,000	367,000	636,000
Interest Income Recognized	4,000	33,000	25,000
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	520,000	456,000	610,000
Interest Income Recognized	27,000	32,000	33,000
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	243,000	308,000	39,000
Interest Income Recognized	16,000	20,000	5,000
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,361,000	1,271,000	1,519,000
Interest Income Recognized	43,000	58,000	75,000
Farm Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	647,000	683,000	716,000
Interest Income Recognized	$ 26,000	$ 29,000	$ 29,000

Allowance for Loan Losses - S_3

Allowance for Loan Losses - Schedule of Changes in Amortized Yield for PCI Loans (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Movement Schedule Roll Forward
Balance at beginning of period	$ 255,000	$ 336,000
Acquisition of PCI loans	0	0
Accretion	(336,000)	(164,000)
Transfers from non-accretable to accretable	306,000	83,000
Balance at end of period	$ 225,000	$ 255,000

Allowance for Loan Losses - S_4

Allowance for Loan Losses - Schedule of Loans Acquired and Accounted (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Outstanding balance	$ 687,000	$ 1,149,000
Carrying amount	$ 388,000	$ 467,000

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) - Components of Other Comprehensive Income Loss (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Before Tax	$ 9,804,000	$ 10,539,000	$ (415,000)
Other Comprehensive Income (Loss), Tax Effect	2,059,000	2,213,000	(87,000)
Other Comprehensive Income (Loss), Net of Tax	7,745,000	8,326,000	(328,000)
Net unrealized Gains (Losses) on Investment Securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income (loss) before reclassifications, Before Tax	10,935,000	13,368,000	(1,122,000)
Amounts reclassified from accumulated other comprehensive income (loss), Before Tax	(94,000)	(32,000)	413,000
Reclassification of equity securities from accumulated other comprehensive income (loss), Before Tax			(352,000)
Other Comprehensive Income (Loss), Before Tax	10,841,000	13,336,000	(1,061,000)
Other comprehensive income (loss) before reclassifications, Tax Effect	2,297,000	2,807,000	(236,000)
Amounts reclassified from accumulated other comprehensive income (loss), Tax Effect	(20,000)	(7,000)	87,000
Reclassification of equity securities from accumulated other comprehensive income (loss), Tax Effect			(74,000)
Other Comprehensive Income (Loss), Tax Effect	2,277,000	2,800,000	(223,000)
Other comprehensive income (loss) before reclassifications, Net of Tax	8,638,000	10,561,000	(886,000)
Amounts reclassified from accumulated other comprehensive income (loss), Net of Tax	(74,000)	(25,000)	326,000
Reclassification of equity securities from accumulated other comprehensive income (loss), Net of Tax			(278,000)
Other Comprehensive Income (Loss), Net of Tax	8,564,000	10,536,000	(838,000)
Defined Benefit Plans [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income (loss) before reclassifications, Before Tax	(1,326,000)	(2,953,000)	497,000
Amounts reclassified from accumulated other comprehensive income (loss), Before Tax	289,000	156,000	149,000
Other Comprehensive Income (Loss), Before Tax	(1,037,000)	(2,797,000)	646,000
Other comprehensive income (loss) before reclassifications, Tax Effect	(279,000)	(620,000)	104,000
Amounts reclassified from accumulated other comprehensive income (loss), Tax Effect	61,000	33,000	32,000
Other Comprehensive Income (Loss), Tax Effect	(218,000)	(587,000)	136,000
Other comprehensive income (loss) before reclassifications, Net of Tax	(1,047,000)	(2,333,000)	393,000
Amounts reclassified from accumulated other comprehensive income (loss), Net of Tax	228,000	123,000	117,000
Other Comprehensive Income (Loss), Net of Tax	$ (819,000)	$ (2,210,000)	$ 510,000

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) - Changes in Each Component of Accumulated Other Comprehensive Income (Loss), Net of Tax (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 330,126,000	$ 298,898,000	$ 184,461,000
Total other comprehensive income (loss)	7,745,000	8,326,000	(50,000)
Ending balance	350,108,000	330,126,000	298,898,000
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	12,883,000	2,347,000	3,185,000
Other comprehensive income (loss) before reclassifications	8,638,000	10,561,000	(886,000)
Amounts reclassified from accumulated other comprehensive income (loss)	(74,000)	(25,000)	326,000
Total other comprehensive income (loss)	8,564,000	10,536,000	(560,000)
Reclassification of equity securities from accumulated other comprehensive income (loss)			(278,000)
Ending balance	21,447,000	12,883,000	2,347,000
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(6,009,000)	(3,799,000)	(4,309,000)
Other comprehensive income (loss) before reclassifications	(1,047,000)	(2,333,000)	393,000
Amounts reclassified from accumulated other comprehensive income (loss)	228,000	123,000	117,000
Total other comprehensive income (loss)	(819,000)	(2,210,000)	510,000
Ending balance	(6,828,000)	(6,009,000)	(3,799,000)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	6,874,000	(1,452,000)	(1,124,000)
Other comprehensive income (loss) before reclassifications	7,591,000	8,228,000	(493,000)
Amounts reclassified from accumulated other comprehensive income (loss)	154,000	98,000	443,000
Total other comprehensive income (loss)	7,745,000	8,326,000	(50,000)
Reclassification of equity securities from accumulated other comprehensive income (loss)			(278,000)
Ending balance	$ 14,619,000	$ 6,874,000	$ (1,452,000)

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) - Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Loss (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net gain (loss) on sale of securities									$ 94,000	$ 32,000	$ (413,000)
Other operating expenses									(9,096,000)	(9,288,000)	(7,335,000)
Income tax expense									(4,940,000)	(5,683,000)	(2,640,000)
Net income	$ 10,173,000	$ 7,682,000	$ 6,504,000	$ 7,833,000	$ 7,841,000	$ 7,708,000	$ 8,660,000	$ 9,669,000	32,192,000	33,878,000	14,139,000
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income									(154,000)	(98,000)	(443,000)
Unrealized Gains (Losses) on Available-for-Sale Securities [Member] \| Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net gain (loss) on sale of securities									94,000	32,000	(413,000)
Income tax expense									(20,000)	(7,000)	87,000
Net income									74,000	25,000	(326,000)
Accumulated Defined Benefit Plans Adjustment, Actuarial Losses [Member] \| Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other operating expenses									(289,000)	(156,000)	(149,000)
Income tax expense									61,000	33,000	32,000
Net income									$ (228,000)	$ (123,000)	$ (117,000)

Premises and Equipment - Year-E

Premises and Equipment - Year-End Premises and Equipment (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 58,563,000	$ 56,686,000
Accumulated depreciation	(35,983,000)	(33,815,000)
Premises and equipment, net	22,580,000	22,871,000
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	6,879,000	6,651,000
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	28,835,000	28,047,000
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 22,849,000	$ 21,988,000

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Abstract]
Depreciation	$ 2,253,000	$ 2,240,000	$ 1,515,000

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 76,851,000	$ 76,851,000
Amortization of core deposit intangible assets	913,000	945,000	$ 366,000
Aggregate mortgage servicing rights (MSRs) amortization	524,000	247,000	$ 126,000
Fair value of servicing rights	$ 2,245,000	$ 1,562,000
Fair value of servicing rights, discount rate	12.00%	12.00%
Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value of servicing rights prepayment speed	12.00%	11.40%
Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value of servicing rights prepayment speed	50.00%	50.00%
Weighted Average [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value of servicing rights, discount rate	0.93%	0.85%

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Acquired Intangible Assets (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 8,075,000
Core deposit intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,792,000	$ 14,792,000
Accumulated Amortization	8,963,000	8,049,000
Net Carrying Amount	$ 5,829,000	$ 6,743,000

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Mortgage Servicing Rights (MSRs) and Related Valuation Allowance (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Mortgage Servicing Rights:
Beginning of year	$ 1,562,000	$ 1,664,000
Additions	1,310,000	247,000
Amortized to expense	524,000	247,000
Change in valuation allowance	102,000	102,000
End of year	2,246,000	1,562,000
Valuation allowance:
Beginning of year	102,000
Additions expensed	162,000	102,000
Reductions credited to operations	(60,000)
End of year	$ 204,000	$ 102,000

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Estimated Amortization Expense (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
2021	$ 1,017,000
2022	994,000
2023	966,000
2024	928,000
2025	832,000
Thereafter	3,338,000
Net Carrying Amount	8,075,000
MSRs [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2021	126,000
2022	126,000
2023	125,000
2024	124,000
2025	124,000
Thereafter	1,621,000
Net Carrying Amount	2,246,000
Core deposit intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2021	891,000
2022	868,000
2023	841,000
2024	804,000
2025	708,000
Thereafter	1,717,000
Net Carrying Amount	$ 5,829,000	$ 6,743,000

Interest-Bearing Deposits - Sum

Interest-Bearing Deposits - Summary of Interest-Bearing Deposits (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deposits [Abstract]
Demand	$ 410,139,000	$ 301,674,000
Savings and Money markets	771,612,000	588,697,000
$250 and over	70,989,000	58,290,000
Certificates of Deposit: Other	169,453,000	168,928,000
Individual Retirement Accounts	46,396,000	48,622,000
Total	$ 1,468,589,000	$ 1,166,211,000

Interest-Bearing Deposits - Sch

Interest-Bearing Deposits - Scheduled Maturities of Certificates of Deposit (Detail)	Dec. 31, 2020USD ($)
Deposits [Abstract]
2021	$ 209,556,000
2022	58,234,000
2023	11,603,000
2024	3,490,000
2025	2,729,000
Thereafter	1,226,000
Total	$ 286,838,000

Interest-Bearing Deposits - Add

Interest-Bearing Deposits - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deposits [Line Items]
Total deposits	$ 2,189,398,000	$ 1,678,764,000
Total of CDs and IRAs	74,777,000
Principal officers, directors, and their affiliates [Member]
Deposits [Line Items]
Total deposits	$ 12,487,000	$ 8,917,000

Short-Term Borrowings - Summary

Short-Term Borrowings - Summary of Federal Funds Purchased and Other Short-term Borrowings (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum indebtedness during the year	$ 50,000,000	$ 20,000,000	$ 20,000,000
Average balance during the year	$ 288,000	$ 137,000	$ 116,000
Average rate paid during the year	0.35%	2.19%	2.58%
Short Term Borrowings, FHLB advances [Member]
Short-term Debt [Line Items]
Outstanding balance at year end		$ 101,500,000	$ 188,600,000
Maximum indebtedness during the year	$ 102,700,000	192,700,000	225,300,000
Average balance during the year	$ 8,151,000	$ 112,088,000	$ 113,520,000
Average rate paid during the year	1.64%	2.32%	2.07%
Interest rate on year end balance		1.63%	2.45%

Federal Home Loan Bank Advanc_3

Federal Home Loan Bank Advances - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Long-term Federal Home Loan Bank advances	$ 125,000,000	$ 125,000,000
Maturities, from	2029-05
Maturities, to	2029-10
Outstanding letters of credit with FHLB	$ 20,000,000	20,000,000
FHLB borrowings collateralized by residential mortgage loans	217,500,000	$ 369,750,000
FHLB maximum borrowing capacity	612,308,000
FHLB remaining borrowing capacity	467,308,000
Putable Option [Member] \| Advances One [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB advances	$ 75,000,000
FHLB puttable date	Oct. 22, 2020
Putable Option [Member] \| Advances Two [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB advances	$ 50,000,000
FHLB puttable date	May 23, 2024
Minimum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturities from May 2029 through October 2029, fixed rates	1.03%
Maximum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturities from May 2029 through October 2029, fixed rates	2.05%
Weighted Average [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturities from May 2029 through October 2029, fixed rates	1.44%

Federal Home Loan Bank Advanc_4

Federal Home Loan Bank Advances - Scheduled Principal Reductions of Federal Home Loan Bank Advances Outstanding (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Advances From Federal Home Loan Banks [Abstract]
2029	$ 125,000,000	$ 101,500,000
Total	$ 125,000,000	$ 125,000,000

Securities Sold Under Agreeme_3

Securities Sold Under Agreements To Repurchase - Summary of Securities Pledged as Collateral Under Repurchase Agreements (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Offsetting Liabilities [Line Items]
Total securities pledged	$ 28,914,000	$ 18,674,000	$ 22,199,000
Gross amount of recognized liabilities for repurchase agreements	28,914,000	18,674,000
Amounts related to agreements not included in offsetting disclosures above	0	0
U.S.Treasury Securities [Member]
Offsetting Liabilities [Line Items]
Total securities pledged	899,000	810,000
Obligations of U.S. Government Agencies [Member]
Offsetting Liabilities [Line Items]
Total securities pledged	$ 28,015,000	$ 17,864,000

Securities Sold Under Agreeme_4

Securities Sold Under Agreements to Repurchase - Schedule of Securities Sold Under Agreements to Repurchase (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Outstanding balance at year end	$ 28,914,000	$ 18,674,000	$ 22,199,000
Average balance during the year	$ 24,390,000	$ 18,321,000	$ 18,456,000
Average interest rate during the year	0.10%	0.10%	0.10%
Maximum month-end balance during the year	$ 31,885,000	$ 21,970,000	$ 22,199,000
Weighted average interest rate at year end	0.10%	0.10%	0.10%

Subordinated Debentures - Addit

Subordinated Debentures - Additional Information (Detail)	1 Months Ended			12 Months Ended
Subordinated Debentures - Additional Information (Detail)	Mar. 31, 2007USD ($)	Mar. 31, 2003USD ($)	Mar. 31, 2002USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2007Trust_Preferred_Securities	Sep. 30, 2004USD ($)
Subordinated Borrowing [Line Items]
Redeem and refinance of floating rate subordinated debenture	$ 5,000,000
Refinancing at face value, reduction rate				2.00%
Subordinated debenture, maturity period				30 years
Subordinated debentures, principal amount percentage				100.00%
Minimum [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures may redeem part of principal amount				$ 1,000,000
Futura Ban Corp [Member]
Subordinated Borrowing [Line Items]
Number of additional trust preferred securities acquired \| Trust_Preferred_Securities						2
2.48% Debenture [Member]
Subordinated Borrowing [Line Items]
Debt, face amount				$ 12,500,000
Debt, variable interest rate				2.48%
Redemption of subordinated debentures description				The Company may redeem the subordinated debentures, in whole or in part, in a principal amount with integral multiples of $1,000, at 100% of the principal amount, plus accrued and unpaid interest.
Subordinated Debentures [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, maturity date				Jun. 15, 2035
3.38% Debenture [Member]
Subordinated Borrowing [Line Items]
Debt, face amount					$ 7,500,000
Debt, variable interest rate					3.38%
1.85% Debenture [Member]
Subordinated Borrowing [Line Items]
Debt, face amount					$ 5,000,000
Debt, variable interest rate					1.85%
6.05% Fixed Rate Trust Preferred Securities [Member]
Subordinated Borrowing [Line Items]
Debt, face amount							$ 12,500,000
Debt, interest rate							6.05%
Debt instrument fixed interest rate period				5 years
1.91% Debenture [Member] \| Futura TPF Trust I [Member]
Subordinated Borrowing [Line Items]
Debt, face amount				$ 2,500,000
Debt instrument, variable interest rate percentage				1.91%
1.91% Debenture [Member] \| Futura TPF Trust II [Member]
Subordinated Borrowing [Line Items]
Debt, face amount				$ 1,927,000
Debt instrument, variable interest rate percentage				1.91%
Subordinated Debenture [Member]
Subordinated Borrowing [Line Items]
Issuance of Trust Preferred Securities in exchange for Subordinated Debentures			$ 5,000,000
Trust Preferred Securities [Member]
Subordinated Borrowing [Line Items]
Issuance of Trust Preferred Securities in exchange for Subordinated Debentures		$ 7,500,000
Trust Preferred Securities [Member] \| Futura TPF Trust I [Member]
Subordinated Borrowing [Line Items]
Acquired trust preferred securities				$ 2,500,000
Trust Preferred Securities [Member] \| Futura TPF Trust II [Member]
Subordinated Borrowing [Line Items]
Acquired trust preferred securities				$ 1,927,000

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax (Detail) - USD ($)	12 Months Ended
Income Taxes - Schedule of Income Tax (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Expense Benefit Continuing Operations [Abstract]
Current	$ 6,947,000	$ 4,713,000	$ 2,444,000
State	270,000	307,000	45,000
Deferred	(2,277,000)	663,000	151,000
Income tax expense	$ 4,940,000	$ 5,683,000	$ 2,640,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
Income Taxes - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	21.00%
Valuation allowance	$ 0	$ 0
Liability for uncertain tax positions, current	0
Unrecognized tax benefits	$ 0

Income Taxes - Effective Tax Ra

Income Taxes - Effective Tax Rates Differed from Statutory Federal Income Tax Rate (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income taxes computed at the statutory federal tax rate	$ 7,798,000	$ 8,308,000	$ 3,524,000
Add (subtract) tax effect of:
Nontaxable interest income, net of nondeductible interest expense	(1,293,000)	(1,194,000)	(834,000)
Low income housing tax credit	(1,186,000)	(903,000)	(903,000)
Cash surrender value of BOLI	(205,000)	(211,000)	(143,000)
Nondeductible merger costs			1,034,000
Change in tax position BOLI		(353,000)
Other	(174,000)	36,000	(38,000)
Income tax expense	$ 4,940,000	$ 5,683,000	$ 2,640,000

Income Taxes - Summary of Defer

Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets
Allowance for loan losses	$ 5,256,000	$ 3,245,000
Deferred compensation	1,201,000	1,191,000
Pension costs	304,000	81,000
Intangible assets	312,000	394,000
Purchase accounting adjustments		226,000
Net operating loss carryforward	509,000	1,081,000
Deferred loan fees	1,260,000	102,000
Other	745,000	118,000
Deferred tax asset	9,587,000	6,438,000
Deferred tax liabilities
Tax depreciation in excess of book depreciation	(851,000)	(808,000)
Discount accretion on securities	(10,000)	(18,000)
FHLB stock dividends	(969,000)	(969,000)
Unrealized gain on securities available for sale	(5,606,000)	(3,424,000)
Prepaids	(325,000)	(326,000)
Other	(979,000)	(359,000)
Deferred tax liability	(8,740,000)	(5,904,000)
Net deferred tax asset	$ 847,000	$ 534,000

Retirement Plans - Additional I

Retirement Plans - Additional Information (Detail)	12 Months Ended
Retirement Plans - Additional Information (Detail)	Dec. 31, 2020USD ($)Employee	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Defined Benefit Plan Disclosure [Line Items]
Plan name	401(k) plan
Matching contribution to 401(k) plan	$ 1,226,000	$ 1,074,000	$ 892,000
Employer matching contribution description	The Company’s matching contribution is 100% of an employee’s first three percent contributed and 50% of the next two percent contributed.
Pension plan eligibility age of employees	20 years 6 months
Pension plan eligibility service period of employees	6 months
Pension plan eligibility service hours of employees	1000 hours
Additional benefits under pension plan	$ 0
Interest expense	10,138,000	12,954,000	7,570,000
Unrecognized actuarial loss in accumulated other comprehensive income (loss), net of tax	6,828,000	6,009,000
Unrecognized actuarial loss in accumulated other comprehensive income (loss), tax	1,815,000	1,597,000
Accumulated benefit obligation for defined benefit pension plan	16,656,000	15,570,000
Estimated net loss that will be amortized over the next fiscal year	289,000
Incurred settlement cost	$ 0	$ 0	$ 1,188,000
Rate of compensation increase used to determine the benefit obligation	0.00%	0.00%	0.00%
Long-term rate of return on plan assets	4.44%	4.96%	7.00%
Expected future employer contributions	$ 0
Employer contribution	0	$ 0
Funded status at end of year	(1,399,000)	(387,000)
Shortfall Agreements [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension shortfall expense	130,000	161,000	$ 180,000
Interest expense	$ 9,000	20,000	24,000
Number of individuals under plan \| Employee	10
Supplemental Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum retirement year for participants	10 years
Liability recorded for supplemental retirement plan	$ 3,097,000	2,836,000
Expenses recorded for supplemental retirement plan	429,000	394,000	351,000
Total distribution to participant	$ 168,000	$ 128,000	$ 87,000

Retirement Plans - Information

Retirement Plans - Information about Pension Plan (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in benefit obligation:
Beginning benefit obligation	$ 15,570,000	$ 13,338,000
Service cost			$ 0
Interest cost	484,000	479,000	627,000
Actuarial (gain)/loss	1,898,000	3,546,000
Benefits paid	(1,296,000)	(1,793,000)
Ending benefit obligation	16,656,000	15,570,000	13,338,000
Change in plan assets, at fair value:
Beginning plan assets	15,183,000	15,572,000
Actual return	1,370,000	1,404,000
Employer contribution	0	0
Benefits paid	(1,296,000)	(1,793,000)
Ending plan assets	15,257,000	15,183,000	$ 15,572,000
Funded status at end of year	$ (1,399,000)	$ (387,000)

Retirement Plans - Components o

Retirement Plans - Components of Net Periodic Pension Expense (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Service cost			$ 0
Interest cost	$ 484,000	$ 479,000	627,000
Expected return on plan assets	(748,000)	(811,000)	(1,355,000)
Net amortization and deferral	289,000	156,000	149,000
Net periodic pension cost (benefit)	25,000	(176,000)	(579,000)
Additional loss due to settlement	0	0	1,188,000
Total pension cost (benefit)	25,000	(176,000)	609,000
Net loss (gain) recognized in other comprehensive income	986,000	2,798,000	(1,453,000)
Total recognized in net periodic benefit cost and other comprehensive loss (before tax)	$ 1,011,000	$ 2,622,000	$ (2,032,000)

Retirement Plans - Weighted Ave

Retirement Plans - Weighted Average Assumptions Used to Determine Benefit Obligations and Net Periodic Pension Cost (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Discount rate on benefit obligation	2.39%	3.13%	4.14%
Long-term rate of return on plan assets	4.44%	4.96%	7.00%
Rate of compensation increase	0.00%	0.00%	0.00%
Discount rate on benefit obligation	3.13%	4.14%	3.51%
Long-term rate of return on plan assets	4.96%	7.00%	7.00%
Rate of compensation increase	0.00%	0.00%	0.00%

Retirement Plans - Schedule of

Retirement Plans - Schedule of Pension Plan Asset Allocation and Target Allocation by Asset Category (Detail)	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Year-end	100.00%	100.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Year-end	20.00%	20.00%
Equity Securities [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	0.00%
Equity Securities [Member] \| Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	30.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Year-end	80.00%	80.00%
Debt Securities [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	70.00%
Debt Securities [Member] \| Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%

Retirement Plans - Summary of I

Retirement Plans - Summary of Investments Measured at Fair Value Based on NAV Per Share (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 15,257,000	$ 15,183,000	$ 15,572,000
Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Frequency (if currently eligible)	Daily	Daily
Redemption Notice Period	1 day	1 day
Common/Collective Trust Funds [Member] \| Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 15,257,000	$ 15,183,000

Retirement Plans - Summary of E

Retirement Plans - Summary of Expected Benefit Payments (Detail)	Dec. 31, 2020USD ($)
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]
2021	$ 1,661,000
2022	275,000
2023	316,000
2024	355,000
2025	419,000
2026 through 2030	2,970,000
Total	$ 5,996,000

Equity Incentive Plan - Additio

Equity Incentive Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation - Civista BOD	$ 617,000	$ 531,000	$ 428,000
Expected future compensation expense	$ 651,000
Weighted average remaining life of grants related to unvested awards not yet recognized	2 years 3 months 18 days
Civista Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted common shares granted	14,266	8,946	7,071
Share based compensation - Civista BOD	$ 196,000	$ 196,000	$ 165,000
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares vesting service period	3 years
2014 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares under stock option plan authorized for issuance				375,000
Number of shares available for grant under stock option plan	198,756
Options granted	0	0
Share based compensation expense	$ 421,000	$ 335,000	263,000
Director retainer fees	196,000	$ 196,000	$ 165,000
Expected future compensation expense	$ 651,000
Weighted average remaining life of grants related to unvested awards not yet recognized	2 years 3 months 18 days

Equity Incentive Plan - Summary

Equity Incentive Plan - Summary of Company's Restricted Stock (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)$ / sharesshares
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	54,274
Expected future remaining compensation expense \| $	$ 651,000
Expected future compensation expense, restricted shares remaining vesting period	2 years 3 months 18 days
Restricted Shares Awarded on January 15, 2016 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	2,056
Date of Award	Jan. 15, 2016
Expected future compensation expense, restricted shares remaining vesting period	0 years
Restricted Shares Awarded on March 20, 2017 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	2,388
Date of Award	Mar. 20, 2017
Expected future remaining compensation expense \| $	$ 24,000
Expected future compensation expense, restricted shares remaining vesting period	1 year
Restricted Shares Awarded on April 10, 2018 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	2,643
Date of Award	Apr. 10, 2018
Expected future compensation expense, restricted shares remaining vesting period	0 years
Restricted Shares Awarded on April 10, 2018 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	4,670
Date of Award	Apr. 10, 2018
Expected future remaining compensation expense \| $	$ 62,000
Expected future compensation expense, restricted shares remaining vesting period	2 years
Restricted Shares Awarded on March 14, 2019 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	6,796
Date of Award	Mar. 14, 2019
Expected future remaining compensation expense \| $	$ 63,000
Expected future compensation expense, restricted shares remaining vesting period	1 year
Restricted Shares Awarded on March 14, 2019 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	8,742
Date of Award	Mar. 14, 2019
Expected future remaining compensation expense \| $	$ 119,000
Expected future compensation expense, restricted shares remaining vesting period	3 years
Restricted Shares Awarded on March 14, 2020 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	13,997
Date of Award	Mar. 14, 2020
Expected future remaining compensation expense \| $	$ 186,000
Expected future compensation expense, restricted shares remaining vesting period	2 years
Restricted Shares Awarded on March 14, 2020 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	12,982
Date of Award	Mar. 14, 2020
Expected future remaining compensation expense \| $	$ 197,000
Expected future compensation expense, restricted shares remaining vesting period	4 years
Restricted Stock [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Nonvested at beginning of period	44,027
Number of Restricted Shares, Granted	26,979
Number of Restricted Shares, Vested	(16,732)
Number of Restricted Shares, Forfeited	0
Number of Restricted Shares, Nonvested at end of period	54,274
Weighted Average Grant Date Fair Value, Nonvested at beginning of period \| $ / shares	$ 20.48
Weighted Average Grant Date Fair Value, Granted \| $ / shares	21.26
Weighted Average Grant Date Fair Value, Vested \| $ / shares	20.36
Weighted Average Grant Date Fair Value, Forfeited \| $ / shares	0
Weighted Average Grant Date Fair Value, Nonvested at end of period \| $ / shares	$ 20.90

Fair Value Measurement - Assets

Fair Value Measurement - Assets and Liabilities Measured at Fair Value (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$ 363,464,000	$ 358,499,000
Equity securities	886,000	1,191,000
(Level 2) [Member] \| Assets Measured at Fair Value on a Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	363,464,000	358,499,000
Equity securities	886,000	1,191,000
(Level 2) [Member] \| Assets Measured at Fair Value on a Recurring Basis [Member] \| Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Swap asset	21,700,000	8,918,000
Swap liability	21,764,000	8,918,000
(Level 2) [Member] \| Assets Measured at Fair Value on a Recurring Basis [Member] \| U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	21,693,000	19,601,000
(Level 2) [Member] \| Assets Measured at Fair Value on a Recurring Basis [Member] \| Obligations of States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	229,012,000	206,034,000
(Level 2) [Member] \| Assets Measured at Fair Value on a Recurring Basis [Member] \| Mortgage-backed Securities in Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	112,759,000	132,864,000
(Level 3) [Member] \| Assets Measured at Fair Value on a Nonrecurring Basis [Member] \| Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,000	$ 1,000
(Level 3) [Member] \| Assets Measured at Fair Value on a Nonrecurring Basis [Member] \| Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 31,000

Fair Value Measurement - Quanti

Fair Value Measurement - Quantitative Information about Level 3 Fair Value Measurements (Detail) - Assets Measured at Fair Value on a Nonrecurring Basis [Member] - (Level 3) [Member]	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Impaired Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 1,000	$ 1,000
Valuation Technique [Extensible List]	civb:AppraisalOfCollateralMember	civb:AppraisalOfCollateralMember
Impaired Loans [Member] \| Measurement Input, Appraised Value [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable Input		30
Impaired Loans [Member] \| Measurement Input, Appraised Value [Member] \| Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable Input	0
Impaired Loans [Member] \| Measurement Input, Appraised Value [Member] \| Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable Input	30
Impaired Loans [Member] \| Measurement Input, Appraised Value [Member] \| Weighted Average [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable Input	19	30
Impaired Loans [Member] \| Measurement Input Holding Period [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans, Term	23 months	22 months
Impaired Loans [Member] \| Measurement Input Holding Period [Member] \| Weighted Average [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans, Term	23 months	22 months
Other Real Estate Owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 31,000
Valuation Technique [Extensible List]	civb:AppraisalOfCollateralMember
Other Real Estate Owned [Member] \| Measurement Input, Appraised Value [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable Input	10
Other Real Estate Owned [Member] \| Measurement Input, Appraised Value [Member] \| Weighted Average [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable Input	10

Fair Value Measurement - Carryi

Fair Value Measurement - Carrying Amount and Fair Value of Financial Instruments Carried at Amortized Cost (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financial Assets:
Cash and due from financial institutions	$ 128,222,000	$ 48,535,000
Other securities	20,537,000	20,280,000
Loans, net of allowance for loan losses	2,032,474,000	1,694,203,000
Bank owned life insurance	45,976,000	44,999,000
Accrued interest receivable	9,421,000	7,093,000
Financial Liabilities:
Time deposits	286,838,000
Short-term FHLB advances	125,000,000	101,500,000
Long-term FHLB advances	125,000,000	125,000,000
Securities sold under agreement to repurchase	28,914,000	18,674,000	$ 22,199,000
Carrying Amount [Member]
Financial Assets:
Cash and due from financial institutions	139,522,000	48,535,000
Other securities	20,537,000	20,280,000
Loans, held for sale	7,001,000	2,285,000
Loans, net of allowance for loan losses	2,032,474,000	1,694,203,000
Bank owned life insurance	45,976,000	44,999,000
Accrued interest receivable	9,421,000	7,093,000
Financial Liabilities:
Nonmaturing deposits	1,902,560,000	1,402,924,000
Time deposits	286,838,000	275,840,000
Short-term FHLB advances		101,500,000
Long-term FHLB advances	125,000,000	125,000,000
Securities sold under agreement to repurchase	28,914,000	18,674,000
Subordinated debentures	29,427,000	29,427,000
Accrued interest payable	204,000	277,000
Total Fair Value [Member]
Financial Assets:
Cash and due from financial institutions	139,522,000	48,535,000
Other securities	20,537,000	20,280,000
Loans, held for sale	7,141,000	2,331,000
Loans, net of allowance for loan losses	2,063,249,000	1,713,863,000
Bank owned life insurance	45,976,000	44,999,000
Accrued interest receivable	9,421,000	7,093,000
Financial Liabilities:
Nonmaturing deposits	1,902,560,000	1,402,924,000
Time deposits	288,298,000	276,616,000
Short-term FHLB advances		101,500,000
Long-term FHLB advances	130,942,000	123,893,000
Securities sold under agreement to repurchase	28,914,000	18,674,000
Subordinated debentures	31,479,000	34,452,000
Accrued interest payable	204,000	277,000
(Level 1) [Member]
Financial Assets:
Cash and due from financial institutions	139,522,000	48,535,000
Other securities	20,537,000	20,280,000
Loans, held for sale	7,141,000	2,331,000
Bank owned life insurance	45,976,000	44,999,000
Accrued interest receivable	9,421,000	7,093,000
Financial Liabilities:
Nonmaturing deposits	1,902,560,000	1,402,924,000
Short-term FHLB advances		101,500,000
Securities sold under agreement to repurchase	28,914,000	18,674,000
Accrued interest payable	204,000	277,000
(Level 3) [Member]
Financial Assets:
Loans, net of allowance for loan losses	2,063,249,000	1,713,863,000
Financial Liabilities:
Time deposits	288,298,000	276,616,000
Long-term FHLB advances	130,942,000	123,893,000
Subordinated debentures	$ 31,479,000	$ 34,452,000

Commitments, Contingencies an_3

Commitments, Contingencies and Off-Balance-Sheet Risk - Contractual Amounts of Financial Instruments with Off-Balance-Sheet Risk (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	$ 39,095,000	$ 15,784,000
Variable Rate	470,557,000	434,578,000
Lines of Credit and Construction Loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	38,474,000	15,155,000
Variable Rate	427,864,000	396,516,000
Overdraft Protection [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	6,000	5,000
Variable Rate	41,707,000	37,286,000
Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	615,000	624,000
Variable Rate	$ 986,000	$ 776,000

Commitments, Contingencies an_4

Commitments, Contingencies and Off-Balance-Sheet Risk - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Maximum period of commitments to make loans	1 year
Maximum time period of maturities	30 years
Reserve balance under Federal Reserve Board requirements	$ 0	$ 7,127,000
Minimum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Range of fixed interest rate loan commitments	3.50%	4.50%
Maximum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Range of fixed interest rate loan commitments	8.00%	8.00%

Capital Requirements and Rest_3

Capital Requirements and Restriction on Retained Earnings - Actual Capital Levels and Minimum Required Capital Levels (Detail)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Consolidated [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Risk Based Capital, Actual, Amount	$ 307,504,000	$ 285,268,000
Tier I Risk Based Capital, Actual, Amount	283,459,000	270,501,000
CET1 Risk Based Capital, Actual, Amount	254,032,000	241,074,000
Leverage, Actual, Amount	$ 283,459,000	$ 270,501,000
Total Risk Based Capital, Actual, Ratio	16	16.1
Tier I Risk Based Capital, Actual, Ratio	14.7	15.3
CET1 Risk Based Capital, Actual, Ratio	13.2	13.6
Leverage, Actual, Ratio	10.8	12.3
Total Risk Based Capital , For Capital Adequacy Purposes, Amount	$ 153,810,000	$ 141,506,000
Tier I Risk Based Capital, For Capital Adequacy Purposes, Amount	115,358,000	106,129,000
CET1 Risk Based Capital, For Capital Adequacy Purposes, Amount	86,518,000	79,597,000
Leverage, For Capital Adequacy Purposes, Amount	$ 105,279,000	$ 87,652,000
Total Risk Based Capital , For Capital Adequacy Purposes, Ratio	8	8
Tier I Risk Based Capital, For Capital Adequacy Purposes, Ratio	6	6
CET1 Risk Based Capital, For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Leverage, For Capital Adequacy Purposes, Ratio	4	4
Civista [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Risk Based Capital, Actual, Amount	$ 277,429,000	$ 250,920,000
Tier I Risk Based Capital, Actual, Amount	252,304,000	235,094,000
CET1 Risk Based Capital, Actual, Amount	241,891,000	224,653,000
Leverage, Actual, Amount	$ 252,304,000	$ 235,094,000
Total Risk Based Capital, Actual, Ratio	14.4	14.2
Tier I Risk Based Capital, Actual, Ratio	13.1	13.3
CET1 Risk Based Capital, Actual, Ratio	12.6	12.7
Leverage, Actual, Ratio	9.6	10.8
Total Risk Based Capital , For Capital Adequacy Purposes, Amount	$ 153,765,000	$ 141,445,000
Tier I Risk Based Capital, For Capital Adequacy Purposes, Amount	115,323,000	106,084,000
CET1 Risk Based Capital, For Capital Adequacy Purposes, Amount	86,493,000	79,563,000
Leverage, For Capital Adequacy Purposes, Amount	$ 105,029,000	$ 87,362,000
Total Risk Based Capital , For Capital Adequacy Purposes, Ratio	8	8
Tier I Risk Based Capital, For Capital Adequacy Purposes, Ratio	6	6
CET1 Risk Based Capital, For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Leverage, For Capital Adequacy Purposes, Ratio	4	4
Total Risk Based Capital , To Be Well Capitalized Under Prompt Corrective Action Purposes, Amount	$ 192,206,000	$ 176,807,000
Tier I Risk Based Capital, To Be Well Capitalized Under Prompt Corrective Action Purposes, Amount	153,765,000	141,445,000
CET1 Risk Based Capital, To Be Well Capitalized Under Prompt Corrective Action Purposes, Amount	124,934,000	114,924,000
Leverage, To Be Well Capitalized Under Prompt Corrective Action Purposes, Amount	$ 131,286,000	$ 109,203,000
Total Risk Based Capital , To Be Well Capitalized Under Prompt Corrective Action Purposes, Ratio	10	10
Tier I Risk Based Capital, To Be Well Capitalized Under Prompt Corrective Action Purposes, Ratio	8	8
CET1 Risk Based Capital, To Be Well Capitalized Under Prompt Corrective Action Purposes, Ratio	6.50%	6.50%
Leverage, To Be Well Capitalized Under Prompt Corrective Action Purposes, Ratio	5	5

Capital Requirements and Rest_4

Capital Requirements and Restriction on Retained Earnings - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)
Capital Requirements And Restriction On Retained Earnings [Abstract]
Net profits available to pay dividends to CBI	$ 53,484,000

Parent Company Only Condensed_3

Parent Company Only Condensed Financial Information - Schedule of Condensed Balance Sheets (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Equity securities	$ 886,000	$ 1,191,000
Other assets	14,431,000	15,527,000
Total assets	2,762,918,000	2,309,557,000
LIABILITIES
Subordinated debentures	29,427,000	29,427,000
Total liabilities	2,412,810,000	1,979,431,000
SHAREHOLDERS’ EQUITY
Common stock	277,039,000	276,422,000
Accumulated earnings	93,048,000	67,974,000
Treasury Stock	(34,598,000)	(21,144,000)
Accumulated other comprehensive income	14,619,000	6,874,000
Total shareholders’ equity	350,108,000	330,126,000	$ 298,898,000	$ 184,461,000
Total liabilities and shareholders’ equity	2,762,918,000	2,309,557,000
CBI[Member]
ASSETS
Cash	19,446,000	24,089,000	$ 19,678,000	$ 29,908,000
Equity securities	886,000	1,191,000
Investment in bank subsidiary	344,948,000	319,714,000
Investment in nonbank subsidiaries	16,017,000	15,181,000
Other assets	1,575,000	1,683,000
Total assets	382,872,000	361,858,000
LIABILITIES
Deferred income taxes and other liabilities	3,337,000	2,305,000
Subordinated debentures	29,427,000	29,427,000
Total liabilities	32,764,000	31,732,000
SHAREHOLDERS’ EQUITY
Common stock	277,039,000	276,422,000
Accumulated earnings	93,048,000	67,974,000
Treasury Stock	(34,598,000)	(21,144,000)
Accumulated other comprehensive income	14,619,000	6,874,000
Total shareholders’ equity	350,108,000	330,126,000
Total liabilities and shareholders’ equity	$ 382,872,000	$ 361,858,000

Parent Company Only Condensed_4

Parent Company Only Condensed Financial Information - Schedule of Condensed Statements of Operations (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Financial Statements Captions [Line Items]
Interest expense									$ (10,138,000)	$ (12,954,000)	$ (7,570,000)
Income tax expense									(4,940,000)	(5,683,000)	(2,640,000)
Net income	$ 10,173,000	$ 7,682,000	$ 6,504,000	$ 7,833,000	$ 7,841,000	$ 7,708,000	$ 8,660,000	$ 9,669,000	32,192,000	33,878,000	14,139,000
Comprehensive income									39,937,000	42,204,000	14,089,000
CBI[Member]
Condensed Financial Statements Captions [Line Items]
Dividends from bank subsidiaries									15,300,000	13,300,000	10,000,000
Dividends from non-bank subsidiaries									440,000
Interest expense									(945,000)	(1,423,000)	(1,320,000)
Pension expense									(25,000)	176,000	199,000
Acquisition expense											(10,738,000)
Other expense, net									(1,241,000)	(1,107,000)	(1,740,000)
Income (loss) before equity in undistributed net earnings of subsidiaries									13,529,000	10,946,000	(3,599,000)
Income tax expense									475,000	494,000	1,751,000
Equity in undistributed net earnings of subsidiaries									18,188,000	22,438,000	15,987,000
Net income									32,192,000	33,878,000	14,139,000
Comprehensive income									$ 39,937,000	$ 42,204,000	$ 14,089,000

Parent Company Only Condensed_5

Parent Company Only Condensed Financial Information - Schedule of Condensed Statements of Cash Flows (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating activities:
Net income	$ 32,192,000	$ 33,878,000	$ 14,139,000
Adjustment to reconcile net income to net cash from operating activities:
Net cash from operating activities	32,207,000	39,328,000	19,625,000
Cash flows used for investing activities:
Proceeds from sale of premises and equipment	12,000	2,000	1,190,000
Acquisition, net of cash acquired			143,797,000
Net cash used for investing activities	(340,022,000)	(150,311,000)	(33,786,000)
Cash flows from financing activities:
Payment to repurchase series B preferred stock		(402,000)
Net cash from financing activities	398,802,000	116,739,000	16,421,000
CBI[Member]
Operating activities:
Net income	32,192,000	33,878,000	14,139,000
Adjustment to reconcile net income to net cash from operating activities:
Change in other assets and other liabilities	1,925,000	4,437,000	794,000
Gain on sale of fixed assets			(110,000)
Equity in undistributed net earnings of subsidiaries	(18,188,000)	(22,438,000)	(15,987,000)
Net cash from operating activities	15,929,000	15,877,000	(1,164,000)
Cash flows used for investing activities:
Proceeds from sale of premises and equipment			899,000
Disposal of investment in subsidiary		41,000
Acquisition, net of cash acquired			(5,216,000)
Net cash used for investing activities		41,000	(4,317,000)
Cash flows from financing activities:
Cash paid on fractional shares on preferred stock conversion to common stock		(2,000)
Purchase of treasury stock	(13,454,000)	(3,909,000)
Payment to repurchase series B preferred stock		(402,000)
Cash dividends paid	(7,118,000)	(7,194,000)	(4,749,000)
Net cash from financing activities	(20,572,000)	(11,507,000)	(4,749,000)
Net change in cash and cash equivalents	(4,643,000)	4,411,000	(10,230,000)
Cash and cash equivalents at beginning of year	24,089,000	19,678,000	29,908,000
Cash and cash equivalents at end of year	$ 19,446,000	$ 24,089,000	$ 19,678,000

Preferred Shares - Additional i

Preferred Shares - Additional information (Detail) - USD ($)	Feb. 15, 2014	Dec. 19, 2013
Depositary Shares [Member]
Preferred Stock [Line Items]
Newly issued shares		1,000,000
Percentage of ownership Interest		6.50%
Share issued price per share		$ 25
Gross proceeds from public offering		$ 25,000,000
Series B Preferred Stock [Member]
Preferred Stock [Line Items]
Preferred shares, liquidation preference		$ 1,000
Dividend on preferred stock		6.50%
Series A Preferred Stock [Member]
Preferred Stock [Line Items]
Aggregate purchase price of Preferred stock	$ 22,857,000
Preferred stock redemption date	Feb. 15, 2014

Earnings per Common Share - Com

Earnings per Common Share - Computation of Basic and Diluted Earnings per Common Share (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Basic
Net income	$ 10,173,000	$ 7,682,000	$ 6,504,000	$ 7,833,000	$ 7,841,000	$ 7,708,000	$ 8,660,000	$ 9,669,000	$ 32,192,000	$ 33,878,000	$ 14,139,000
Preferred stock dividends										647,000	959,000
Net income available to common shareholders									$ 32,192,000	$ 33,231,000	$ 13,180,000
Weighted average common shares outstanding for earnings per common share basic									16,129,875	15,652,881	11,971,786
Basic earnings per share	$ 0.64	$ 0.48	$ 0.41	$ 0.47	$ 0.48	$ 0.48	$ 0.55	$ 0.61	$ 2	$ 2.12	$ 1.10
Diluted
Net income available to common shareholders—basic									$ 32,192,000	$ 33,231,000	$ 13,180,000
Preferred stock dividends										647,000	959,000
Net income available to common shareholders—diluted									$ 32,192,000	$ 33,878,000	$ 14,139,000
Weighted average common shares outstanding for earnings per common share basic									16,129,875	15,652,881	11,971,786
Add: dilutive effects of convertible preferred shares										1,198,859	1,883,921
Average shares and dilutive potential common shares outstanding—diluted									16,129,875	16,851,740	13,855,707
Diluted earnings per share	$ 0.64	$ 0.48	$ 0.41	$ 0.47	$ 0.47	$ 0.46	$ 0.51	$ 0.57	$ 2	$ 2.01	$ 1.02

Quarterly Financial Data - Sche

Quarterly Financial Data - Schedule of Quarterly Financial Data (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Interest Income	$ 25,721,000	$ 24,558,000	$ 24,584,000	$ 25,002,000	$ 24,521,000	$ 24,023,000	$ 24,926,000	$ 24,584,000	$ 99,865,000	$ 98,054,000	$ 73,677,000
Net Interest Income	23,531,000	22,006,000	22,075,000	22,115,000	21,222,000	20,418,000	21,741,000	21,719,000	89,727,000	85,100,000	66,107,000
Net Income	$ 10,173,000	$ 7,682,000	$ 6,504,000	$ 7,833,000	$ 7,841,000	$ 7,708,000	$ 8,660,000	$ 9,669,000	$ 32,192,000	$ 33,878,000	$ 14,139,000
Basic Earnings per Common Share	$ 0.64	$ 0.48	$ 0.41	$ 0.47	$ 0.48	$ 0.48	$ 0.55	$ 0.61	$ 2	$ 2.12	$ 1.10
Diluted Earnings per Common Share	$ 0.64	$ 0.48	$ 0.41	$ 0.47	$ 0.47	$ 0.46	$ 0.51	$ 0.57	$ 2	$ 2.01	$ 1.02

Derivatives - Summary of Intere

Derivatives - Summary of Interest Rate Swap Transactions (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Derivatives Fair Value [Line Items]
Net Exposure, Notional Amount	$ 0	$ 0
Net Exposure, Fair value	(64,000)	0
Derivative Financial Instruments, Assets [Member] \| Other Assets [Member]
Derivatives Fair Value [Line Items]
Net Exposure, Notional Amount	$ 244,748,000	$ 151,648,000
Weighted Average Rate Received/(Paid)	4.48%	5.04%
Net Exposure, Fair value	$ 21,700,000	$ 8,918,000
Derivative Financial Instruments, Liabilities [Member] \| Accrued Expenses and Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Net Exposure, Notional Amount	$ (244,748,000)	$ (151,648,000)
Weighted Average Rate Received/(Paid)	4.48%	5.04%
Net Exposure, Fair value	$ (21,764,000)	$ (8,918,000)

Derivatives - Additional Inform

Derivatives - Additional Information (Detail) - USD ($)	12 Months Ended
Derivatives - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivatives Fair Value [Line Items]
Swap fees	$ 1,459,000	$ 516,000	$ 621,000
Collateral Pledged [Member] \| Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Cash and securities at fair value pledged for collateral	11,705,000	$ 14,032,000
Cash and Cash Equivalents [Member] \| Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Cash and securities at fair value pledged for collateral	$ 11,300,000

Qualified Affordable Housing _2

Qualified Affordable Housing Project Investments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments In Affordable Housing Projects [Abstract]
Investments in qualified affordable housing projects included in other assets	$ 5,967,000	$ 5,154,000
Unfunded commitments related to the investments in qualified affordable housing projects	5,944,000	5,417,000
Recognized amortization expense	661,000	570,000	$ 473,000
Recognized tax credits and other benefits from its investments in affordable housing tax credits	1,186,000	995,000	903,000
Impairment losses related to its investment in qualified affordable housing projects	$ 0	$ 0	$ 0

Revenue Recognition - Summary o

Revenue Recognition - Summary of Noninterest Income Segregated By Revenue Streams In-scope and Out-of-scope of Topic 606 (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Noninterest income
Service charges	$ 5,288,000	$ 6,395,000	$ 5,208,000
ATM/Interchange fees	4,472,000	4,056,000	2,794,000
Wealth management fees	3,981,000	3,670,000	3,669,000
Tax refund processing fees	2,375,000	2,750,000	2,750,000
Other	831,000	911,000	892,000
Noninterest Income (in-scope of Topic 606)	16,947,000	17,782,000	15,313,000
Noninterest Income (out-of-scope of Topic 606)	11,235,000	4,661,000	2,818,000
Total noninterest income	$ 28,182,000	$ 22,443,000	$ 18,131,000

Leases - Summary of Balance She

Leases - Summary of Balance Sheet Information Related to Operating Leases (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Assets:
Operating lease	$ 2,678,000	$ 3,273,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsMember	us-gaap:OtherAssetsMember
Liabilities:
Operating lease	$ 2,678,000	$ 3,273,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	civb:AccruedExpensesAndOtherLiabilitiesMember	civb:AccruedExpensesAndOtherLiabilitiesMember

Leases - Summary of Cost Compon

Leases - Summary of Cost Components of Operating Leases (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lease cost
Operating lease cost	$ 499,000	$ 429,000
Short-term lease cost	304,000	262,000
Sublease income	(26,000)	(49,000)
Total lease cost	$ 777,000	$ 642,000

Leases - Summary of Maturities

Leases - Summary of Maturities of Operating and Finance Lease Liabilities (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2021	$ 432,000
2022	420,000
2023	414,000
2024	406,000
2025	308,000
Thereafter	985,000
Total	2,965,000
Less: Imputed Interest	287,000
Present value of lease liabilities	$ 2,678,000	$ 3,273,000

Leases - Summary of Weighted Av

Leases - Summary of Weighted Average Remaining Lease Terms And Discount Rates For Operating Leases (Detail)	Dec. 31, 2020
Leases [Abstract]
Weighted-average remaining lease term - operating leases (years)	6 years 7 months 6 days
Weighted-average discount rate - operating leases	2.85%

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - Paycheck Protection Program Loans [Member] - Subsequent Event [Member]	Feb. 22, 2021USD ($)Loan	Jan. 19, 2021USD ($)Employee
Subsequent Event [Line Items]
Additional amount of loan funded		$ 284,500,000,000
Second draw loan eligibility requirements description		Additional Second Draw eligibility requirements are: (1) entities must have no more than 300 employees, (2) suffered a 25% of more reduction in gross revenues between comparable quarters in 2019 and 2020, (3) some entities previously excluded are eligible for this round, such as local TV, newspaper, and radio, and (4) loan size limited to 2.5 times average monthly payroll with a maximum allowable amount of $2 million.
Percentage of minimum reduction in gross revenues between comparable quarters		25.00%
Number of times loan size limited to average monthly payroll		2.5
Maximum allowable amount under second draw loans		$ 2,000,000
Number of loans approved \| Loan	857
Total loans approved	$ 99,357,000
Maximum [Member]
Subsequent Event [Line Items]
Eligible entities based number of employees \| Employee		300