Adams Resources & Energy (AE) 10-K5 Mar 212020 FY Annual reportFinancial data

Company Profile

Cover Page

Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Dec. 31, 2020	Mar. 01, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-7908
Entity Registrant Name	ADAMS RESOURCES & ENERGY, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	74-1753147
Entity Address, Address Line One	17 SOUTH BRIAR HOLLOW LANE
Entity Address, Address Line Two	SUITE 100
Entity Address, City or Town	HOUSTON
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77027
City Area Code	713
Local Phone Number	881-3600
Title of 12(b) Security	Common Stock, $0.10 Par Value
Trading Symbol	AE
Security Exchange Name	NYSEAMER
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 58,294,245
Entity Common Stock, Shares Outstanding		4,251,015
Documents Incorporated by Reference	Portions of the Proxy Statement for the Annual Meeting of Shareholders to be held May 12, 2021 are incorporated by reference into Part III of this annual report on Form 10-K.
Entity Central Index Key	0000002178
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 39,293	$ 112,994
Restricted cash	12,772	9,261
Accounts receivable, net of allowance for doubtful accounts of $114 and $141, respectively	99,799	94,534
Inventory	19,336	26,407
Derivative assets	61	0
Income tax receivable	13,288	2,569
Prepayments and other current assets	2,964	1,559
Total current assets	187,513	247,324
Property and equipment, net	94,134	69,046
Operating lease right-of-use assets, net	8,051	9,576
Intangible assets, net	4,106	1,597
Other assets	2,383	3,299
Total assets	296,187	330,842
Current liabilities:
Accounts payable	85,991	147,851
Accounts payable – related party	0	5
Derivative liabilities	52	0
Current portion of finance lease obligations	4,112	2,167
Operating lease liabilities	2,050	2,252
Other current liabilities	22,343	7,302
Total current liabilities	114,548	159,577
Other long-term liabilities:
Asset retirement obligations	2,308	1,573
Total long-term lease obligation	11,507	4,376
Operating lease liabilities	6,000	7,323
Deferred taxes and other liabilities	12,732	6,352
Total liabilities	147,095	179,201
Commitments and contingencies (Note 17)
Shareholders’ equity:
Preferred stock – $1.00 par value, 960,000 shares authorized, none outstanding	0	0
Common stock – $0.10 par value, 7,500,000 shares authorized, 4,243,716 and 4,235,533 shares outstanding, respectively	423	423
Contributed capital	13,340	12,778
Retained earnings	135,329	138,440
Total shareholders’ equity	149,092	151,641
Total liabilities and shareholders’ equity	$ 296,187	$ 330,842

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 114	$ 141
Preferred stock - par value (in dollars per share)	$ 1	$ 1
Preferred stock - shares authorized (in shares)	960,000	960,000
Preferred stock - outstanding (in shares)	0	0
Common stock - par value (in dollars per share)	$ 0.10	$ 0.10
Common stock - shares authorized (in shares)	7,500,000	7,500,000
Common stock - shares outstanding (in shares)	4,243,716	4,235,533
Operating lease right-of-use assets, net	$ 8,051	$ 9,576
Operating lease liabilities	2,050	2,252
Operating lease liabilities	$ 6,000	$ 7,323

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Total revenues	$ 1,022,422	$ 1,811,247	$ 1,750,213
Costs and expenses:
General and administrative	10,284	10,198	8,937
Depreciation and amortization	18,573	16,641	10,654
Total costs and expenses	1,028,169	1,803,447	1,748,805
Operating (losses) earnings	(5,747)	7,800	1,408
Other income (expense):
Gain on dissolution of investment	0	573	0
Interest income	656	2,766	2,155
Interest expense	(444)	(636)	(109)
Total other income (expense), net	212	2,703	2,046
(Losses) earnings before income taxes	(5,535)	10,503	3,454
Income tax (provision) benefit:
Current	12,919	(211)	427
Deferred	(6,389)	(2,085)	(936)
Income tax benefit (provision)	6,530	(2,296)	(509)
Net earnings	$ 995	$ 8,207	$ 2,945
Earnings per share:
Basic net earnings per share (in dollars per share)	$ 0.23	$ 1.94	$ 0.70
Diluted net earnings per common share (in dollars per share)	0.23	1.94	0.70
Dividends per common share (in dollars per share)	$ 0.96	$ 0.94	$ 0.88
Marketing
Revenues:
Total revenues	$ 950,426	$ 1,748,056	$ 1,694,437
Costs and expenses:
Cost and expenses	940,031	1,723,216	1,681,045
Transportation
Revenues:
Total revenues	71,724	63,191	55,776
Costs and expenses:
Cost and expenses	58,888	53,392	48,169
Pipeline and storage
Revenues:
Total revenues	272	0	0
Costs and expenses:
Cost and expenses	$ 393	$ 0	$ 0

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating activities:
Net (losses) earnings	$ 995	$ 8,207	$ 2,945
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	18,573	16,641	10,654
Gains on sales of property	(1,859)	(1,400)	(1,240)
Provision for doubtful accounts	(27)	(12)	(150)
Stock-based compensation expense	643	478	255
Deferred income taxes	6,389	2,085	936
Net change in fair value contracts	(9)	23	(2)
Gain on dissolution of AREC	0	(573)	0
Changes in assets and liabilities:
Accounts receivable	(5,162)	(8,373)	36,350
Accounts receivable/payable, affiliates	(5)	(24)	24
Inventories	4,751	(3,628)	(10,587)
Income tax receivable	(10,719)	(165)	(1,087)
Prepayments and other current assets	(1,401)	(2)	(293)
Accounts payable	(61,116)	31,795	(10,252)
Accrued liabilities	5,052	1,154	1,744
Other	(104)	693	1,717
Net cash (used in) provided by operating activities	(43,999)	46,899	31,014
Investing activities:
Property and equipment additions	(5,008)	(35,743)	(11,731)
Acquisitions	(20,200)	(5,624)	(10,272)
Proceeds from property sales	4,515	3,680	2,038
Proceeds from dissolution of AREC	0	998	0
Insurance and state collateral (deposits) refunds	1,030	652	830
Net cash used in investing activities	(19,663)	(36,037)	(19,135)
Financing activities:
Principal repayments of finance lease obligations	(2,336)	(1,697)	(495)
Payment of contingent consideration liability	(111)	0	0
Dividends paid on common stock	(4,081)	(3,976)	(3,711)
Net cash used in financing activities	(6,528)	(5,673)	(4,206)
(Decrease) Increase in cash and cash equivalents, including restricted cash	(70,190)	5,189	7,673
Cash and cash equivalents, including restricted cash, at beginning of period	122,255	117,066	109,393
Cash and cash equivalents, including restricted cash, at end of period	$ 52,065	$ 122,255	$ 117,066

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Contributed Capital	Retained Earnings
Beginning balance at Dec. 31, 2017	$ 147,119	$ 422	$ 11,693	$ 135,004
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	2,945			2,945
Stock-based compensation expense	255		255
Dividends declared:
Common stock	(3,711)			(3,711)
Awards under LTIP	(10)			(10)
Ending balance at Dec. 31, 2018	146,598	422	11,948	134,228
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	8,207			8,207
Stock-based compensation expense	478		478
Issuance of common shares for acquisition	392	1	391
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(39)		(39)
Dividends declared:
Common stock	(3,976)			(3,976)
Awards under LTIP	(19)			(19)
Ending balance at Dec. 31, 2019	151,641	423	12,778	138,440
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	995			995
Stock-based compensation expense	643		643
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(81)		(81)
Dividends declared:
Common stock	(4,070)			(4,070)
Awards under LTIP	(36)			(36)
Ending balance at Dec. 31, 2020	$ 149,092	$ 423	$ 13,340	$ 135,329

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends per common share (in dollars per share)	$ 0.96	$ 0.94	$ 0.88
Awards under LTIP (in dollars per share)	$ 0.96	$ 0.94	$ 0.44

Organization and Basis of Prese

Organization and Basis of Presentation	12 Months Ended
Organization and Basis of Presentation	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation Organization Adams Resources & Energy, Inc. is a publicly traded Delaware corporation organized in 1973, the common shares of which are listed on the NYSE American LLC under the ticker symbol “AE”. Through our subsidiaries, we are primarily engaged in crude oil marketing, transportation, terminalling and storage in various crude oil and natural gas basins in the lower 48 states of the United States (“U.S.”). We also conduct tank truck transportation of liquid chemicals, pressurized gases, asphalt and dry bulk primarily in the lower 48 states of the U.S. with deliveries into Canada and Mexico, and with fifteen terminals across the U.S. Unless the context requires otherwise, references to “we,” “us,” “our” or the “Company” are intended to mean the business and operations of Adams Resources & Energy, Inc. and its consolidated subsidiaries. We operate and report in three business segments: (i) crude oil marketing, transportation and storage; (ii) tank truck transportation of liquid chemicals, pressurized gases, asphalt and dry bulk; and (iii) beginning in the fourth quarter of 2020, pipeline transportation, terminalling and storage of crude oil, which includes the pipeline and related terminal facility assets we acquired in October 2020 (see Note 6 for further information regarding our acquisition). See Note 9 for further information regarding our business segments. The consolidated financial statements and the accompanying notes are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and the rules of the U.S. Securities and Exchange Commission (“SEC”). All significant intercompany transactions and balances have been eliminated in consolidation. Use of Estimates The preparation of our financial statements in conformity with GAAP requires management to use estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. We base our estimates and judgments on historical experience and on various other assumptions and information we believe to be reasonable under the circumstances. Estimates and assumptions about future events and their effects cannot be perceived with certainty and, accordingly, these estimates may change as new events occur, as more experience is acquired, as additional information is obtained and as the operating environment changes. While we believe the estimates and assumptions used in the preparation of the consolidated financial statements are appropriate, actual results could differ from those estimates.

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	Summary of Significant Accounting Policies We adhere to the following significant accounting policies in the preparation of our consolidated financial statements. Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable associated with crude oil marketing activities comprise approximately 90 percent of our total receivables, and industry practice requires payment for these sales to occur within 20 days of the end of the month following a transaction. Our customer makeup, credit policies and the relatively short duration of receivables mitigate the uncertainty typically associated with receivables management. We manage our crude oil marketing receivables by participating in a monthly settlement process with each of our counterparties. Ongoing account balances are monitored monthly, and we reconcile outstanding balances with counterparties. We also place great emphasis on collecting cash balances due. We maintain and monitor our allowance for doubtful accounts. Our allowance for doubtful accounts is determined based on specific identification combined with a review of the general status of the aging of all accounts. We consider the following factors in our review of our allowance for doubtful accounts: (i) historical experience with customers, (ii) the perceived financial stability of customers based on our research, (iii) the levels of credit we grant to customers, and (iv) the duration of the receivable. We may increase the allowance for doubtful accounts in response to the specific identification of customers involved in bankruptcy proceedings and similar financial difficulties. On a routine basis, we review estimates associated with the allowance for doubtful accounts to ensure that we have recorded sufficient reserves to cover potential losses. Customer payments are regularly monitored. However, a degree of risk remains due to the custom and practices of the industry. See Note 18 for further information regarding credit risk. The following table presents our allowance for doubtful accounts activity for the periods indicated (in thousands): December 31, 2020 2019 2018 Balance at beginning of period $ 141 $ 153 $ 303 Charges to costs and expenses — 26 43 Deductions (27) (38) (193) Balance at end of period $ 114 $ 141 $ 153 Cash, Cash Equivalents and Restricted Cash Cash and cash equivalents represent unrestricted cash on hand and highly liquid investments with original maturities of less than three months from the date of purchase. Cash and cash equivalents are maintained with major financial institutions, and deposit amounts may exceed the amount of federally backed insurance provided. While we regularly monitor the financial stability of these institutions, cash and cash equivalents ultimately remain at risk subject to the financial viability of these institutions. At December 31, 2020 and 2019, $5.1 million and $9.3 million, respectively, of the restricted cash balance represents amounts held in a segregated bank account by Wells Fargo as collateral for outstanding letters of credit. At December 31, 2020, $1.5 million of the restricted cash balance relates to the initial capitalization of our newly formed captive insurance company and $6.1 million represents the amount paid to our captive insurance company for insurance premiums. The following table provides a reconciliation of cash and cash equivalents and restricted cash as reported in the consolidated balance sheets that totals to the amounts shown in the consolidated statements of cash flows at the dates indicated (in thousands): December 31, 2020 2019 Cash and cash equivalents $ 39,293 $ 112,994 Restricted cash 12,772 9,261 Total cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows $ 52,065 $ 122,255 Common Shares Outstanding The following table reconciles our outstanding common stock for the periods indicated: Common shares Balance, December 31, 2017 and 2018 4,217,596 Issuance of shares in acquisition (see Note 6) 11,145 Vesting of restricted stock unit awards (see Note 14) 7,604 Shares withheld to cover taxes upon vesting of restricted stock unit awards (883) Other 71 Balance, December 31, 2019 4,235,533 Vesting of restricted stock unit awards (see Note 14) 10,290 Shares withheld to cover taxes upon vesting of restricted stock unit awards (2,107) Balance, December 31, 2020 4,243,716 Derivative Instruments In the normal course of our operations, our crude oil marketing segment purchases and sells crude oil. We seek to profit by procuring the commodity as it is produced and then delivering the product to the end users or the intermediate use marketplace. As typical for the industry, these transactions are made pursuant to the terms of forward month commodity purchase and/or sale contracts. Some of these contracts meet the definition of a derivative instrument, and therefore, we account for these contracts at fair value, unless the normal purchase and sale exception is applicable. These types of underlying contracts are standard for the industry and are the governing document for our crude oil marketing segment. None of our derivative instruments have been designated as hedging instruments. Earnings Per Share Basic earnings per share is computed by dividing our net earnings by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share is computed by giving effect to all potential shares of common stock outstanding, including our stock related to unvested restricted stock unit awards. Unvested restricted stock unit awards granted under the Adams Resources & Energy, Inc. 2018 Long-Term Incentive Plan (“2018 LTIP”) are not considered to be participating securities as the holders of these shares do not have non-forfeitable dividend rights in the event of our declaration of a dividend for common shares (see Note 14 for further discussion). A reconciliation of the calculation of basic and diluted earnings per share was as follows for the periods indicated (in thousands, except per share data): Year Ended December 31, 2020 2019 2018 Earnings per share – numerator: Net earnings $ 995 $ 8,207 $ 2,945 Denominator: Basic weighted average number of shares outstanding 4,240 4,228 4,218 Basic earnings per share $ 0.23 $ 1.94 $ 0.70 Diluted earnings per share: Diluted weighted average number of shares outstanding: Common shares 4,240 4,228 4,218 Restricted stock unit awards (1) 11 5 — Performance share unit awards (2) 3 — — Total 4,254 4,233 4,218 Diluted earnings per share $ 0.23 $ 1.94 $ 0.70 _______________ (1) The dilutive effect of restricted stock unit awards for the year ended December 31, 2018 is de minimis. (2) The dilutive effect of performance share awards are included in the calculation of diluted earnings per share when the performance share award performance conditions have been achieved. The performance conditions for the performance share unit awards granted in 2018, 2019 and 2020 were achieved as of December 31, 2018, 2019 and 2020, respectively. For the years ended December 31, 2019 and 2018, the effects of the performance share awards on earning per share were anti-dilutive. Employee Benefits We maintain a 401(k) savings plan for the benefit of our employees. We do not maintain any other pension or retirement plans. Our 401(k) plan contributory expenses were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Contributory expenses $ 1,100 $ 1,117 $ 808 Fair Value Measurements The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents, accounts receivable and accounts payable approximates fair value because of the immediate or short-term maturity of these financial instruments. Marketable securities are recorded at fair value based on market quotations from actively traded liquid markets. Our fair value estimates are based on either (i) actual market data or (ii) assumptions that other market participants would use in pricing an asset or liability, including estimates of risk, in the principal market of the asset or liability at a specified measurement date. Recognized valuation techniques employ inputs such as contractual prices, quoted market prices or rates, operating costs, discount factors and business growth rates. These inputs may be either readily observable, corroborated by market data or generally unobservable. In developing our estimates of fair value, we endeavor to utilize the best information available and apply market-based data to the highest extent possible. Accordingly, we utilize valuation techniques (such as the market approach) that maximize the use of observable inputs and minimize the use of unobservable inputs. A three-tier hierarchy has been established that classifies fair value amounts recognized in the financial statements based on the observability of inputs used to estimate such fair values. The hierarchy considers fair value amounts based on observable inputs (Levels 1 and 2) to be more reliable and predictable than those based primarily on unobservable inputs (Level 3). At each balance sheet reporting date, we categorize our financial assets and liabilities using this hierarchy. The characteristics of the fair value amounts classified within each level of the hierarchy are described as follows: • Level 1 fair values are based on quoted prices, which are available in active markets for identical assets or liabilities as of the measurement date. Active markets are defined as those in which transactions for identical assets or liabilities occur with sufficient frequency so as to provide pricing information on an ongoing basis. For Level 1 valuation of marketable securities, we utilize market quotations provided by our primary financial institution. For the valuations of derivative financial instruments, we utilize the New York Mercantile Exchange (“NYMEX”) for certain commodity valuations. • Level 2 fair values are based on (a) quoted prices for similar assets or liabilities in active markets, (b) quoted prices for identical assets or liabilities but in markets that are not actively traded or in which little information is released to the public, (c) observable inputs other than quoted prices, and (d) inputs derived from observable market data. Source data for Level 2 inputs include information provided by the NYMEX, published price data and indices, third party price survey data and broker provided forward price statistics. • Level 3 fair values are based on unobservable market data inputs for assets or liabilities. See Note 6 for a discussion of the Level 3 inputs used in the determination of the fair value of the intangible assets acquired in asset acquisitions. Fair value contracts consist of derivative financial instruments and are recorded as either an asset or liability measured at its fair value. Changes in fair value are recognized immediately in earnings unless the derivatives qualify for, and we elect, cash flow hedge accounting. We had no contracts designated for hedge accounting during any of the current reporting periods (see Note 12 for further information). Fair value estimates are based on assumptions that market participants would use when pricing an asset or liability, and we use a fair value hierarchy of three levels that prioritizes the information used to develop those assumptions. Currently, for all items presented herein, we utilize a market approach to valuing our contracts. On a contract by contract, forward month by forward month basis, we obtain observable market data for valuing our contracts. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. Impairment Testing for Long-Lived Assets Long-lived assets (primarily property and equipment and intangible assets) are reviewed for impairment when events or changes in circumstances indicate that the carrying amount of these assets may not be recoverable. Long-lived assets with carrying values that are not expected to be recovered through future cash flows are written-down to their estimated fair values. The carrying value of a long-lived asset is deemed not recoverable if it exceeds the sum of undiscounted cash flows expected to result from the use and eventual disposition of the asset. If the asset’s carrying value exceeds the sum of its undiscounted cash flows, a non-cash asset impairment charge equal to the excess of the asset’s carrying value over its estimated fair value is recorded. Fair value is defined as the price that would be received to sell an asset or be paid to transfer a liability in an orderly transaction between market participants at a specified measurement date. We measure fair value using market price indicators or, in the absence of such data, appropriate valuation techniques. Income Taxes Income taxes are accounted for using the asset and liability method. Under this approach, deferred tax assets and liabilities are recognized based on anticipated future tax consequences attributable to differences between financial statement carrying amounts of such items and their respective tax basis (see Note 13 for further information). On December 22, 2017, the Tax Cut and Jobs Act was enacted into law resulting in a reduction in the federal corporate income tax rate from 35 percent to 21 percent for years beginning in 2018, which impacts our income tax provision or benefit. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was enacted and signed into law in response to the COVID-19 pandemic. The CARES Act, among other things, permits net operating losses (“NOL”) incurred in tax years 2018, 2019 and 2020 to offset 100 percent of taxable income and be carried back to each of the five preceding taxable years to generate a refund of previously paid income taxes. We have determined that the NOL carryback provision in the CARES Act would result in a cash benefit to us for the fiscal years 2018 and 2019. We carried back our NOL for fiscal year 2018 to 2013, and in June 2020, we received a cash refund of approximately $2.7 million. We have an income tax receivable at December 31, 2020 of approximately $3.7 million for the benefit of carrying back the NOL for the fiscal year 2019 to 2014. We are forecasting an NOL for fiscal year 2020 and expect to carry it back to 2015 and 2016. As a result, we have also included the 2020 provisional amounts in income tax receivable at December 31, 2020. As we are carrying the losses back to years beginning before January 1, 2018, the receivables were recorded at the previous 35 percent federal tax rate rather than the current statutory rate of 21 percent. Inventory Inventory consists of crude oil held in storage tanks and at third-party pipelines as part of our crude oil marketing and pipeline and storage operations. Crude oil inventory is carried at the lower of cost or net realizable value. At the end of each reporting period, we assess the carrying value of our inventory and make adjustments necessary to reduce the carrying value to the applicable net realizable value. Any resulting adjustments are a component of marketing costs and expenses or pipeline and storage expenses on our consolidated statements of operations. During the years ended December 31, 2020 and 2018, we recorded a charge of $24.2 million and $5.4 million, respectively, related to the write-down of our crude oil inventory in our crude oil marketing segment due to declines in prices. There were no charges recognized during the year ended December 31, 2019. Linefill and base gas in assets we own are recorded at historical cost and consist of crude oil. We classify as linefill or base gas our proportionate share of barrels used to fill a pipeline that we own (see Note 6) and barrels that represent the minimum working requirements in storage tanks. Linefill and base gas are reviewed for impairment when events or changes in circumstances indicate that the carrying amount of these assets may not be recoverable. Linefill and base gas are included in “Property and equipment” on our Consolidated Balance Sheets. Investment in Unconsolidated Affiliate We own an approximate 15 percent equity interest (less than 3 percent voting interest) in VestaCare, Inc., a California corporation (“VestaCare”), which we purchased for a $2.5 million cash payment in 2016. VestaCare provides an array of software as a service (SaaS) electronic payment technologies to medical providers, payers and patients including VestaCare’s product offering, VestaPay™. VestaPay™ allows medical care providers to structure fully automated and dynamically updating electronic payment plans for their patients. We account for this investment under the cost method of accounting. During 2017, we reviewed our investment in VestaCare and determined that the current projected operating results did not support the carrying value of the investment. As a result, during 2017, we recognized an impairment charge of $2.5 million to write-off our investment in VestaCare. At December 31, 2020, we continue to own an approximate 15 percent equity interest in VestaCare. Property and Equipment Property and equipment is recorded at cost. Expenditures for additions, improvements and other enhancements to property and equipment are capitalized, and minor replacements, maintenance and repairs that do not extend asset life or add value are charged to expense as incurred. When property and equipment assets are retired or otherwise disposed of, the related cost and accumulated depreciation is removed from the accounts and any resulting gain or loss is included in results of operations in operating costs and expenses for the respective period. Property and equipment, except for land, is depreciated using the straight-line method over the estimated average useful lives of two thirty-nine Asset retirement obligations (“AROs”) are legal obligations associated with the retirement of tangible long-lived assets that result from their acquisition, construction, development and/or normal operation. When an ARO is incurred, we record a liability for the ARO and capitalize an equal amount as an increase in the carrying value of the related long-lived asset. ARO amounts are measured at their estimated fair value using expected present value techniques. Over time, the ARO liability is accreted to its present value (through accretion expense), and the capitalized amount is depreciated over the remaining useful life of the related long-lived asset. We will incur a gain or loss to the extent that our ARO liabilities are not settled at their recorded amounts. See Note 5 for additional information regarding our property and equipment and AROs. Recent Accounting Pronouncements In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”). This new standard eliminates certain exceptions in Accounting Standards Codification (“ASC”) 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period, and the recognition of deferred tax liabilities for outside basis differences. It also clarifies and simplifies other aspects of the accounting for income taxes. ASU 2019-12 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2020, with early adoption permitted in any interim period within that year. We elected to early adopt this standard during the period ended June 30, 2020, and most amendments within the standard were required to be applied on a prospective basis as of January 1, 2020, while certain amendments were applied on a retrospective or modified retrospective basis. The most significant impact to us is the removal of a limit on the tax benefit recognized on pre-tax losses in interim periods, which was required to be applied on a prospective basis. As a result of our adoption of ASU 2019-12, we calculated our quarterly income tax benefits based on ordinary losses incurred during the first and second quarters of 2020, no longer limiting the computed benefit if it exceeds the amount of benefit that would be recognized if the year-to-date ordinary loss were the anticipated ordinary loss for the full fiscal year. Stock-Based Compensation

Revenue Recognition

Revenue Recognition	12 Months Ended
Revenue Recognition	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition Adoption of ASC 606 On January 1, 2018, we adopted ASC 606, Revenue from Contracts with Customers (“ASC 606”) and all related Accounting Standards Updates by applying the modified retrospective method to all contracts that were not completed on January 1, 2018. The modified retrospective approach required us to recognize the cumulative effect of initially applying the new standard as an adjustment to the opening balance of retained earnings on January 1, 2018. Comparative information has not been restated and continues to be reported under the historical accounting standards in effect for those periods. The adoption of the new revenue standard did not result in a cumulative effect adjustment to our retained earnings since there was no significant impact upon adoption of the new standard. There was also no material impact to revenues, or any other financial statement line items for the year ended December 31, 2018 as a result of applying ASC 606. We expect the impact of the adoption of ASC 606 to remain immaterial to our net earnings on an ongoing basis. Revenue Recognition ASC 606’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The new revenue standard requires entities to recognize revenue through the application of a five-step model, which includes: identification of the contract; identification of the performance obligations; determination of the transaction price; allocation of the transaction price to the performance obligations; and recognition of revenue as the entity satisfies the performance obligations. Our revenues are primarily generated from the marketing, transportation, storage and terminalling of crude oil and other related products and the tank truck transportation of liquid chemicals, pressurized gases, asphalt and dry bulk. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in ASC 606. To identify the performance obligations, we considered all of the products or services promised in the contracts with customers, whether explicitly stated or implied based on customary business practices. Revenue is recognized when, or as, each performance obligation is satisfied under terms of the contract. Payment is typically due in full within 30 days of the invoice date. The following information describes the nature of our significant revenue streams by segment and type: Crude oil marketing segment . Crude oil marketing activities generate revenues from the sale and delivery of crude oil purchased either directly from producers or on the open market. Most of our crude oil purchase and sale contracts qualify and are designated as non-trading activities, and we consider these contracts as normal purchases and sales activity. For normal purchases and sales, our customers are invoiced monthly based upon contractually agreed upon terms with revenue recognized in the month in which the physical product is delivered to the customer, generally upon delivery of the product to the customer. Revenue is recognized based on the transaction price and the quantity delivered. The majority of our crude oil sales contracts have multiple distinct performance obligations as the promise to transfer the individual goods (e.g., barrels of crude oil) is separately identifiable from the other goods promised within the contracts. Our performance obligations are satisfied at a point in time. For normal sales arrangements, revenue is recognized in the month in which control of the physical product is transferred to the customer, generally upon delivery of the product to the customer. Transportation segment . Transportation activities generate revenue from the truck transportation of liquid chemicals, pressurized gases, asphalt or dry bulk from point A to point B for customers. Each sales order is associated with our master transportation agreements and is considered a distinct performance obligation. The performance obligations associated with this segment are satisfied over time as the goods and services are delivered. Pipeline and storage segment . Pipeline and storage activities generate revenue by transporting crude oil on our pipeline and providing storage and terminalling services for our customers. Our operations generally consist of fee-based activities associated with the transportation of crude oil and providing storage and terminalling services for crude oil. Revenues from pipeline tariffs and fees are associated with the transportation of crude oil at a published tariff. We primarily recognize pipeline tariff and fee revenues over time as services are rendered, based on the volumes transported. As is common in the pipeline transportation industry, our tariffs incorporate a loss allowance factor. We recognize the allowance volumes collected as part of the transaction price and record this non-cash consideration at fair value, measured as of the contract inception date. Storage fees are typically recognized in revenue ratably over the term of the contract regardless of the actual storage capacity utilized as our performance obligation is to make available storage capacity for a period of time. Terminalling fees are recognized as the crude oil enters or exits the terminal and is received from or delivered to the connecting carrier or third-party terminal, as applicable. Practical Expedients In connection with our adoption of ASC 606, we reviewed our revenue contracts for impact upon adoption. For example, our revenue contracts often include promises to transfer various goods and services to a customer. Determining whether goods and services are considered distinct performance obligations that should be accounted for separately versus together will continue to require continual assessment. We also used practical expedients permitted by ASC 606 when applicable. These practical expedients included: • Applying the new guidance only to contracts that were not completed as of January 1, 2018; and • Not accounting for the effects of significant financing components if the company expects that the period between when the entity transfers a promised good or service to a customer and when the customer pays for that good or service will be one year or less. Contract Balances The timing of revenue recognition, billings and cash collections results in billed accounts receivable and customer advances and deposits (contract liabilities) on our consolidated balance sheets. Currently, we do not record any contract assets in our financial statements due to the timing of revenue recognized and when our customers are billed. Our crude oil marketing customers are generally billed monthly based on contractually agreed upon terms. However, we sometimes receive advances or deposits from customers before revenue is recognized, resulting in contract liabilities. These contract assets and liabilities, if any, are reported on our consolidated balance sheets at the end of each reporting period. Revenue Disaggregation The following table disaggregates our revenue by segment and by major source for the periods indicated (in thousands): Reporting Segments Marketing Transportation Pipeline and storage (1) Total Year Ended December 31, 2020 Revenues from contracts with customers $ 915,438 $ 71,724 $ 272 $ 987,434 Other (2) 34,988 — — 34,988 Total revenues $ 950,426 $ 71,724 $ 272 $ 1,022,422 Timing of revenue recognition: Goods transferred at a point in time $ 915,438 $ — $ — $ 915,438 Services transferred over time — 71,724 272 71,996 Total revenues from contracts with customers $ 915,438 $ 71,724 $ 272 $ 987,434 Year Ended December 31, 2019 Revenues from contracts with customers $ 1,555,393 $ 63,191 $ — $ 1,618,584 Other (2) 192,663 — — 192,663 Total revenues $ 1,748,056 $ 63,191 $ — $ 1,811,247 Timing of revenue recognition: Goods transferred at a point in time $ 1,555,393 $ — $ — $ 1,555,393 Services transferred over time — 63,191 — 63,191 Total revenues from contracts with customers $ 1,555,393 $ 63,191 $ — $ 1,618,584 Year Ended December 31, 2018 Revenues from contracts with customers $ 1,580,997 $ 55,776 $ — $ 1,636,773 Other (2) 113,440 — — 113,440 Total revenues $ 1,694,437 $ 55,776 $ — $ 1,750,213 Timing of revenue recognition: Goods transferred at a point in time $ 1,580,997 $ — $ — $ 1,580,997 Services transferred over time — 55,776 — 55,776 Total revenues from contracts with customers $ 1,580,997 $ 55,776 $ — $ 1,636,773 _______________ (1) On October 22, 2020, we acquired a crude oil pipeline and related terminal facility assets, resulting in a new operating segment. See Note 6 and Note 9 for further information. (2) Other crude oil marketing revenues are recognized under ASC 815, Derivatives and Hedging , and ASC 845, Nonmonetary Transactions – Purchases and Sales of Inventory with the Same Counterparty . Other Crude Oil Marketing Revenue Certain of the commodity purchase and sale contracts utilized by our crude oil marketing segment qualify as derivative instruments with certain specifically identified contracts also designated as trading activity. From the time of contract origination, these contracts are marked-to-market and recorded on a net revenue basis in the accompanying consolidated financial statements. Certain of our crude oil contracts may be with a single counterparty to provide for similar quantities of crude oil to be bought and sold at different locations. These contracts are entered into for a variety of reasons, including effecting the transportation of the commodity, to minimize credit exposure, and/or to meet the competitive demands of the customer. These buy/sell arrangements are reflected on a net revenue basis in the accompanying consolidated financial statements. Reporting these crude oil contracts on a gross revenue basis would increase our reported revenues as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Revenue gross-up $ 419,127 $ 859,091 $ 448,846

Prepayments and Other Current A

Prepayments and Other Current Assets	12 Months Ended
Prepayments and Other Current Assets	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepayments and Other Current Assets	Prepayments and Other Current Assets The components of prepayments and other current assets were as follows at the dates indicated (in thousands): December 31, 2020 2019 Insurance premiums $ 690 $ 473 Vendor prepayment 1,085 — Rents, licenses and other 1,189 1,086 Total $ 2,964 $ 1,559

Property and Equipment

Property and Equipment	12 Months Ended
Property and Equipment	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment The historical costs of our property and equipment and related accumulated depreciation and amortization balances were as follows at the dates indicated (in thousands): Estimated Useful Life December 31, in Years 2020 2019 Tractors and trailers 5 – 6 $ 101,813 $ 110,153 Field equipment 2 – 5 22,139 21,780 Finance lease ROU assets (1) 3 – 6 20,266 8,854 Pipeline and related facilities 20 – 25 21,265 — Linefill and base gas (2) N/A 3,333 — Buildings 5 – 39 14,977 16,055 Office equipment 2 – 5 1,893 1,951 Land N/A 1,790 1,790 Construction in progress N/A 1,626 3,661 Total property and equipment, at cost 189,102 164,244 Less accumulated depreciation and amortization (94,968) (95,198) Property and equipment, net $ 94,134 $ 69,046 ______________ (1) Our finance lease right-of-use (“ROU”) assets arise from leasing arrangements for the right to use various classes of underlying assets including tractors, trailers, a tank storage and throughput arrangement and office equipment (see Note 16 for further information). Accumulated amortization of the assets presented as “Finance lease ROU assets” was $5.0 million and $2.5 million as of December 31, 2020 and 2019, respectively. (2) Linefill and base gas represents crude oil in the VEX pipeline (Note 6) and storage tanks we own, and the crude oil is recorded at historical cost. Components of depreciation and amortization expense were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Depreciation and amortization, excluding amounts under finance leases $ 16,026 $ 14,833 $ 10,112 Amortization of property and equipment under finance leases 2,547 1,808 542 Total depreciation and amortization $ 18,573 $ 16,641 $ 10,654 Gains on Sales of Assets We sold certain used tractors, trailers and other equipment and recorded net pre-tax gains as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Gains on sales of used tractors, trailers and equipment $ 1,859 $ 1,400 $ 1,240 Asset Retirement Obligations We record AROs for the estimated retirement costs associated with certain tangible long-lived assets. The estimated fair value of AROs are recorded in the period in which they are incurred and the corresponding cost is capitalized by increasing the carrying amount of the related long-lived asset. The liability is accreted to its then present value each period, and the capitalized cost is depreciated over the useful life of the asset. If the liability is settled for an amount other than the recorded amount, an increase or decrease to expense is recognized. The following table reflects a summary of our AROs for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 ARO liability at beginning of year $ 1,573 $ 1,525 $ 1,273 Liabilities incurred — 17 252 Accretion of discount 49 48 36 Liabilities settled (38) (17) (36) AROs related to pipeline acquisition (see Note 6) 723 — — ARO liability at end of year $ 2,307 $ 1,573 $ 1,525

Acquisitions

Acquisitions	12 Months Ended
Acquisitions	Dec. 31, 2020
Asset Acquisition [Abstract]
Acquisitions	Acquisitions Acquisition of Pipeline and Related Terminal Facility Assets On October 22, 2020, we and our subsidiary, GulfMark Terminals, LLC (“GMT”) entered into a purchase and sale agreement with EnLink Midstream Operating, L.P. for the purchase of the outstanding equity interests of Victoria Express Pipeline, LLC (“VEX”) and certain related pipeline terminal facility assets for $20.0 million, plus a cash payment for working capital items. Of the purchase price, $10.0 million was paid at closing, with the remainder to be paid in four quarterly installments of $2.5 million, plus interest at a rate of 4.0 percent per annum, beginning in March 2021. The equity interests in GMT, VEX and the other acquired assets were pledged to secure the payment of the installment portions of the purchase price as part of the agreement. The VEX Pipeline System, with truck and storage terminals at both Cuero and the Port of Victoria, Texas, is a crude oil and condensate pipeline system, which connects the heart of the Eagle Ford Basin to the Gulf Coast waterborne market. The VEX Pipeline System includes 56 miles of 12-inch pipeline, which spans DeWitt County to Victoria County, Texas, with 350,000 barrels of above ground storage, two 8 bay truck offload stations, and access to two docks at the Port of Victoria. The VEX Pipeline System can receive crude oil by pipeline and truck, and has downstream pipeline connections to two terminals today, with potential for additional downstream connection opportunities in the future. The pipeline system has a current capacity of 90,000 barrels per day. The VEX Pipeline System and related terminal assets have been included in our new pipeline and storage segment. We expect that this acquisition will further strengthen our ability to provide excellent service to the producers in the Gulf Coast region, as well as more effectively service our end-user markets along the Gulf Coast. In addition, the VEX Pipeline System complements our existing storage terminal and dock at the Port of Victoria, where we now control approximately 450,000 barrels of storage with three docks after giving effect to the acquisition. In addition to the purchase price of $20.0 million and a cash payment of $0.5 million for working capital items, we also incurred approximately $0.6 million of acquisition costs in connection with this acquisition, which has been included in the allocation of the total purchase price of $21.0 million to the assets acquired. The following table summarizes the allocation of the purchase price based on the estimated fair value of the assets and liabilities acquired at the acquisition date (in thousands): Accounts receivable and other current assets $ 80 Linefill and base gas 1,013 Property and equipment — Pipeline and related terminal facilities 20,542 Accounts payable and other accrued liabilities (598) Total purchase price $ 21,037 The estimated fair value of the acquired property and equipment was determined using the cost approach, specifically determining the replacement cost value of each type of asset. In connection with the acquisition, we recorded an asset retirement obligation of approximately $0.7 million related to legal and regulatory requirements to perform specified retirement activities, including purging and sealing the pipeline if it is abandoned. CTL On May 17, 2020, we entered into a purchase and sale agreement with Comcar Industries, Inc. (“Comcar”), a bulk carrier trucking company, for the purchase of substantially all of the transportation assets of Comcar’s subsidiary, CTL Transportation, LLC (“CTL”). CTL provides short-haul delivery services to customers in the chemical industry, with operations in nine locations in the southeastern United States. On June 26, 2020, we closed on the asset acquisition for approximately $9.0 million in cash. This acquisition added approximately 163 tractors and 328 trailers to our existing transportation fleet, and these assets were included in our transportation segment. This acquisition added new customers, new market areas and new product lines to our transportation segment portfolio. As a result of the acquisition, we added services to new and existing customers in six new market areas, including new terminals in Louisiana, Missouri, Ohio, Georgia and Florida. We also incurred approximately $0.1 million of acquisition costs in connection with this acquisition, which has been included in the allocation of the total purchase price of $9.2 million to the assets acquired. The following table summarizes the allocation of the purchase price based on the estimated fair value of the assets acquired at the acquisition date (in thousands): Property and equipment — tractors and trailers $ 5,901 Materials and supplies 87 Intangible assets — customer relationships 3,175 Total purchase price $ 9,163 The estimated fair value of the acquired property and equipment was determined using the estimated market value of each type of asset. The estimated fair value of the acquired customer relationship intangible assets was determined using an income approach, specifically a discounted cash flow analysis. The income approach estimates the future benefits of the customer relationships and deducts the expenses incurred in servicing the relationships and the contributions from the other business assets to derive the future net benefits of these assets. The future net benefits are discounted back to present value using the appropriate discount rate, which results in the value of the customer relationships. A customer relationship intangible asset is the relationship between CTL and various customers to whom we did not have a previous relationship. The customer relationships we acquired in this transaction provide us with access to those customers to whom we did not have a previous relationship and allows us to enter product markets in which we have not previously participated. Because of the highly competitive and fragmented transportation market, we believe access to these customers will provide us with an entry into new market areas. The discounted cash flow analysis used to estimate the fair value of the CTL customer relationships relied on Level 3 fair value inputs. Level 3 fair values are based on unobservable inputs. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset at the measurement date. With respect to the CTL customer relationships, the Level 3 inputs included the rate of retention of the current customers of CTL as of the valuation date, our transportation segment’s historical customer retention rate and projected future revenues associated with the customers. The CTL customers expected to remain with us after the transaction were included in the valuation of the customer relationships. We are amortizing the customer relationship intangible assets over a period of seven years, using a modified straight-line approach. See Note 8 for further information regarding our intangible assets. In connection with the acquisition, we entered into a finance lease agreement for an additional 40 trailers with a six EH Transport On April 10, 2019, we entered into a purchase and sale agreement with EH Transport, Inc. and affiliates (collectively, “EH Transport”), a Houston, Texas based bulk carrier trucking company, for the purchase of certain transportation assets. On May 6, 2019, we closed on the asset acquisition for approximately $6.4 million, which consisted of $5.6 million in cash after post-closing adjustments related to equipment qualifications, 11,145 of our common shares valued at $0.4 million and contingent consideration valued at approximately $0.4 million. This acquisition added approximately 39 tractors and 51 trailers to our existing transportation fleet, and these assets were included in our transportation segment. This acquisition added new customers and new product lines to our transportation segment portfolio, which allows us to grow into new markets. As a result of the acquisition, in addition to general chemical products, we transport liquefied petroleum gas, asphalt and bleach for customers. We incurred approximately $0.1 million of acquisition costs in connection with this acquisition, which has been included in the allocation of the purchase price to the assets acquired. The following table summarizes the consideration paid for the EH Transport assets and the estimated fair value of the assets acquired at the acquisition date (in thousands): Consideration: Cash $ 5,624 Value of AE common shares issued 392 Contingent consideration arrangement 431 Fair value of total consideration transferred $ 6,447 Recognized amounts of identifiable assets acquired: Property and equipment — tractors and trailers $ 4,576 Shop, office and telecommunication equipment 20 Intangible assets — customer relationships 1,851 Total purchase price $ 6,447 The fair market value of the common shares issued in this transaction was determined based upon the closing share price of AE common stock on May 6, 2019 of $35.15. We assumed no liabilities in this acquisition. The estimated fair value of the acquired property and equipment was determined using the estimated market value of each type of asset. The estimated fair value of the acquired customer relationship intangible assets was determined using an income approach, specifically a discounted cash flow analysis. The income approach estimates the future benefits of the customer relationships and deducts the expenses incurred in servicing the relationships and the contributions from the other business assets to derive the future net benefits of these assets. The future net benefits are discounted back to present value using the appropriate discount rate, which results in the value of the customer relationships. A customer relationship intangible asset is the relationship between EH Transport and various customers to whom we did not have a previous relationship. The customer relationships we acquired in this transaction provide us with access to those customers to whom we did not have a previous relationship and allows us to enter product markets in which we had not previously participated. Because of the highly competitive and fragmented transportation market, we believe access to these customers and product lines will provide us with an entry into new markets. The discounted cash flow analysis used to estimate the fair value of the EH Transport customer relationships relied on Level 3 fair value inputs. Level 3 fair values are based on unobservable inputs. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset at the measurement date. With respect to the EH Transport customer relationships, the Level 3 inputs include the rate of retention of the current customers of EH Transport as of the valuation date, our transportation segment’s historical customer retention rate and projected future revenues associated with the customers. The EH Transport customers expected to remain with us after the transaction were included in the valuation of the customer relationships. We are amortizing the customer relationship intangible assets over a period of seven years, using a modified straight-line approach. See Note 8 for further information regarding our intangible assets. The purchase and sale agreement included a contingent consideration arrangement that required us to pay the former owner of the assets up to a quarterly maximum amount of $146,875 (undiscounted) plus interest for the first four quarters following the closing date of the acquisition. The amount to be paid was based upon the number of qualified truck drivers that were employed by us at the end of each quarter. The potential undiscounted amount of all future payments that could be required to be paid under the contingent consideration arrangement was between $0 and $587,500. The fair value of the contingent consideration arrangement of $0.4 million was estimated by applying an income valuation approach, which is based on Level 3 inputs, including the number of qualified truck drivers we expect will be employed at each payment date. At December 31, 2020, all amounts outstanding under the contingent consideration arrangement had been paid. Red River On October 1, 2018, we completed the purchase of a trucking company for $10.0 million that owned approximately 113 tractors and 126 trailers operating in the Red River area in North Texas and South Central Oklahoma. This acquisition was included in our crude oil marketing segment from the date of the acquisition. We incurred approximately $0.3 million of acquisition costs in connection with this acquisition, which was included in the allocation of the purchase price to the assets acquired. The purchase price of approximately $10.3 million was allocated on October 1, 2018 as follows (in thousands): Tractors $ 4,799 Trailers 4,901 Field equipment 381 Materials and supplies 191 Total purchase price $ 10,272

Other Assets

Other Assets	12 Months Ended
Other Assets	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Other Assets Components of other assets were as follows at the dates indicated (in thousands): December 31, 2020 2019 Amounts associated with liability insurance program: Insurance collateral deposits $ 714 $ 1,233 Excess loss fund 617 943 Accumulated interest income 449 609 Other amounts: State collateral deposits 31 37 Materials and supplies 488 477 Other 84 — Total $ 2,383 $ 3,299

Intangible Assets

Intangible Assets	12 Months Ended
Intangible Assets	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets The following table summarizes our intangible assets at the dates indicated (in thousands): December 31, 2020 December 31, 2019 Gross Accumulated Gross Accumulated Value Amortization Net Value Amortization Net Customer relationships: EH Transport acquisition $ 1,703 $ (500) $ 1,203 $ 1,808 $ (211) $ 1,597 CTL acquisition 3,173 (270) 2,903 — — — Intangible assets, net $ 4,876 $ (770) $ 4,106 $ 1,808 $ (211) $ 1,597 We are amortizing the customer relationship intangible assets over a period of seven years, using a modified straight-line approach. During the years ended December 31, 2020 and 2019, we recorded $0.6 million and $0.2 million, respectively, of amortization expense related to these intangible assets. The following table presents our forecast of amortization expense associated with these intangible assets for the years indicated (in thousands): 2021 2022 2023 2024 2025 EH Transport acquisition $ 274 $ 254 $ 235 $ 218 $ 202 CTL acquisition 524 492 460 428 413 Total $ 798 $ 746 $ 695 $ 646 $ 615

Segment Reporting

Segment Reporting	12 Months Ended
Segment Reporting	Dec. 31, 2020
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We operate and report in three business segments: (i) crude oil marketing, transportation and storage; (ii) tank truck transportation of liquid chemicals, pressurized gases, asphalt and dry bulk; and (iii) beginning in the fourth quarter of 2020, pipeline transportation, terminalling and storage of crude oil, which includes the pipeline and related terminal facility assets we acquired in October 2020 (see Note 6 for further information regarding our acquisition). Our business segments are generally organized and managed according to the types of services rendered. See Note 3 for a summary of the types of products and services from which each segment derives its revenues. Our Chief Operating Decision Maker (“CODM”) (our Chief Executive Officer) evaluates segment performance based on measures including segment operating (losses) earnings and capital spending (property and equipment additions). Segment operating (losses) earnings is calculated as segment revenues less segment operating costs and depreciation and amortization expense. Financial information by reporting segment was as follows for the periods indicated (in thousands): Reporting Segments Marketing Transportation Pipeline and storage Other Total Year Ended December 31, 2020 Revenues $ 950,426 $ 71,724 $ 272 $ — $ 1,022,422 Segment operating (losses) earnings (1) 2,974 1,873 (310) — 4,537 Depreciation and amortization 7,421 10,963 189 — 18,573 Property and equipment additions (2) (3) 3,130 1,355 — 523 5,008 Year Ended December 31, 2019 Revenues $ 1,748,056 $ 63,191 $ — $ — $ 1,811,247 Segment operating earnings (1) 16,099 1,899 — — 17,998 Depreciation and amortization 8,741 7,900 — — 16,641 Property and equipment additions (2) (3) 7,249 28,472 — 22 35,743 Year Ended December 31, 2018 Revenues $ 1,694,437 $ 55,776 $ — $ — $ 1,750,213 Segment operating earnings (1) 7,008 3,337 — — 10,345 Depreciation and amortization 6,384 4,270 — — 10,654 Property and equipment additions (2) (3) 1,540 10,178 — 13 11,731 _________________ (1) Our crude oil marketing segment’s operating earnings included inventory valuation losses of $15.0 million, inventory liquidation gains of $3.7 million, and inventory valuation losses of $5.4 million for the years ended December 31, 2020, 2019 and 2018, respectively. (2) Our segment property and equipment additions do not include assets acquired under finance leases during the years ended December 31, 2020, 2019 and 2018. See Note 16 for further information. (3) During the years ended December 31, 2020, 2019 and 2018, we had $0.5 million, $22 thousand and $13 thousand, respectively, of property and equipment additions for leasehold improvements at our corporate headquarters, which were not attributed or allocated to any of our reporting segments. Segment operating earnings reflect revenues net of operating costs and depreciation and amortization expense and are reconciled to earnings (losses) before income taxes, as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Segment operating earnings $ 4,537 $ 17,998 $ 10,345 General and administrative (10,284) (10,198) (8,937) Operating earnings (5,747) 7,800 1,408 Gain on dissolution of investment — 573 — Interest income 656 2,766 2,155 Interest expense (444) (636) (109) (Losses) earnings before income taxes $ (5,535) $ 10,503 $ 3,454 Identifiable assets by industry segment were as follows at the dates indicated (in thousands): December 31, 2020 2019 2018 Reporting segment: Marketing $ 128,441 $ 141,402 $ 119,370 Transportation 72,247 58,483 34,112 Pipeline and storage 24,541 — — Cash and other (1) 70,958 130,957 125,388 Total assets $ 296,187 $ 330,842 $ 278,870 _________________ (1) Other identifiable assets are primarily corporate cash, corporate accounts receivable, properties and operating lease right-of-use assets not identified with any specific segment of our business. All of our property and equipment is located in the U.S. Substantially all of our consolidated revenues are earned in the U.S. and derived from a wide customer base. Intersegment sales during the year ended December 31, 2020 were insignificant, and there were no intersegment sales during the years ended December 31, 2019 and 2018. Accounting policies for transactions between business segments are consistent with applicable accounting policies as disclosed herein.

Transactions with Affiliates

Transactions with Affiliates	12 Months Ended
Transactions with Affiliates	Dec. 31, 2020
Related Party Transactions [Abstract]
Transactions with Affiliates	Transactions with Affiliates We enter into certain transactions in the normal course of business with affiliated entities including direct cost reimbursement for shared phone and administrative services. In addition, we lease our corporate office space in a building operated by 17 South Briar Hollow Lane, LLC, an affiliate of KSA Industries, Inc., which is an affiliated entity. Activities with affiliates were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Affiliate billings to us $ 18 $ 83 $ 75 Billings to affiliates 5 5 6 Rentals paid to affiliate 644 487 487

Other Current Liabilities

Other Current Liabilities	12 Months Ended
Other Current Liabilities	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other Current Liabilities The components of other current liabilities were as follows at the dates indicated (in thousands): December 31, 2020 2019 Accrued purchase price for VEX acquisition (see Note 6) $ 10,000 $ — Accrual for payroll, benefits and bonuses 6,575 2,301 Other 5,768 5,001 Total $ 22,343 $ 7,302

Derivative Instruments and Fair

Derivative Instruments and Fair Value Measurements	12 Months Ended
Derivative Instruments and Fair Value Measurements	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Fair Value Measurements	Derivative Instruments and Fair Value Measurements Derivative Instruments At December 31, 2020, we had in place six commodity purchase and sale contracts, of which three had a fair value associated with them as the contractual prices of crude oil were outside the range of prices specified in the agreements. These commodity purchase and sale contracts encompassed approximately 192 barrels per day of crude oil during January 2021 through December 2021. At December 31, 2019, we had in place six commodity purchase and sale contracts with no fair value associated with them as the contractual prices of crude oil were within the range of prices specified in the agreements. These commodity purchase and sale contracts encompassed approximately: • 258 barrels per day of crude oil during January 2020 through February 2020; • 322 barrels per day of crude oil during March 2020 through April 2020; and • 258 barrels per day of crude oil during May 2020 through December 2020. The estimated fair value of forward month commodity contracts (derivatives) reflected in the accompanying consolidated balance sheets were as follows at the dates indicated (in thousands): Balance Sheet Location and Amount Current Other Current Other December 31, 2020 Assets Assets Liabilities Liabilities Asset derivatives: Fair value forward hydrocarbon commodity contracts at gross valuation $ 61 $ — $ — $ — Liability derivatives: Fair value forward hydrocarbon commodity contracts at gross valuation — — 52 — Less counterparty offsets — — — — As reported fair value contracts $ 61 $ — $ 52 $ — December 31, 2019 Asset derivatives: Fair value forward hydrocarbon commodity contracts at gross valuation $ $ — $ — $ — Liability derivatives: Fair value forward hydrocarbon commodity contracts at gross valuation — — — — Less counterparty offsets — — — — As reported fair value contracts $ — $ — $ — $ — We only enter into commodity contracts with creditworthy counterparties and evaluate our exposure to significant counterparties on an ongoing basis. At December 31, 2020 and 2019, we were not holding nor have we posted any collateral to support our forward month fair value derivative activity. We are not subject to any credit-risk related trigger events. We have no other financial investment arrangements that would serve to offset our derivative contracts. Forward month commodity contracts (derivatives) reflected in the accompanying consolidated statements of operations were as follows for the periods indicated (in thousands): Gains (Losses) Year Ended December 31, 2020 2019 2018 Revenues – marketing $ 9 $ (24) $ 2 Fair Value Measurements The following table reflects, by level with the Level 1, 2 and 3 fair value hierarchy, the carrying values of our financial assets and liabilities at the dates indicated (in thousands): Fair Value Measurements Using Quoted Prices in Active Significant Markets for Other Significant Identical Assets Observable Unobservable and Liabilities Inputs Inputs Counterparty (Level 1) (Level 2) (Level 3) Offsets Total December 31, 2020 Derivatives: Current assets $ — $ 61 $ — $ — $ 61 Current liabilities — (52) — — (52) Net value $ — $ 9 $ — $ — $ 9 December 31, 2019 Derivatives: Current assets $ — $ — $ — $ — $ — Current liabilities — — — — — Net value $ — $ — $ — $ — $ — These assets and liabilities are measured on a recurring basis and are classified based on the lowest level of input used to estimate their fair value. Our assessment of the relative significance of these inputs requires judgments. When determining fair value measurements, we make credit valuation adjustments to reflect both our own nonperformance risk and our counterparty’s nonperformance risk. When adjusting the fair value of derivative contracts for the effect of nonperformance risk, we consider the impact of netting and any applicable credit enhancements. Credit valuation adjustments utilize Level 3 inputs, such as credit scores to evaluate the likelihood of default by us or our counterparties. At December 31, 2020 and 2019, credit valuation adjustments were not significant to the overall valuation of our fair value contracts. As a result, applicable fair value assets and liabilities are included in their entirety in the fair value hierarchy.

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of our income tax (provision) benefit were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Current: Federal $ 13,246 $ 164 $ 388 State (327) (375) 39 Total current 12,919 (211) 427 Deferred: Federal (6,631) (2,063) (752) State 242 (22) (184) Total deferred (6,389) (2,085) (936) Total (provision for) benefit from income taxes $ 6,530 $ (2,296) $ (509) A reconciliation of the (provision for) benefit from income taxes with amounts determined by applying the statutory U.S. federal income tax rate to income before income taxes was as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Pre-tax net book income (loss) $ (5,535) $ 10,503 $ 3,454 Statutory federal income tax (provision) benefit $ 1,162 $ (2,206) $ (725) State income tax (provision) benefit (16) (397) (145) 2018/2019 carryback 2,664 — — 2020 carryback 2,642 — — Reverse valuation allowance — — 98 Return to provision adjustments 13 285 388 Other 65 22 (125) Total (provision for) benefit from income taxes $ 6,530 $ (2,296) $ (509) Effective income tax rate (1) 118 % 22 % 15 % _______________ (1) Excluding the adjustment related to the carryback of the 2018, 2019 and 2020 losses, the effective income tax rate for 2020 is 22 percent. Deferred income taxes reflect the net difference between the financial statement carrying amounts and the underlying income tax basis in these items. The components of the federal deferred tax asset (liability) were as follows at the dates indicated (in thousands): December 31, 2020 2019 Long-term deferred tax asset (liability): Prepaid and other insurance $ (861) $ 248 Property (12,807) (9,953) Investment in unconsolidated affiliate 525 525 Valuation allowance related to investment in unconsolidated affiliate (525) (525) Net operating loss 536 3,567 Other 423 (184) Net long-term deferred tax liability (12,709) (6,322) Net deferred tax liability $ (12,709) $ (6,322) Financial statement recognition and measurement of positions taken, or expected to be taken, by an entity in its income tax returns must consider the uncertainty and judgment involved in the determination and filing of income taxes. Tax positions taken in an income tax return that are recognized in the financial statements must satisfy a more-likely-than-not recognition threshold, assuming that the tax position will be examined by taxing authorities with full knowledge of all relevant information. We have no significant unrecognized tax benefits. Interest and penalties associated with income tax liabilities are classified as income tax expense. The earliest tax years remaining open for audit for federal and major states of operations are as follows: Earliest Open Tax Year Federal 2013 Texas 2016 Louisiana 2017 Michigan 2016

Share-Based Compensation Plan

Share-Based Compensation Plan	12 Months Ended
Share-Based Compensation Plan	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Share-Based Compensation Plan	Stock-Based Compensation Plan In May 2018, our shareholders approved the 2018 LTIP, a long-term incentive plan under which any employee or non-employee director who provides services to us is eligible to participate in the plan. The 2018 LTIP, which is overseen by the Compensation Committee of our Board of Directors, provides for the grant of various types of equity awards, of which restricted stock unit awards and performance-based compensation awards have been granted. The maximum number of shares authorized for issuance under the 2018 LTIP is 150,000 shares, and the 2018 LTIP is effective until May 8, 2028. We began awarding stock-based compensation to eligible employees and directors in June 2018. After giving effect to awards granted and forfeitures made under the 2018 LTIP, and the achievement of performance factors through December 31, 2020, a total of 88,374 shares were available for issuance. Compensation expense recognized in connection with equity-based awards was as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Compensation expense $ 643 $ 478 $ 255 If dividends are paid with respect to our common shares during the vesting period, an equivalent amount will accrue and be held by us without interest until the restricted stock unit awards and performance share unit awards vest, at which time the amount will be paid to the recipient. If the award is forfeited prior to vesting, the accrued dividends will also be forfeited. At December 31, 2020 and 2019, we had $50,800 and $23,600, respectively, of accrued dividend amounts for awards granted under the 2018 LTIP. Restricted Stock Unit Awards A restricted stock unit award is a grant of a right to receive our common shares in the future at no cost to the recipient apart from fulfilling service and other conditions once a defined vesting period expires, subject to customary forfeiture provisions. A restricted stock unit award will either be settled by the delivery of common shares or by the payment of cash based upon the fair market value of a specified number of shares, at the discretion of the Compensation Committee, subject to the terms of the applicable award agreement. The Compensation Committee intends for these awards to vest with the settlement of common shares. Restricted stock unit awards generally vest at a rate of approximately 33 percent per year beginning one year after the grant date and are non-vested until the required service periods expire. The fair value of a restricted stock unit award is based on the market price per share of our common shares on the date of grant. Compensation expense is recognized based on the grant date fair value over the requisite service or vesting period. The following table presents restricted stock unit award activity for the periods indicated: Weighted- Average Grant Number of Date Fair Value Shares per Share (1) Restricted stock unit awards at January 1, 2018 — $ — Granted (2) 13,733 $ 43.00 Vested — $ — Forfeited — $ — Restricted stock unit awards at December 31, 2018 13,733 $ 43.00 Granted (3) 14,376 $ 34.00 Vested (7,188) $ 41.90 Forfeited (2,139) $ 38.42 Restricted stock unit awards at December 31, 2019 18,782 $ 37.05 Granted (4) 20,346 $ 24.85 Vested (9,578) $ 36.36 Forfeited (2,060) $ 30.07 Restricted stock unit awards at December 31, 2020 27,490 $ 28.64 ____________________ (1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued. (2) The aggregate grant date fair value of restricted stock unit awards issued during 2018 was $0.6 million based on a grant date market price of our common shares of $43.00 per share. (3) The aggregate grant date fair value of restricted stock unit awards issued during 2019 was $0.5 million based on a grant date market price of our common shares of $34.00 per share. (4) The aggregate grant date fair value of restricted stock unit awards issued during 2020 was $0.5 million based on grant date market prices of our common shares ranging from $24.77 to $26.23 per share. Unrecognized compensation cost associated with restricted stock unit awards was approximately $0.3 million at December 31, 2020. Due to the graded vesting provisions of these awards, we expect to recognize the remaining compensation cost for these awards over a weighted-average period of 1.4 years. Performance Share Unit Awards An award granted as performance-based compensation is awarded to a participant contingent upon attainment of our future performance goals during a performance cycle. Performance goals are pre-established by the Compensation Committee. Following the end of the performance period, the holder of a performance-based compensation award is entitled to receive payment of an amount not exceeding the number of shares of common stock subject to, or the maximum value of, the performance-based compensation award, based on the achievement of the performance measures for the performance period. The performance share unit awards generally vest in full approximately three The fair value of a performance share unit award is based on the market price per share of our common shares on the date of grant. Compensation expense is recognized based on the grant date fair value over the requisite service or vesting period. Compensation expense is generally adjusted for the performance goals on a quarterly basis. The following table presents performance share unit award activity for the periods indicated: Weighted- Average Grant Number of Date Fair Value Shares per Share (1) Performance share unit awards at January 1, 2018 — $ — Granted (2) 7,932 $ 43.00 Performance factor decrease (3) (3,966) $ 43.00 Vested — $ — Forfeited — $ — Performance share unit awards at December 31, 2018 3,966 $ 43.00 Granted (4) 8,094 $ 34.00 Performance factor decrease (3) (7,312) $ 34.23 Vested (416) $ 43.00 Forfeited (1,545) $ 37.37 Performance share unit awards at December 31, 2019 2,787 $ 43.00 Granted (5) 10,781 $ 24.92 Performance factor increase (3) 3,981 $ 24.92 Vested (713) $ 28.55 Forfeited (595) $ 30.22 Performance share unit awards at December 31, 2020 16,241 $ 27.67 ____________________ (1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued. (2) The aggregate grant date fair value of performance share unit awards issued during 2018 was $0.2 million based on a grant date market price of our common shares of $43.00 per share and assuming a performance factor of 100 percent. (3) The performance factor for awards granted in 2018 was lowered to 47.5 percent based on a comparison of actual results for 2018 to performance goals. The performance factor for awards granted in 2019 was lowered to 0 percent based upon a comparison of actual results for 2019 to performance goals. The performance factor for awards granted in 2020 was increased to 138.5 percent based upon a comparison of actual results for 2020 to performance goals. (4) The aggregate grant date fair value of performance share unit awards issued during 2019 was $0.3 million based on a grant date market price of our common shares of $34.00 per share and assuming a performance factor of 100 percent. (5) The aggregate grant date fair value of performance share unit awards issued during 2020 was $0.2 million based on grant date market prices of our common shares ranging from $24.77 to $26.23 per share and assuming a performance factor of 100 percent. Unrecognized compensation cost associated with performance share unit awards was approximately $0.3 million at December 31, 2020. We expect to recognize the remaining compensation cost for these awards over a weighted-average period of 2.1 years.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
Supplemental Cash Flow Information	Dec. 31, 2020
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information Supplemental cash flows and non-cash transactions were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Cash paid for interest $ 444 $ 636 $ 109 Cash paid for federal and state income taxes 418 234 787 Cash refund for NOL carryback under CARES Act 2,703 — — Non-cash transactions: Change in accounts payable related to property and equipment additions (1,237) (448) 1685 Property and equipment acquired under finance leases 11,412 4,148 2,898 Issuance of common shares in asset acquisition (see Note 6) — 392 — Receivable for sale of property and equipment — 952 —

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2020
Leases [Abstract]
Leases	Leases Adoption of ASC 842 In February 2016, the Financial Accounting Standards Board issued Accounting Standards Codification 842, Leases (“ASC 842”), which requires lessees to recognize a ROU asset and a corresponding lease liability for leases with terms longer than twelve months. We adopted the new standard effective January 1, 2019, using a modified retrospective transition method and applied certain optional transitional practical expedients. We elected an optional transition method that allowed application of the new standard at the adoption date and the recognition of a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption with no adjustment to previously reported results. In accordance with this approach, our consolidated financial statements for periods prior to January 1, 2019 were not revised to reflect the new lease accounting guidance. We also elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed the carry forward of historical lease classification. We did not elect the practical expedient related to hindsight. ASC 842 changes the way our operating leases are recorded, presented and disclosed in our consolidated financial statements. Upon adoption of ASC 842 on January 1, 2019, we recognized a ROU asset and a corresponding lease liability based on the present value of then existing operating lease obligations of approximately $11.4 million on our consolidated balance sheet. In addition, there are several key accounting policy elections that we made upon adoption of ASC 842 including: • We did not recognize ROU assets and lease liabilities for short-term leases and instead record them in a manner similar to operating leases under ASC 840, Leases , lease accounting guidelines. A short term lease is one with a maximum lease term of 12 months or less and does not include a purchase option or renewal option the lessee is reasonably certain to exercise. • We have also elected the non-lease component practical expedient for any asset class where lease and non-lease components are comingled and the non-lease component is determined to be insignificant when compared to the lease component. Lease Recognition We determine if an arrangement is a lease at inception. Operating leases are included in operating lease ROU assets, current liabilities and long-term operating lease liabilities in the consolidated balance sheets. Finance leases are included in property and equipment, current liabilities and long-term finance lease liabilities in the consolidated balance sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. For determining the present value of lease payments, we use the discount rate implicit in the lease when readily determinable. As most of our leases do not provide an implicit rate, we use an incremental borrowing rate in determining the present value of lease payments that approximates the rate of interest we would have to pay to borrow on a collateralized basis over a similar term. At adoption, the ROU asset also includes any lease payment made and excludes lease incentives and initial direct costs. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. We are a lessee in noncancellable (i) operating leases for office space, equipment and lease and terminal access contracts for tank storage and dock access for our crude oil marketing business, and (ii) finance leases for tractors, trailers, a tank storage and throughput arrangement in our crude oil marketing business and office equipment. Leases with an initial term of twelve months or less are not recorded on the balance sheet. Our lease agreements have remaining lease terms ranging from one year to approximately eight years. Four of our finance lease agreements for tractors and trailers contain residual value guarantee provisions, which would become due at the expiration of the finance lease if the fair value of the lease vehicles is less than the guaranteed residual value. At December 31, 2020, we have recorded a liability of $1.8 million for the estimated end of term loss related to these residual value guarantees as we expect that we will pay the full amount of the guarantees at the end of the leases. Our lease agreements do not contain any leases with variable lease payments (i.e., payments that depend on a percentage of sales of a lessee or payments that increase based upon an index such as CPI), residual value guarantees probable of being paid other than those noted above or material restrictive covenants. Lease agreements with lease and non-lease components are generally accounted for separately when practical. For leases where the lease and non-lease component are comingled and the non-lease component is determined to be insignificant when compared to the lease component, the lease and the non-lease components are treated as a single lease component for all asset classes. Some leases include one or more options to renew, with renewal terms that can extend the lease term for generally one year with exercise of lease renewal options being at our sole discretion as lessee. The following table provides the components of lease expense the periods indicated (in thousands): Year Ended December 31, 2020 2019 Finance lease cost: Amortization of ROU assets $ 2,547 $ 1,807 Interest on lease liabilities 300 295 Operating lease cost 2,718 2,933 Short-term lease cost 11,020 9,627 Total lease expense $ 16,585 $ 14,662 The following table provides supplemental cash flow and other information related to leases for the periods indicated (in thousands): Year Ended December 31, 2020 2019 Cash paid for amounts included in measurement of lease liabilities: Operating cash flows from operating leases (1) $ 2,717 $ 2,934 Operating cash flows from finance leases 291 295 Financing cash flows from finance leases 2,336 1,697 ROU assets obtained in exchange for new lease liabilities: Finance leases (2) 11,412 4,148 Operating leases 819 12,006 ______________ (1) Amounts are included in Other operating activities on the consolidated cash flow statements. (2) 2020 amount consists of a finance lease agreements for 58 tractors with five six The following table provides the lease terms and discount rates for the periods indicated: Year Ended December 31, 2020 2019 Weighted-average remaining lease term (years): Finance leases 4.16 3.03 Operating leases 4.57 4.78 Weighted-average discount rate: Finance leases 3.0 % 4.9 % Operating leases 4.3 % 5.0 % The following table provides supplemental balance sheet information related to leases at the dates indicated (in thousands): December 31, 2020 2019 Assets Finance lease ROU assets (1) $ 15,251 $ 6,384 Operating lease ROU assets 8,051 9,576 Liabilities Current Finance lease liabilities 4,112 2,167 Operating lease liabilities 2,050 2,252 Noncurrent Finance lease liabilities 11,507 4,376 Operating lease liabilities 6,000 7,323 ______________ (1) Amounts are included in Property and equipment, net on the consolidated balance sheets. The following table provides maturities of undiscounted lease liabilities at December 31, 2020 (in thousands): Finance Operating Lease Lease 2021 $ 4,496 $ 2,343 2022 3,562 2,002 2023 2,764 1,821 2024 1,969 1,700 2025 2,992 222 Thereafter 802 675 Total lease payments 16,585 8,763 Less: Interest (966) (713) Present value of lease liabilities 15,619 8,050 Less: Current portion of lease obligation (4,112) (2,050) Total long-term lease obligation $ 11,507 $ 6,000 The following table provides maturities of undiscounted lease liabilities at December 31, 2019 (in thousands): Finance Operating Lease Lease 2020 $ 2,426 $ 2,660 2021 2,426 2,256 2022 1,492 1,914 2023 642 1,776 2024 37 1,668 Thereafter — 443 Total lease payments 7,023 10,717 Less: Interest (480) (1,142) Present value of lease liabilities 6,543 9,575 Less: Current portion of lease obligation (2,167) (2,252) Total long-term lease obligation $ 4,376 $ 7,323
Leases	Leases Adoption of ASC 842 In February 2016, the Financial Accounting Standards Board issued Accounting Standards Codification 842, Leases (“ASC 842”), which requires lessees to recognize a ROU asset and a corresponding lease liability for leases with terms longer than twelve months. We adopted the new standard effective January 1, 2019, using a modified retrospective transition method and applied certain optional transitional practical expedients. We elected an optional transition method that allowed application of the new standard at the adoption date and the recognition of a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption with no adjustment to previously reported results. In accordance with this approach, our consolidated financial statements for periods prior to January 1, 2019 were not revised to reflect the new lease accounting guidance. We also elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed the carry forward of historical lease classification. We did not elect the practical expedient related to hindsight. ASC 842 changes the way our operating leases are recorded, presented and disclosed in our consolidated financial statements. Upon adoption of ASC 842 on January 1, 2019, we recognized a ROU asset and a corresponding lease liability based on the present value of then existing operating lease obligations of approximately $11.4 million on our consolidated balance sheet. In addition, there are several key accounting policy elections that we made upon adoption of ASC 842 including: • We did not recognize ROU assets and lease liabilities for short-term leases and instead record them in a manner similar to operating leases under ASC 840, Leases , lease accounting guidelines. A short term lease is one with a maximum lease term of 12 months or less and does not include a purchase option or renewal option the lessee is reasonably certain to exercise. • We have also elected the non-lease component practical expedient for any asset class where lease and non-lease components are comingled and the non-lease component is determined to be insignificant when compared to the lease component. Lease Recognition We determine if an arrangement is a lease at inception. Operating leases are included in operating lease ROU assets, current liabilities and long-term operating lease liabilities in the consolidated balance sheets. Finance leases are included in property and equipment, current liabilities and long-term finance lease liabilities in the consolidated balance sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. For determining the present value of lease payments, we use the discount rate implicit in the lease when readily determinable. As most of our leases do not provide an implicit rate, we use an incremental borrowing rate in determining the present value of lease payments that approximates the rate of interest we would have to pay to borrow on a collateralized basis over a similar term. At adoption, the ROU asset also includes any lease payment made and excludes lease incentives and initial direct costs. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. We are a lessee in noncancellable (i) operating leases for office space, equipment and lease and terminal access contracts for tank storage and dock access for our crude oil marketing business, and (ii) finance leases for tractors, trailers, a tank storage and throughput arrangement in our crude oil marketing business and office equipment. Leases with an initial term of twelve months or less are not recorded on the balance sheet. Our lease agreements have remaining lease terms ranging from one year to approximately eight years. Four of our finance lease agreements for tractors and trailers contain residual value guarantee provisions, which would become due at the expiration of the finance lease if the fair value of the lease vehicles is less than the guaranteed residual value. At December 31, 2020, we have recorded a liability of $1.8 million for the estimated end of term loss related to these residual value guarantees as we expect that we will pay the full amount of the guarantees at the end of the leases. Our lease agreements do not contain any leases with variable lease payments (i.e., payments that depend on a percentage of sales of a lessee or payments that increase based upon an index such as CPI), residual value guarantees probable of being paid other than those noted above or material restrictive covenants. Lease agreements with lease and non-lease components are generally accounted for separately when practical. For leases where the lease and non-lease component are comingled and the non-lease component is determined to be insignificant when compared to the lease component, the lease and the non-lease components are treated as a single lease component for all asset classes. Some leases include one or more options to renew, with renewal terms that can extend the lease term for generally one year with exercise of lease renewal options being at our sole discretion as lessee. The following table provides the components of lease expense the periods indicated (in thousands): Year Ended December 31, 2020 2019 Finance lease cost: Amortization of ROU assets $ 2,547 $ 1,807 Interest on lease liabilities 300 295 Operating lease cost 2,718 2,933 Short-term lease cost 11,020 9,627 Total lease expense $ 16,585 $ 14,662 The following table provides supplemental cash flow and other information related to leases for the periods indicated (in thousands): Year Ended December 31, 2020 2019 Cash paid for amounts included in measurement of lease liabilities: Operating cash flows from operating leases (1) $ 2,717 $ 2,934 Operating cash flows from finance leases 291 295 Financing cash flows from finance leases 2,336 1,697 ROU assets obtained in exchange for new lease liabilities: Finance leases (2) 11,412 4,148 Operating leases 819 12,006 ______________ (1) Amounts are included in Other operating activities on the consolidated cash flow statements. (2) 2020 amount consists of a finance lease agreements for 58 tractors with five six The following table provides the lease terms and discount rates for the periods indicated: Year Ended December 31, 2020 2019 Weighted-average remaining lease term (years): Finance leases 4.16 3.03 Operating leases 4.57 4.78 Weighted-average discount rate: Finance leases 3.0 % 4.9 % Operating leases 4.3 % 5.0 % The following table provides supplemental balance sheet information related to leases at the dates indicated (in thousands): December 31, 2020 2019 Assets Finance lease ROU assets (1) $ 15,251 $ 6,384 Operating lease ROU assets 8,051 9,576 Liabilities Current Finance lease liabilities 4,112 2,167 Operating lease liabilities 2,050 2,252 Noncurrent Finance lease liabilities 11,507 4,376 Operating lease liabilities 6,000 7,323 ______________ (1) Amounts are included in Property and equipment, net on the consolidated balance sheets. The following table provides maturities of undiscounted lease liabilities at December 31, 2020 (in thousands): Finance Operating Lease Lease 2021 $ 4,496 $ 2,343 2022 3,562 2,002 2023 2,764 1,821 2024 1,969 1,700 2025 2,992 222 Thereafter 802 675 Total lease payments 16,585 8,763 Less: Interest (966) (713) Present value of lease liabilities 15,619 8,050 Less: Current portion of lease obligation (4,112) (2,050) Total long-term lease obligation $ 11,507 $ 6,000 The following table provides maturities of undiscounted lease liabilities at December 31, 2019 (in thousands): Finance Operating Lease Lease 2020 $ 2,426 $ 2,660 2021 2,426 2,256 2022 1,492 1,914 2023 642 1,776 2024 37 1,668 Thereafter — 443 Total lease payments 7,023 10,717 Less: Interest (480) (1,142) Present value of lease liabilities 6,543 9,575 Less: Current portion of lease obligation (2,167) (2,252) Total long-term lease obligation $ 4,376 $ 7,323

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Insurance We have accrued liabilities for estimated workers’ compensation and other casualty claims incurred based upon claim reserves plus an estimate for loss development and incurred but not reported claims. We self-insure a significant portion of expected losses relating to workers’ compensation, general liability and automobile liability, with a self-insured retention of $1.0 million. Insurance is purchased over our retention to reduce our exposure to catastrophic events. We also share 20 percent of the risk of loss, capped at $1.0 million for any claims in excess of $5.0 million. Estimates are recorded for potential and incurred outstanding liabilities for workers’ compensation, auto and general liability claims and claims that are incurred but not reported. Estimates are based on adjusters’ estimates, historical experience and statistical methods commonly used within the insurance industry that we believe are reliable. We have also engaged a third-party actuary to perform a review of our accrued liability for these claims as well as potential funded losses in our captive insurance company. Insurance estimates include certain assumptions and management judgments regarding the frequency and severity of claims, claim development and settlement practices and the selection of estimated loss among estimates derived using different methods. Unanticipated changes in these factors may produce materially different amounts of expense that would be reported under these programs. On October 1, 2020, we elected to utilize a wholly owned insurance captive to insure the self-insured retention for our workers’ compensation, general liability and automobile liability insurance programs. All accrued liabilities associated with periods from October 1, 2017 through current were transferred to the captive. We maintain excess property and casualty reinsurance programs with third-party insurers in an effort to limit the financial impact of significant events covered under these programs. Our operating subsidiaries pay premiums to both the excess and reinsurance carriers and our captive for the estimated losses based on an external actuarial analysis. These premiums held by our wholly owned captive are currently held in a restricted account, resulting in a transfer of risk from our operating subsidiaries to the captive. We also maintain a self-insurance program for managing employee medical claims in excess of employee deductibles. As claims are paid, the liability is relieved. We also maintain third party insurance stop-loss coverage for individual medical claims exceeding a certain minimum threshold . In addition, we maintain $1.4 million of umbrella insurance coverage for annual aggregate medical claims exceeding approximately $7.5 million. Our accruals for automobile, workers’ compensation and medical claims were as follows at the dates indicated (in thousands): December 31, 2020 2019 Pre-funded premiums for losses incurred but not reported $ 55 $ 168 Accrued automobile and workers’ compensation claims 3,171 2,956 Accrued medical claims 915 1,016 Legal Proceedings On August 15, 2019, we received a notice from the Internal Revenue Service (the “IRS”) regarding a proposed penalty of approximately $1.2 million for our 2017 tax year information returns. The notice alleged that certain taxpayer identification numbers supplied to the IRS for our returns in 2017 were either missing or incorrect and that certain filings were late. We responded to the IRS on September 25, 2019 disputing the proposed penalty and requested that the amount be waived, abated or a hearing held. On March 11, 2020, we received a response from the IRS indicating that they had reviewed our response and waived the full penalty. As such, this matter will not have a material impact on our consolidated financial position, results of operations or cash flows. Litigation From time to time as incidental to our operations, we may become involved in various lawsuits and/or disputes. Primarily as an operator of an extensive trucking fleet, we are a party to motor vehicle accidents, worker compensation claims and other items of general liability as would be typical for the industry. We are presently unaware of any claims against us that are either outside the scope of insurance coverage or that may exceed the level of insurance coverage and could potentially represent a material adverse effect on our financial position, results of operations or cash flows. Guarantees We issue parent guarantees of commitments associated with the activities of our subsidiary companies. The guarantees generally result from subsidiary commodity purchase obligations, subsidiary operating lease commitments and subsidiary banking transactions. The nature of these arrangements is to guarantee the performance of the subsidiary in meeting their respective underlying obligations. We would only be called upon to perform under the guarantee in the event of a payment default by the applicable subsidiary company. In satisfying these obligations, we would first look to the assets of the defaulting subsidiary company. At December 31, 2020, parental guaranteed obligations were approximately $24.1 million. Currently, neither we nor any of our subsidiaries has any other types of guarantees outstanding that require liability recognition, except for the residual value guarantees for certain of our finance leases (see Note 16 for further discussion).

Concentration of Credit Risk

Concentration of Credit Risk	12 Months Ended
Concentration of Credit Risk	Dec. 31, 2020
Risks and Uncertainties [Abstract]
Concentration of Credit Risk	Concentration of Credit Risk We may incur credit risk to the extent our customers do not fulfill their obligations to us pursuant to contractual terms. Risks of nonpayment and nonperformance by our customers are a major consideration in our business, and our credit procedures and policies may not be adequate to sufficiently eliminate customer credit risk. Managing credit risk involves a number of considerations, such as the financial profile of the customer, the value of collateral held, if any, specific terms and duration of the contractual agreement, and the customer’s sensitivity to economic developments. We have established various procedures to manage credit exposure, including initial credit approval, credit limits and rights of offset. We also utilize letters of credit and guarantees to limit exposure. Our largest customers consist of large multinational integrated crude oil companies and independent domestic refiners of crude oil. In addition, we transact business with independent crude oil producers, major chemical companies, crude oil trading companies and a variety of commercial energy users. Within this group of customers, we derive approximately 50 percent of our revenues from three to five large crude oil refining customers. While we have ongoing established relationships with certain domestic refiners of crude oil, alternative markets are readily available since we supply less than one percent of U.S. domestic refiner demand. As a fungible commodity delivered to major Gulf Coast supply points, our crude oil sales can be readily delivered to alternative end markets. The following tables reflect the percentages of individual customer sales in excess of 10 percent of our consolidated revenues and individual customer receivables in excess of 10 percent of our total consolidated receivables for the periods indicated. We believe that a loss of any of the customers where we currently derive more than 10 percent of our revenues would not have a material adverse effect on our operations. Individual customer sales Individual customer receivables in excess in excess of 10% of revenues of 10% of total receivables Year Ended December 31, December 31, 2020 2019 2018 2020 2019 2018 24.0 % 37.3 % 27.3 % 11.3 % 16.6 % 18.4 % 10.8 % 11.4 % 14.1 % 10.9 % 12.6 % 11.9 % 10.7 % 10.4 %

Quarterly Financial Information

Quarterly Financial Information (Unaudited)	12 Months Ended
Quarterly Financial Information (Unaudited)	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information (Unaudited)	Quarterly Financial Information (Unaudited) The following table presents selected quarterly financial data for the periods indicated (in thousands, except per share data): First Second Third Fourth Quarter Quarter Quarter Quarter Year Ended December 31, 2020 Revenues $ 353,477 $ 152,286 $ 266,904 $ 249,755 Operating (losses) earnings (1) (19,940) 2,935 6,056 5,202 Net (losses) earnings (11,427) 3,503 3,073 5,846 Earnings (losses) per share: (2) Basic net (losses) earnings per share $ (2.70) $ 0.83 $ 0.72 $ 1.38 Diluted net (losses) earnings per share $ (2.69) $ 0.82 $ 0.72 $ 1.37 Year Ended December 31, 2019 Revenues $ 445,168 $ 484,433 $ 450,307 $ 431,339 Operating earnings (losses) 5,253 (643) 303 2,887 Net earnings 4,908 6 640 2,653 Earnings per share: Basic net earnings per share $ 1.16 $ — $ 0.15 $ 0.63 Diluted net earnings per share $ 1.16 $ — $ 0.15 $ 0.63 ____________________ (1) The first quarter of 2020 includes inventory valuation losses of approximately $24.2 million in our crude oil marketing segment.

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]
Consolidation	Adams Resources & Energy, Inc. is a publicly traded Delaware corporation organized in 1973, the common shares of which are listed on the NYSE American LLC under the ticker symbol “AE”. Through our subsidiaries, we are primarily engaged in crude oil marketing, transportation, terminalling and storage in various crude oil and natural gas basins in the lower 48 states of the United States (“U.S.”). We also conduct tank truck transportation of liquid chemicals, pressurized gases, asphalt and dry bulk primarily in the lower 48 states of the U.S. with deliveries into Canada and Mexico, and with fifteen terminals across the U.S. Unless the context requires otherwise, references to “we,” “us,” “our” or the “Company” are intended to mean the business and operations of Adams Resources & Energy, Inc. and its consolidated subsidiaries. We operate and report in three business segments: (i) crude oil marketing, transportation and storage; (ii) tank truck transportation of liquid chemicals, pressurized gases, asphalt and dry bulk; and (iii) beginning in the fourth quarter of 2020, pipeline transportation, terminalling and storage of crude oil, which includes the pipeline and related terminal facility assets we acquired in October 2020 (see Note 6 for further information regarding our acquisition). See Note 9 for further information regarding our business segments. The consolidated financial statements and the accompanying notes are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and the rules of the U.S. Securities and Exchange Commission (“SEC”). All significant intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of our financial statements in conformity with GAAP requires management to use estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. We base our estimates and judgments on historical experience and on various other assumptions and information we believe to be reasonable under the circumstances. Estimates and assumptions about future events and their effects cannot be perceived with certainty and, accordingly, these estimates may change as new events occur, as more experience is acquired, as additional information is obtained and as the operating environment changes. While we believe the estimates and assumptions used in the preparation of the consolidated financial statements are appropriate, actual results could differ from those estimates.
Accounts Receivable and Allowance for Doubtful Accounts	Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable associated with crude oil marketing activities comprise approximately 90 percent of our total receivables, and industry practice requires payment for these sales to occur within 20 days of the end of the month following a transaction. Our customer makeup, credit policies and the relatively short duration of receivables mitigate the uncertainty typically associated with receivables management. We manage our crude oil marketing receivables by participating in a monthly settlement process with each of our counterparties. Ongoing account balances are monitored monthly, and we reconcile outstanding balances with counterparties. We also place great emphasis on collecting cash balances due.
Cash and Cash Equivalents	Cash and cash equivalents represent unrestricted cash on hand and highly liquid investments with original maturities of less than three months from the date of purchase. Cash and cash equivalents are maintained with major financial institutions, and deposit amounts may exceed the amount of federally backed insurance provided. While we regularly monitor the financial stability of these institutions, cash and cash equivalents ultimately remain at risk subject to the financial viability of these institutions.
Restricted Cash	At December 31, 2020 and 2019, $5.1 million and $9.3 million, respectively, of the restricted cash balance represents amounts held in a segregated bank account by Wells Fargo as collateral for outstanding letters of credit. At December 31, 2020, $1.5 million of the restricted cash balance relates to the initial capitalization of our newly formed captive insurance company and $6.1 million represents the amount paid to our captive insurance company for insurance premiums.
Derivative Instruments	Derivative Instruments In the normal course of our operations, our crude oil marketing segment purchases and sells crude oil. We seek to profit by procuring the commodity as it is produced and then delivering the product to the end users or the intermediate use marketplace. As typical for the industry, these transactions are made pursuant to the terms of forward month commodity purchase and/or sale contracts. Some of these contracts meet the definition of a derivative instrument, and therefore, we account for these contracts at fair value, unless the normal purchase and sale exception is applicable. These types of underlying contracts are standard for the industry and are the governing document for our crude oil marketing segment. None of our derivative instruments have been designated as hedging instruments.
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing our net earnings by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share is computed by giving effect to all potential shares of common stock outstanding, including our stock related to unvested restricted stock unit awards. Unvested restricted stock unit awards granted under the Adams Resources & Energy, Inc. 2018 Long-Term Incentive Plan (“2018 LTIP”) are not considered to be participating securities as the holders of these shares do not have non-forfeitable dividend rights in the event of our declaration of a dividend for common shares (see Note 14 for further discussion).
Fair Value Measurements	Fair Value Measurements The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents, accounts receivable and accounts payable approximates fair value because of the immediate or short-term maturity of these financial instruments. Marketable securities are recorded at fair value based on market quotations from actively traded liquid markets. Our fair value estimates are based on either (i) actual market data or (ii) assumptions that other market participants would use in pricing an asset or liability, including estimates of risk, in the principal market of the asset or liability at a specified measurement date. Recognized valuation techniques employ inputs such as contractual prices, quoted market prices or rates, operating costs, discount factors and business growth rates. These inputs may be either readily observable, corroborated by market data or generally unobservable. In developing our estimates of fair value, we endeavor to utilize the best information available and apply market-based data to the highest extent possible. Accordingly, we utilize valuation techniques (such as the market approach) that maximize the use of observable inputs and minimize the use of unobservable inputs. A three-tier hierarchy has been established that classifies fair value amounts recognized in the financial statements based on the observability of inputs used to estimate such fair values. The hierarchy considers fair value amounts based on observable inputs (Levels 1 and 2) to be more reliable and predictable than those based primarily on unobservable inputs (Level 3). At each balance sheet reporting date, we categorize our financial assets and liabilities using this hierarchy. The characteristics of the fair value amounts classified within each level of the hierarchy are described as follows: • Level 1 fair values are based on quoted prices, which are available in active markets for identical assets or liabilities as of the measurement date. Active markets are defined as those in which transactions for identical assets or liabilities occur with sufficient frequency so as to provide pricing information on an ongoing basis. For Level 1 valuation of marketable securities, we utilize market quotations provided by our primary financial institution. For the valuations of derivative financial instruments, we utilize the New York Mercantile Exchange (“NYMEX”) for certain commodity valuations. • Level 2 fair values are based on (a) quoted prices for similar assets or liabilities in active markets, (b) quoted prices for identical assets or liabilities but in markets that are not actively traded or in which little information is released to the public, (c) observable inputs other than quoted prices, and (d) inputs derived from observable market data. Source data for Level 2 inputs include information provided by the NYMEX, published price data and indices, third party price survey data and broker provided forward price statistics. • Level 3 fair values are based on unobservable market data inputs for assets or liabilities. See Note 6 for a discussion of the Level 3 inputs used in the determination of the fair value of the intangible assets acquired in asset acquisitions. Fair value contracts consist of derivative financial instruments and are recorded as either an asset or liability measured at its fair value. Changes in fair value are recognized immediately in earnings unless the derivatives qualify for, and we elect, cash flow hedge accounting. We had no contracts designated for hedge accounting during any of the current reporting periods (see Note 12 for further information).
Impairment Testing for Long-Lived Assets	Impairment Testing for Long-Lived AssetsLong-lived assets (primarily property and equipment and intangible assets) are reviewed for impairment when events or changes in circumstances indicate that the carrying amount of these assets may not be recoverable. Long-lived assets with carrying values that are not expected to be recovered through future cash flows are written-down to their estimated fair values. The carrying value of a long-lived asset is deemed not recoverable if it exceeds the sum of undiscounted cash flows expected to result from the use and eventual disposition of the asset. If the asset’s carrying value exceeds the sum of its undiscounted cash flows, a non-cash asset impairment charge equal to the excess of the asset’s carrying value over its estimated fair value is recorded. Fair value is defined as the price that would be received to sell an asset or be paid to transfer a liability in an orderly transaction between market participants at a specified measurement date. We measure fair value using market price indicators or, in the absence of such data, appropriate valuation techniques.
Income Taxes	Income Taxes Income taxes are accounted for using the asset and liability method. Under this approach, deferred tax assets and liabilities are recognized based on anticipated future tax consequences attributable to differences between financial statement carrying amounts of such items and their respective tax basis (see Note 13 for further information). On December 22, 2017, the Tax Cut and Jobs Act was enacted into law resulting in a reduction in the federal corporate income tax rate from 35 percent to 21 percent for years beginning in 2018, which impacts our income tax provision or benefit. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was enacted and signed into law in response to the COVID-19 pandemic. The CARES Act, among other things, permits net operating losses (“NOL”) incurred in tax years 2018, 2019 and 2020 to offset 100 percent of taxable income and be carried back to each of the five preceding taxable years to generate a refund of previously paid income taxes.
Inventory	Inventory Inventory consists of crude oil held in storage tanks and at third-party pipelines as part of our crude oil marketing and pipeline and storage operations. Crude oil inventory is carried at the lower of cost or net realizable value. At the end of each reporting period, we assess the carrying value of our inventory and make adjustments necessary to reduce the carrying value to the applicable net realizable value. Any resulting adjustments are a component of marketing costs and expenses or pipeline and storage expenses on our consolidated statements of operations. During the years ended December 31, 2020 and 2018, we recorded a charge of $24.2 million and $5.4 million, respectively, related to the write-down of our crude oil inventory in our crude oil marketing segment due to declines in prices. There were no charges recognized during the year ended December 31, 2019.
Investment in Unconsolidated Affiliate	Investment in Unconsolidated AffiliateWe own an approximate 15 percent equity interest (less than 3 percent voting interest) in VestaCare, Inc., a California corporation (“VestaCare”), which we purchased for a $2.5 million cash payment in 2016. VestaCare provides an array of software as a service (SaaS) electronic payment technologies to medical providers, payers and patients including VestaCare’s product offering, VestaPay™. VestaPay™ allows medical care providers to structure fully automated and dynamically updating electronic payment plans for their patients. We account for this investment under the cost method of accounting. During 2017, we reviewed our investment in VestaCare and determined that the current projected operating results did not support the carrying value of the investment. As a result, during 2017, we recognized an impairment charge of $2.5 million to write-off our investment in VestaCare. At December 31, 2020, we continue to own an approximate 15 percent equity interest in VestaCare.
Property and Equipment	Property and Equipment Property and equipment is recorded at cost. Expenditures for additions, improvements and other enhancements to property and equipment are capitalized, and minor replacements, maintenance and repairs that do not extend asset life or add value are charged to expense as incurred. When property and equipment assets are retired or otherwise disposed of, the related cost and accumulated depreciation is removed from the accounts and any resulting gain or loss is included in results of operations in operating costs and expenses for the respective period. Property and equipment, except for land, is depreciated using the straight-line method over the estimated average useful lives of two thirty-nine Asset retirement obligations (“AROs”) are legal obligations associated with the retirement of tangible long-lived assets that result from their acquisition, construction, development and/or normal operation. When an ARO is incurred, we record a liability for the ARO and capitalize an equal amount as an increase in the carrying value of the related long-lived asset. ARO amounts are measured at their estimated fair value using expected present value techniques. Over time, the ARO liability is accreted to its present value (through accretion expense), and the capitalized amount is depreciated over the remaining useful life of the related long-lived asset. We will incur a gain or loss to the extent that our ARO liabilities are not settled at their recorded amounts.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”). This new standard eliminates certain exceptions in Accounting Standards Codification (“ASC”) 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period, and the recognition of deferred tax liabilities for outside basis differences. It also clarifies and simplifies other aspects of the accounting for income taxes. ASU 2019-12 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2020, with early adoption permitted in any interim period within that year. We elected to early adopt this standard during the period ended June 30, 2020, and most amendments within the standard were required to be applied on a prospective basis as of January 1, 2020, while certain amendments were applied on a retrospective or modified retrospective basis. The most significant impact to us is the removal of a limit on the tax benefit recognized on pre-tax losses in interim periods, which was required to be applied on a prospective basis. As a result of our adoption of ASU 2019-12, we calculated our quarterly income tax benefits based on ordinary losses incurred during the first and second quarters of 2020, no longer limiting the computed benefit if it exceeds the amount of benefit that would be recognized if the year-to-date ordinary loss were the anticipated ordinary loss for the full fiscal year.
Stock-Based Compensation	Stock-Based CompensationWe measure all share-based payment awards, including the issuance of restricted stock unit awards and performance share unit awards to employees and board members, using a fair-value based method. The cost of services received from employees and non-employee board members in exchange for awards of equity instruments is recognized in the consolidated statements of operations based on the estimated fair value of those awards on the grant date and is amortized on a straight-line basis over the requisite service period. The fair value of restricted stock unit awards and performance share unit awards is based on the closing price of our common stock on the grant date. We account for forfeitures as they occur.
Revenue Recognition	Adoption of ASC 606 On January 1, 2018, we adopted ASC 606, Revenue from Contracts with Customers (“ASC 606”) and all related Accounting Standards Updates by applying the modified retrospective method to all contracts that were not completed on January 1, 2018. The modified retrospective approach required us to recognize the cumulative effect of initially applying the new standard as an adjustment to the opening balance of retained earnings on January 1, 2018. Comparative information has not been restated and continues to be reported under the historical accounting standards in effect for those periods. The adoption of the new revenue standard did not result in a cumulative effect adjustment to our retained earnings since there was no significant impact upon adoption of the new standard. There was also no material impact to revenues, or any other financial statement line items for the year ended December 31, 2018 as a result of applying ASC 606. We expect the impact of the adoption of ASC 606 to remain immaterial to our net earnings on an ongoing basis. Revenue Recognition ASC 606’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The new revenue standard requires entities to recognize revenue through the application of a five-step model, which includes: identification of the contract; identification of the performance obligations; determination of the transaction price; allocation of the transaction price to the performance obligations; and recognition of revenue as the entity satisfies the performance obligations. Our revenues are primarily generated from the marketing, transportation, storage and terminalling of crude oil and other related products and the tank truck transportation of liquid chemicals, pressurized gases, asphalt and dry bulk. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in ASC 606. To identify the performance obligations, we considered all of the products or services promised in the contracts with customers, whether explicitly stated or implied based on customary business practices. Revenue is recognized when, or as, each performance obligation is satisfied under terms of the contract. Payment is typically due in full within 30 days of the invoice date. The following information describes the nature of our significant revenue streams by segment and type: Crude oil marketing segment . Crude oil marketing activities generate revenues from the sale and delivery of crude oil purchased either directly from producers or on the open market. Most of our crude oil purchase and sale contracts qualify and are designated as non-trading activities, and we consider these contracts as normal purchases and sales activity. For normal purchases and sales, our customers are invoiced monthly based upon contractually agreed upon terms with revenue recognized in the month in which the physical product is delivered to the customer, generally upon delivery of the product to the customer. Revenue is recognized based on the transaction price and the quantity delivered. The majority of our crude oil sales contracts have multiple distinct performance obligations as the promise to transfer the individual goods (e.g., barrels of crude oil) is separately identifiable from the other goods promised within the contracts. Our performance obligations are satisfied at a point in time. For normal sales arrangements, revenue is recognized in the month in which control of the physical product is transferred to the customer, generally upon delivery of the product to the customer. Transportation segment . Transportation activities generate revenue from the truck transportation of liquid chemicals, pressurized gases, asphalt or dry bulk from point A to point B for customers. Each sales order is associated with our master transportation agreements and is considered a distinct performance obligation. The performance obligations associated with this segment are satisfied over time as the goods and services are delivered. Pipeline and storage segment . Pipeline and storage activities generate revenue by transporting crude oil on our pipeline and providing storage and terminalling services for our customers. Our operations generally consist of fee-based activities associated with the transportation of crude oil and providing storage and terminalling services for crude oil. Revenues from pipeline tariffs and fees are associated with the transportation of crude oil at a published tariff. We primarily recognize pipeline tariff and fee revenues over time as services are rendered, based on the volumes transported. As is common in the pipeline transportation industry, our tariffs incorporate a loss allowance factor. We recognize the allowance volumes collected as part of the transaction price and record this non-cash consideration at fair value, measured as of the contract inception date. Storage fees are typically recognized in revenue ratably over the term of the contract regardless of the actual storage capacity utilized as our performance obligation is to make available storage capacity for a period of time. Terminalling fees are recognized as the crude oil enters or exits the terminal and is received from or delivered to the connecting carrier or third-party terminal, as applicable. Practical Expedients In connection with our adoption of ASC 606, we reviewed our revenue contracts for impact upon adoption. For example, our revenue contracts often include promises to transfer various goods and services to a customer. Determining whether goods and services are considered distinct performance obligations that should be accounted for separately versus together will continue to require continual assessment. We also used practical expedients permitted by ASC 606 when applicable. These practical expedients included: • Applying the new guidance only to contracts that were not completed as of January 1, 2018; and • Not accounting for the effects of significant financing components if the company expects that the period between when the entity transfers a promised good or service to a customer and when the customer pays for that good or service will be one year or less. Contract Balances Other Crude Oil Marketing Revenue Certain of the commodity purchase and sale contracts utilized by our crude oil marketing segment qualify as derivative instruments with certain specifically identified contracts also designated as trading activity. From the time of contract origination, these contracts are marked-to-market and recorded on a net revenue basis in the accompanying consolidated financial statements.
Asset Retirement Obligations	We record AROs for the estimated retirement costs associated with certain tangible long-lived assets. The estimated fair value of AROs are recorded in the period in which they are incurred and the corresponding cost is capitalized by increasing the carrying amount of the related long-lived asset. The liability is accreted to its then present value each period, and the capitalized cost is depreciated over the useful life of the asset. If the liability is settled for an amount other than the recorded amount, an increase or decrease to expense is recognized.
Other Assets	We have established certain deposits to support participation in our liability insurance program and remittance of state crude oil severance taxes and other state collateral deposits. Insurance collateral deposits are held by the insurance company to cover past or potential open claims based upon a percentage of the maximum assessment under our insurance policies. Insurance collateral deposits are invested at the discretion of our insurance carrier. Excess amounts in our loss fund represent premium payments in excess of claims incurred to date that we may be entitled to recover through settlement or commutation as claim periods are closed. Interest income is earned on the majority of amounts held by the insurance companies and will be paid to us upon settlement of policy years.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 31, 2020
Accounting Policies [Abstract]
Changes in the Allowance for Doubtful Accounts	The following table presents our allowance for doubtful accounts activity for the periods indicated (in thousands): December 31, 2020 2019 2018 Balance at beginning of period $ 141 $ 153 $ 303 Charges to costs and expenses — 26 43 Deductions (27) (38) (193) Balance at end of period $ 114 $ 141 $ 153
Summary of Cash and Cash Equivalents and Restricted Cash	The following table provides a reconciliation of cash and cash equivalents and restricted cash as reported in the consolidated balance sheets that totals to the amounts shown in the consolidated statements of cash flows at the dates indicated (in thousands): December 31, 2020 2019 Cash and cash equivalents $ 39,293 $ 112,994 Restricted cash 12,772 9,261 Total cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows $ 52,065 $ 122,255
Schedule of Common Stock	The following table reconciles our outstanding common stock for the periods indicated: Common shares Balance, December 31, 2017 and 2018 4,217,596 Issuance of shares in acquisition (see Note 6) 11,145 Vesting of restricted stock unit awards (see Note 14) 7,604 Shares withheld to cover taxes upon vesting of restricted stock unit awards (883) Other 71 Balance, December 31, 2019 4,235,533 Vesting of restricted stock unit awards (see Note 14) 10,290 Shares withheld to cover taxes upon vesting of restricted stock unit awards (2,107) Balance, December 31, 2020 4,243,716
Schedule of Earnings per Share, Basic and Diluted	A reconciliation of the calculation of basic and diluted earnings per share was as follows for the periods indicated (in thousands, except per share data): Year Ended December 31, 2020 2019 2018 Earnings per share – numerator: Net earnings $ 995 $ 8,207 $ 2,945 Denominator: Basic weighted average number of shares outstanding 4,240 4,228 4,218 Basic earnings per share $ 0.23 $ 1.94 $ 0.70 Diluted earnings per share: Diluted weighted average number of shares outstanding: Common shares 4,240 4,228 4,218 Restricted stock unit awards (1) 11 5 — Performance share unit awards (2) 3 — — Total 4,254 4,233 4,218 Diluted earnings per share $ 0.23 $ 1.94 $ 0.70 _______________ (1) The dilutive effect of restricted stock unit awards for the year ended December 31, 2018 is de minimis.
Schedule of Cost of Retirement Plans	Our 401(k) plan contributory expenses were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Contributory expenses $ 1,100 $ 1,117 $ 808

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
Revenue Recognition (Tables)	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table disaggregates our revenue by segment and by major source for the periods indicated (in thousands): Reporting Segments Marketing Transportation Pipeline and storage (1) Total Year Ended December 31, 2020 Revenues from contracts with customers $ 915,438 $ 71,724 $ 272 $ 987,434 Other (2) 34,988 — — 34,988 Total revenues $ 950,426 $ 71,724 $ 272 $ 1,022,422 Timing of revenue recognition: Goods transferred at a point in time $ 915,438 $ — $ — $ 915,438 Services transferred over time — 71,724 272 71,996 Total revenues from contracts with customers $ 915,438 $ 71,724 $ 272 $ 987,434 Year Ended December 31, 2019 Revenues from contracts with customers $ 1,555,393 $ 63,191 $ — $ 1,618,584 Other (2) 192,663 — — 192,663 Total revenues $ 1,748,056 $ 63,191 $ — $ 1,811,247 Timing of revenue recognition: Goods transferred at a point in time $ 1,555,393 $ — $ — $ 1,555,393 Services transferred over time — 63,191 — 63,191 Total revenues from contracts with customers $ 1,555,393 $ 63,191 $ — $ 1,618,584 Year Ended December 31, 2018 Revenues from contracts with customers $ 1,580,997 $ 55,776 $ — $ 1,636,773 Other (2) 113,440 — — 113,440 Total revenues $ 1,694,437 $ 55,776 $ — $ 1,750,213 Timing of revenue recognition: Goods transferred at a point in time $ 1,580,997 $ — $ — $ 1,580,997 Services transferred over time — 55,776 — 55,776 Total revenues from contracts with customers $ 1,580,997 $ 55,776 $ — $ 1,636,773 _______________ (1) On October 22, 2020, we acquired a crude oil pipeline and related terminal facility assets, resulting in a new operating segment. See Note 6 and Note 9 for further information. (2) Other crude oil marketing revenues are recognized under ASC 815, Derivatives and Hedging , and ASC 845, Nonmonetary Transactions – Purchases and Sales of Inventory with the Same Counterparty
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Reporting these crude oil contracts on a gross revenue basis would increase our reported revenues as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Revenue gross-up $ 419,127 $ 859,091 $ 448,846

Prepayments and Other Current_2

Prepayments and Other Current Assets (Tables)	12 Months Ended
Prepayments and Other Current Assets (Tables)	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepayments and Other Current Assets	The components of prepayments and other current assets were as follows at the dates indicated (in thousands): December 31, 2020 2019 Insurance premiums $ 690 $ 473 Vendor prepayment 1,085 — Rents, licenses and other 1,189 1,086 Total $ 2,964 $ 1,559

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
Property and Equipment (Tables)	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property and equipment	The historical costs of our property and equipment and related accumulated depreciation and amortization balances were as follows at the dates indicated (in thousands): Estimated Useful Life December 31, in Years 2020 2019 Tractors and trailers 5 – 6 $ 101,813 $ 110,153 Field equipment 2 – 5 22,139 21,780 Finance lease ROU assets (1) 3 – 6 20,266 8,854 Pipeline and related facilities 20 – 25 21,265 — Linefill and base gas (2) N/A 3,333 — Buildings 5 – 39 14,977 16,055 Office equipment 2 – 5 1,893 1,951 Land N/A 1,790 1,790 Construction in progress N/A 1,626 3,661 Total property and equipment, at cost 189,102 164,244 Less accumulated depreciation and amortization (94,968) (95,198) Property and equipment, net $ 94,134 $ 69,046 ______________ (1) Our finance lease right-of-use (“ROU”) assets arise from leasing arrangements for the right to use various classes of underlying assets including tractors, trailers, a tank storage and throughput arrangement and office equipment (see Note 16 for further information). Accumulated amortization of the assets presented as “Finance lease ROU assets” was $5.0 million and $2.5 million as of December 31, 2020 and 2019, respectively. (2) Linefill and base gas represents crude oil in the VEX pipeline (Note 6) and storage tanks we own, and the crude oil is recorded at historical cost. Components of depreciation and amortization expense were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Depreciation and amortization, excluding amounts under finance leases $ 16,026 $ 14,833 $ 10,112 Amortization of property and equipment under finance leases 2,547 1,808 542 Total depreciation and amortization $ 18,573 $ 16,641 $ 10,654
Pre-tax gain on the sale of equipment	We sold certain used tractors, trailers and other equipment and recorded net pre-tax gains as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Gains on sales of used tractors, trailers and equipment $ 1,859 $ 1,400 $ 1,240
Company's asset retirement obligations	The following table reflects a summary of our AROs for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 ARO liability at beginning of year $ 1,573 $ 1,525 $ 1,273 Liabilities incurred — 17 252 Accretion of discount 49 48 36 Liabilities settled (38) (17) (36) AROs related to pipeline acquisition (see Note 6) 723 — — ARO liability at end of year $ 2,307 $ 1,573 $ 1,525

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
Acquisitions (Tables)	Dec. 31, 2020
Asset Acquisition [Abstract]
Schedule of Asset Acquisition	The following table summarizes the allocation of the purchase price based on the estimated fair value of the assets and liabilities acquired at the acquisition date (in thousands): Accounts receivable and other current assets $ 80 Linefill and base gas 1,013 Property and equipment — Pipeline and related terminal facilities 20,542 Accounts payable and other accrued liabilities (598) Total purchase price $ 21,037 The following table summarizes the allocation of the purchase price based on the estimated fair value of the assets acquired at the acquisition date (in thousands): Property and equipment — tractors and trailers $ 5,901 Materials and supplies 87 Intangible assets — customer relationships 3,175 Total purchase price $ 9,163 The following table summarizes the consideration paid for the EH Transport assets and the estimated fair value of the assets acquired at the acquisition date (in thousands): Consideration: Cash $ 5,624 Value of AE common shares issued 392 Contingent consideration arrangement 431 Fair value of total consideration transferred $ 6,447 Recognized amounts of identifiable assets acquired: Property and equipment — tractors and trailers $ 4,576 Shop, office and telecommunication equipment 20 Intangible assets — customer relationships 1,851 Total purchase price $ 6,447 Tractors $ 4,799 Trailers 4,901 Field equipment 381 Materials and supplies 191 Total purchase price $ 10,272

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
Other Assets (Tables)	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of other assets	Components of other assets were as follows at the dates indicated (in thousands): December 31, 2020 2019 Amounts associated with liability insurance program: Insurance collateral deposits $ 714 $ 1,233 Excess loss fund 617 943 Accumulated interest income 449 609 Other amounts: State collateral deposits 31 37 Materials and supplies 488 477 Other 84 — Total $ 2,383 $ 3,299

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
Intangible Assets (Tables)	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The following table summarizes our intangible assets at the dates indicated (in thousands): December 31, 2020 December 31, 2019 Gross Accumulated Gross Accumulated Value Amortization Net Value Amortization Net Customer relationships: EH Transport acquisition $ 1,703 $ (500) $ 1,203 $ 1,808 $ (211) $ 1,597 CTL acquisition 3,173 (270) 2,903 — — — Intangible assets, net $ 4,876 $ (770) $ 4,106 $ 1,808 $ (211) $ 1,597
Schedule of Future Amortization Expense	The following table presents our forecast of amortization expense associated with these intangible assets for the years indicated (in thousands): 2021 2022 2023 2024 2025 EH Transport acquisition $ 274 $ 254 $ 235 $ 218 $ 202 CTL acquisition 524 492 460 428 413 Total $ 798 $ 746 $ 695 $ 646 $ 615

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
Segment Reporting (Tables)	Dec. 31, 2020
Segment Reporting [Abstract]
Information Concerning Business Activities	Financial information by reporting segment was as follows for the periods indicated (in thousands): Reporting Segments Marketing Transportation Pipeline and storage Other Total Year Ended December 31, 2020 Revenues $ 950,426 $ 71,724 $ 272 $ — $ 1,022,422 Segment operating (losses) earnings (1) 2,974 1,873 (310) — 4,537 Depreciation and amortization 7,421 10,963 189 — 18,573 Property and equipment additions (2) (3) 3,130 1,355 — 523 5,008 Year Ended December 31, 2019 Revenues $ 1,748,056 $ 63,191 $ — $ — $ 1,811,247 Segment operating earnings (1) 16,099 1,899 — — 17,998 Depreciation and amortization 8,741 7,900 — — 16,641 Property and equipment additions (2) (3) 7,249 28,472 — 22 35,743 Year Ended December 31, 2018 Revenues $ 1,694,437 $ 55,776 $ — $ — $ 1,750,213 Segment operating earnings (1) 7,008 3,337 — — 10,345 Depreciation and amortization 6,384 4,270 — — 10,654 Property and equipment additions (2) (3) 1,540 10,178 — 13 11,731 _________________ (1) Our crude oil marketing segment’s operating earnings included inventory valuation losses of $15.0 million, inventory liquidation gains of $3.7 million, and inventory valuation losses of $5.4 million for the years ended December 31, 2020, 2019 and 2018, respectively. (2) Our segment property and equipment additions do not include assets acquired under finance leases during the years ended December 31, 2020, 2019 and 2018. See Note 16 for further information.
Reconciliation of Segment Earnings to Earnings Before Income Taxes	Segment operating earnings reflect revenues net of operating costs and depreciation and amortization expense and are reconciled to earnings (losses) before income taxes, as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Segment operating earnings $ 4,537 $ 17,998 $ 10,345 General and administrative (10,284) (10,198) (8,937) Operating earnings (5,747) 7,800 1,408 Gain on dissolution of investment — 573 — Interest income 656 2,766 2,155 Interest expense (444) (636) (109) (Losses) earnings before income taxes $ (5,535) $ 10,503 $ 3,454
Identifiable Assets by Industry Segment	Identifiable assets by industry segment were as follows at the dates indicated (in thousands): December 31, 2020 2019 2018 Reporting segment: Marketing $ 128,441 $ 141,402 $ 119,370 Transportation 72,247 58,483 34,112 Pipeline and storage 24,541 — — Cash and other (1) 70,958 130,957 125,388 Total assets $ 296,187 $ 330,842 $ 278,870 _________________ (1) Other identifiable assets are primarily corporate cash, corporate accounts receivable, properties and operating lease right-of-use assets not identified with any specific segment of our business.

Transactions with Affiliates (T

Transactions with Affiliates (Tables)	12 Months Ended
Transactions with Affiliates (Tables)	Dec. 31, 2020
Related Party Transactions [Abstract]
Schedule of activities with affiliates	Activities with affiliates were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Affiliate billings to us $ 18 $ 83 $ 75 Billings to affiliates 5 5 6 Rentals paid to affiliate 644 487 487

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	12 Months Ended
Other Current Liabilities (Tables)	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Schedule of Other Current Liabilities	The components of other current liabilities were as follows at the dates indicated (in thousands): December 31, 2020 2019 Accrued purchase price for VEX acquisition (see Note 6) $ 10,000 $ — Accrual for payroll, benefits and bonuses 6,575 2,301 Other 5,768 5,001 Total $ 22,343 $ 7,302

Derivative Instruments and Fa_2

Derivative Instruments and Fair Value Measurements (Tables)	12 Months Ended
Derivative Instruments and Fair Value Measurements (Tables)	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives Reflected in the Consolidated Balance Sheet	The estimated fair value of forward month commodity contracts (derivatives) reflected in the accompanying consolidated balance sheets were as follows at the dates indicated (in thousands): Balance Sheet Location and Amount Current Other Current Other December 31, 2020 Assets Assets Liabilities Liabilities Asset derivatives: Fair value forward hydrocarbon commodity contracts at gross valuation $ 61 $ — $ — $ — Liability derivatives: Fair value forward hydrocarbon commodity contracts at gross valuation — — 52 — Less counterparty offsets — — — — As reported fair value contracts $ 61 $ — $ 52 $ — December 31, 2019 Asset derivatives: Fair value forward hydrocarbon commodity contracts at gross valuation $ $ — $ — $ — Liability derivatives: Fair value forward hydrocarbon commodity contracts at gross valuation — — — — Less counterparty offsets — — — — As reported fair value contracts $ — $ — $ — $ —
Derivatives Reflected in the Consolidated Statement of Operations	Forward month commodity contracts (derivatives) reflected in the accompanying consolidated statements of operations were as follows for the periods indicated (in thousands): Gains (Losses) Year Ended December 31, 2020 2019 2018 Revenues – marketing $ 9 $ (24) $ 2
Fair Value Assets and Liabilities	The following table reflects, by level with the Level 1, 2 and 3 fair value hierarchy, the carrying values of our financial assets and liabilities at the dates indicated (in thousands): Fair Value Measurements Using Quoted Prices in Active Significant Markets for Other Significant Identical Assets Observable Unobservable and Liabilities Inputs Inputs Counterparty (Level 1) (Level 2) (Level 3) Offsets Total December 31, 2020 Derivatives: Current assets $ — $ 61 $ — $ — $ 61 Current liabilities — (52) — — (52) Net value $ — $ 9 $ — $ — $ 9 December 31, 2019 Derivatives: Current assets $ — $ — $ — $ — $ — Current liabilities — — — — — Net value $ — $ — $ — $ — $ —

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Components of the Company's Income Tax (Provision) Benefit	The components of our income tax (provision) benefit were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Current: Federal $ 13,246 $ 164 $ 388 State (327) (375) 39 Total current 12,919 (211) 427 Deferred: Federal (6,631) (2,063) (752) State 242 (22) (184) Total deferred (6,389) (2,085) (936) Total (provision for) benefit from income taxes $ 6,530 $ (2,296) $ (509)
Reconciliation of Taxes Computed at the Corporate Federal Income Tax Rate to the Reported Income Tax (Provision)	A reconciliation of the (provision for) benefit from income taxes with amounts determined by applying the statutory U.S. federal income tax rate to income before income taxes was as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Pre-tax net book income (loss) $ (5,535) $ 10,503 $ 3,454 Statutory federal income tax (provision) benefit $ 1,162 $ (2,206) $ (725) State income tax (provision) benefit (16) (397) (145) 2018/2019 carryback 2,664 — — 2020 carryback 2,642 — — Reverse valuation allowance — — 98 Return to provision adjustments 13 285 388 Other 65 22 (125) Total (provision for) benefit from income taxes $ 6,530 $ (2,296) $ (509) Effective income tax rate (1) 118 % 22 % 15 % _______________
Components of the Federal Deferred Tax Asset (Liability)	Deferred income taxes reflect the net difference between the financial statement carrying amounts and the underlying income tax basis in these items. The components of the federal deferred tax asset (liability) were as follows at the dates indicated (in thousands): December 31, 2020 2019 Long-term deferred tax asset (liability): Prepaid and other insurance $ (861) $ 248 Property (12,807) (9,953) Investment in unconsolidated affiliate 525 525 Valuation allowance related to investment in unconsolidated affiliate (525) (525) Net operating loss 536 3,567 Other 423 (184) Net long-term deferred tax liability (12,709) (6,322) Net deferred tax liability $ (12,709) $ (6,322)
Earliest Tax Years Remaining for Federal and Major States of Operations	The earliest tax years remaining open for audit for federal and major states of operations are as follows: Earliest Open Tax Year Federal 2013 Texas 2016 Louisiana 2017 Michigan 2016

Share-Based Compensation Plan (

Share-Based Compensation Plan (Tables)	12 Months Ended
Share-Based Compensation Plan (Tables)	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Payment Arrangement	Compensation expense recognized in connection with equity-based awards was as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Compensation expense $ 643 $ 478 $ 255
Share-based Compensation, Activity	The following table presents restricted stock unit award activity for the periods indicated: Weighted- Average Grant Number of Date Fair Value Shares per Share (1) Restricted stock unit awards at January 1, 2018 — $ — Granted (2) 13,733 $ 43.00 Vested — $ — Forfeited — $ — Restricted stock unit awards at December 31, 2018 13,733 $ 43.00 Granted (3) 14,376 $ 34.00 Vested (7,188) $ 41.90 Forfeited (2,139) $ 38.42 Restricted stock unit awards at December 31, 2019 18,782 $ 37.05 Granted (4) 20,346 $ 24.85 Vested (9,578) $ 36.36 Forfeited (2,060) $ 30.07 Restricted stock unit awards at December 31, 2020 27,490 $ 28.64 ____________________ (1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued. (2) The aggregate grant date fair value of restricted stock unit awards issued during 2018 was $0.6 million based on a grant date market price of our common shares of $43.00 per share. (3) The aggregate grant date fair value of restricted stock unit awards issued during 2019 was $0.5 million based on a grant date market price of our common shares of $34.00 per share. (4) The aggregate grant date fair value of restricted stock unit awards issued during 2020 was $0.5 million based on grant date market prices of our common shares ranging from $24.77 to $26.23 per share. The following table presents performance share unit award activity for the periods indicated: Weighted- Average Grant Number of Date Fair Value Shares per Share (1) Performance share unit awards at January 1, 2018 — $ — Granted (2) 7,932 $ 43.00 Performance factor decrease (3) (3,966) $ 43.00 Vested — $ — Forfeited — $ — Performance share unit awards at December 31, 2018 3,966 $ 43.00 Granted (4) 8,094 $ 34.00 Performance factor decrease (3) (7,312) $ 34.23 Vested (416) $ 43.00 Forfeited (1,545) $ 37.37 Performance share unit awards at December 31, 2019 2,787 $ 43.00 Granted (5) 10,781 $ 24.92 Performance factor increase (3) 3,981 $ 24.92 Vested (713) $ 28.55 Forfeited (595) $ 30.22 Performance share unit awards at December 31, 2020 16,241 $ 27.67 ____________________ (1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued. (2) The aggregate grant date fair value of performance share unit awards issued during 2018 was $0.2 million based on a grant date market price of our common shares of $43.00 per share and assuming a performance factor of 100 percent. (3) The performance factor for awards granted in 2018 was lowered to 47.5 percent based on a comparison of actual results for 2018 to performance goals. The performance factor for awards granted in 2019 was lowered to 0 percent based upon a comparison of actual results for 2019 to performance goals. The performance factor for awards granted in 2020 was increased to 138.5 percent based upon a comparison of actual results for 2020 to performance goals. (4) The aggregate grant date fair value of performance share unit awards issued during 2019 was $0.3 million based on a grant date market price of our common shares of $34.00 per share and assuming a performance factor of 100 percent.

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	12 Months Ended
Supplemental Cash Flow Information (Tables)	Dec. 31, 2020
Supplemental Cash Flow Elements [Abstract]
Schedule of supplemental cash flow information	Supplemental cash flows and non-cash transactions were as follows for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Cash paid for interest $ 444 $ 636 $ 109 Cash paid for federal and state income taxes 418 234 787 Cash refund for NOL carryback under CARES Act 2,703 — — Non-cash transactions: Change in accounts payable related to property and equipment additions (1,237) (448) 1685 Property and equipment acquired under finance leases 11,412 4,148 2,898 Issuance of common shares in asset acquisition (see Note 6) — 392 — Receivable for sale of property and equipment — 952 —

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2020
Leases [Abstract]
Schedule of Lease Cost	The following table provides the components of lease expense the periods indicated (in thousands): Year Ended December 31, 2020 2019 Finance lease cost: Amortization of ROU assets $ 2,547 $ 1,807 Interest on lease liabilities 300 295 Operating lease cost 2,718 2,933 Short-term lease cost 11,020 9,627 Total lease expense $ 16,585 $ 14,662 The following table provides supplemental cash flow and other information related to leases for the periods indicated (in thousands): Year Ended December 31, 2020 2019 Cash paid for amounts included in measurement of lease liabilities: Operating cash flows from operating leases (1) $ 2,717 $ 2,934 Operating cash flows from finance leases 291 295 Financing cash flows from finance leases 2,336 1,697 ROU assets obtained in exchange for new lease liabilities: Finance leases (2) 11,412 4,148 Operating leases 819 12,006 ______________ (1) Amounts are included in Other operating activities on the consolidated cash flow statements. (2) 2020 amount consists of a finance lease agreements for 58 tractors with five six The following table provides the lease terms and discount rates for the periods indicated: Year Ended December 31, 2020 2019 Weighted-average remaining lease term (years): Finance leases 4.16 3.03 Operating leases 4.57 4.78 Weighted-average discount rate: Finance leases 3.0 % 4.9 % Operating leases 4.3 % 5.0 %
Schedule of Lease Assets and Liabilities	The following table provides supplemental balance sheet information related to leases at the dates indicated (in thousands): December 31, 2020 2019 Assets Finance lease ROU assets (1) $ 15,251 $ 6,384 Operating lease ROU assets 8,051 9,576 Liabilities Current Finance lease liabilities 4,112 2,167 Operating lease liabilities 2,050 2,252 Noncurrent Finance lease liabilities 11,507 4,376 Operating lease liabilities 6,000 7,323 ______________ (1) Amounts are included in Property and equipment, net on the consolidated balance sheets.
Schedule of Lessee, Operating Lease, Liability, Maturity	The following table provides maturities of undiscounted lease liabilities at December 31, 2020 (in thousands): Finance Operating Lease Lease 2021 $ 4,496 $ 2,343 2022 3,562 2,002 2023 2,764 1,821 2024 1,969 1,700 2025 2,992 222 Thereafter 802 675 Total lease payments 16,585 8,763 Less: Interest (966) (713) Present value of lease liabilities 15,619 8,050 Less: Current portion of lease obligation (4,112) (2,050) Total long-term lease obligation $ 11,507 $ 6,000
Schedule of Finance Lease, Liability, Maturity	The following table provides maturities of undiscounted lease liabilities at December 31, 2020 (in thousands): Finance Operating Lease Lease 2021 $ 4,496 $ 2,343 2022 3,562 2,002 2023 2,764 1,821 2024 1,969 1,700 2025 2,992 222 Thereafter 802 675 Total lease payments 16,585 8,763 Less: Interest (966) (713) Present value of lease liabilities 15,619 8,050 Less: Current portion of lease obligation (4,112) (2,050) Total long-term lease obligation $ 11,507 $ 6,000
Schedule of Principal Contractual Commitments Outstanding Under our Capital Leases	The following table provides maturities of undiscounted lease liabilities at December 31, 2019 (in thousands): Finance Operating Lease Lease 2020 $ 2,426 $ 2,660 2021 2,426 2,256 2022 1,492 1,914 2023 642 1,776 2024 37 1,668 Thereafter — 443 Total lease payments 7,023 10,717 Less: Interest (480) (1,142) Present value of lease liabilities 6,543 9,575 Less: Current portion of lease obligation (2,167) (2,252) Total long-term lease obligation $ 4,376 $ 7,323
Schedule of Principal Contractual Commitments Outstanding Under our Operating Leases	The following table provides maturities of undiscounted lease liabilities at December 31, 2019 (in thousands): Finance Operating Lease Lease 2020 $ 2,426 $ 2,660 2021 2,426 2,256 2022 1,492 1,914 2023 642 1,776 2024 37 1,668 Thereafter — 443 Total lease payments 7,023 10,717 Less: Interest (480) (1,142) Present value of lease liabilities 6,543 9,575 Less: Current portion of lease obligation (2,167) (2,252) Total long-term lease obligation $ 4,376 $ 7,323

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Schedule of Expenses and Losses Incurred but Not Reported	were as follows at the dates indicated (in thousands): December 31, 2020 2019 Pre-funded premiums for losses incurred but not reported $ 55 $ 168 Accrued automobile and workers’ compensation claims 3,171 2,956 Accrued medical claims 915 1,016

Concentration of Credit Risk (T

Concentration of Credit Risk (Tables)	12 Months Ended
Concentration of Credit Risk (Tables)	Dec. 31, 2020
Risks and Uncertainties [Abstract]
Schedule of Concentration of Risk	We believe that a loss of any of the customers where we currently derive more than 10 percent of our revenues would not have a material adverse effect on our operations. Individual customer sales Individual customer receivables in excess in excess of 10% of revenues of 10% of total receivables Year Ended December 31, December 31, 2020 2019 2018 2020 2019 2018 24.0 % 37.3 % 27.3 % 11.3 % 16.6 % 18.4 % 10.8 % 11.4 % 14.1 % 10.9 % 12.6 % 11.9 % 10.7 % 10.4 %

Quarterly Financial Informati_2

Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
Quarterly Financial Information (Unaudited) (Tables)	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data and Earnings Per Share	The following table presents selected quarterly financial data for the periods indicated (in thousands, except per share data): First Second Third Fourth Quarter Quarter Quarter Quarter Year Ended December 31, 2020 Revenues $ 353,477 $ 152,286 $ 266,904 $ 249,755 Operating (losses) earnings (1) (19,940) 2,935 6,056 5,202 Net (losses) earnings (11,427) 3,503 3,073 5,846 Earnings (losses) per share: (2) Basic net (losses) earnings per share $ (2.70) $ 0.83 $ 0.72 $ 1.38 Diluted net (losses) earnings per share $ (2.69) $ 0.82 $ 0.72 $ 1.37 Year Ended December 31, 2019 Revenues $ 445,168 $ 484,433 $ 450,307 $ 431,339 Operating earnings (losses) 5,253 (643) 303 2,887 Net earnings 4,908 6 640 2,653 Earnings per share: Basic net earnings per share $ 1.16 $ — $ 0.15 $ 0.63 Diluted net earnings per share $ 1.16 $ — $ 0.15 $ 0.63 ____________________ (1) The first quarter of 2020 includes inventory valuation losses of approximately $24.2 million in our crude oil marketing segment.

Organization and Basis of Pre_2

Organization and Basis of Presentation (Details)	12 Months Ended
Organization and Basis of Presentation (Details)	Dec. 31, 2020segmentstate	Dec. 31, 2019segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of states in which entity operates \| state	48
Number of operating segments		3
Number of reportable segments	3

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Accounts Receivable and Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Industry practice payment of receivables	20 days
Changes in the allowance for doubtful accounts [Roll Forward]
Balance at beginning of period	$ 141	$ 153	$ 303
Charges to costs and expenses	0	26	43
Deductions	(27)	(38)	(193)
Balance at end of period	$ 114	$ 141	$ 153
Product Concentration Risk \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	90.00%

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 12,772	$ 9,261
Letter of Credit
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	5,100	$ 9,300
Initial Capitalization
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	1,500
Insurance Premiums
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 6,100

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Reconciliation of Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Cash and cash equivalents	$ 39,293	$ 112,994
Restricted cash	12,772	9,261
Total cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows	$ 52,065	$ 122,255	$ 117,066	$ 109,393

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Common Shares Outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	4,235,533	4,217,596
Issuance of shares in acquisition (in shares)		11,145
Vesting of restricted stock unit awards (in shares)	10,290	7,604
Shares withheld to cover taxes upon vesting of restricted stock unit awards (in shares)	(2,107)	(883)
Other (in shares)		71
Ending balance (in shares)	4,243,716	4,235,533

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	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
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net earnings	$ 5,846	$ 3,073	$ 3,503	$ (11,427)	$ 2,653	$ 640	$ 6	$ 4,908	$ 995	$ 8,207	$ 2,945
Basic weighted average number of shares outstanding (in shares)									4,240	4,228	4,218
Basic earnings per share (in dollars per share)	$ 1.38	$ 0.72	$ 0.83	$ (2.70)	$ 0.63	$ 0.15	$ 0	$ 1.16	$ 0.23	$ 1.94	$ 0.70
Diluted weighted average number of shares outstanding (in shares)									4,254	4,233	4,218
Diluted earnings per share (in dollars per share)	$ 1.37	$ 0.72	$ 0.82	$ (2.69)	$ 0.63	$ 0.15	$ 0	$ 1.16	$ 0.23	$ 1.94	$ 0.70
Restricted stock units awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units award (in shares)									11	5	0
Performance share unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units award (in shares)									3	0	0

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Employee Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Contributory expenses	$ 1,100	$ 1,117	$ 808

Summary of Significant Accou_10

Summary of Significant Accounting Policies - Income Taxes (Details) - USD ($) $ in Thousands	1 Months Ended
	Jun. 30, 2020	Dec. 31, 2020
Accounting Policies [Abstract]
Proceeds from income tax refunds	$ 2,700
CARES Act, NOL carryback provision, cash benefits		$ 3,700

Summary of Significant Accou_11

Summary of Significant Accounting Policies - Inventory (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Inventory write-down	$ 24,200,000	$ 0	$ 5,400,000

Summary of Significant Accou_12

Summary of Significant Accounting Policies - Investment in Unconsolidated Affiliate (Details) - VestaCare, Inc. - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Percentage of equity method investment		15.00%	15.00%
Voting interest		3.00%
Payments to acquire equity method investments	$ 2,500	$ 2,500

Summary of Significant Accou_13

Summary of Significant Accounting Policies - Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2020
Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	2 years
Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	39 years

Revenue Recognition - Revenue D

Revenue Recognition - Revenue Disaggregation (Details) - USD ($) $ in Thousands	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
Revenue from Contract with Customer [Abstract]
Revenue, performance obligation, description of timing									Payment is typically due in full within 30 days of the invoice date.
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									$ 987,434	$ 1,618,584	$ 1,636,773
Other									34,988	192,663	113,440
Total revenues	$ 249,755	$ 266,904	$ 152,286	$ 353,477	$ 431,339	$ 450,307	$ 484,433	$ 445,168	1,022,422	1,811,247	1,750,213
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									915,438	1,555,393	1,580,997
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									71,996	63,191	55,776
Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									987,434	1,618,584	1,636,773
Marketing
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									915,438	1,555,393	1,580,997
Other									34,988	192,663	113,440
Total revenues									950,426	1,748,056	1,694,437
Marketing \| Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									915,438	1,555,393	1,580,997
Marketing \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									0	0	0
Marketing \| Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									915,438	1,555,393	1,580,997
Transportation
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									71,724	63,191	55,776
Other									0	0	0
Total revenues									71,724	63,191	55,776
Transportation \| Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									0	0	0
Transportation \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									71,724	63,191	55,776
Transportation \| Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									71,724	63,191	55,776
Pipeline and storage
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									272	0	0
Other									0	0	0
Total revenues									272	0	0
Pipeline and storage \| Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									0	0	0
Pipeline and storage \| Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									272	0	0
Pipeline and storage \| Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									$ 272	$ 0	$ 0

Revenue Recognition - Other Rev

Revenue Recognition - Other Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues from contracts with customers	$ 987,434	$ 1,618,584	$ 1,636,773
Accounting Standards Update 2014-09 \| Revenue gross-up
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues from contracts with customers	$ 419,127	$ 859,091	$ 448,846

Prepayments and Other Current_3

Prepayments and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Insurance premiums	$ 690	$ 473
Vendor prepayment	1,085	0
Rents, licenses and other	1,189	1,086
Total	$ 2,964	$ 1,559

Property and Equipment - Cost o

Property and Equipment - Cost of Property and Equipment and Related Accumulated Depreciaton, Depletion, and Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 189,102	$ 164,244
Less accumulated depreciation and amortization	(94,968)	(95,198)
Property and equipment, net	94,134	69,046
Depreciation and amortization	18,573	16,641	$ 10,654
Amortization of property and equipment under finance leases	$ 2,547	1,807
Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	2 years
Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	39 years
Tractors and trailers
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 101,813	110,153
Tractors and trailers \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	5 years
Tractors and trailers \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	6 years
Field equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 22,139	21,780
Field equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	2 years
Field equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	5 years
Finance lease ROU assets
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 20,266	8,854
Less accumulated depreciation and amortization	$ (5,000)	(2,500)
Finance lease ROU assets \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years
Finance lease ROU assets \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	6 years
Pipeline and related facilities
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 21,265	0
Pipeline and related facilities \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	20 years
Pipeline and related facilities \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	25 years
Linefill and base gas
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,333	0
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 14,977	16,055
Buildings \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	5 years
Buildings \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	39 years
Office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,893	1,951
Office equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	2 years
Office equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	5 years
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,790	1,790
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,626	3,661
Assets not held under finance leases
Property, Plant and Equipment [Line Items]
Depreciation and amortization	16,026	14,833	10,112
Assets held under finance leases
Property, Plant and Equipment [Line Items]
Amortization of property and equipment under finance leases	$ 2,547	$ 1,808	$ 542

Property and Equipment - Sales

Property and Equipment - Sales of Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Trucks
Property, Plant and Equipment [Line Items]
Gains on sales of used tractors, trailers and equipment	$ 1,859	$ 1,400	$ 1,240

Property and Equipment - Asset

Property and Equipment - Asset Retirement Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO liability at beginning of year	$ 1,573	$ 1,525	$ 1,273
Liabilities incurred	0	17	252
Accretion of discount	49	48	36
Liabilities settled	(38)	(17)	(36)
AROs related to pipeline acquisition (see Note 6)	723	0	0
ARO liability at end of year	$ 2,307	$ 1,573	$ 1,525

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) $ / shares in Units, bbl in Thousands, barrel_of_oil_per_day in Thousands	Oct. 22, 2020USD ($)docbblterminalbarrel_of_oil_per_daystationpayment	Jun. 26, 2020USD ($)marker_areatrucktrailer	May 17, 2020location	May 06, 2019USD ($)trucktrailer$ / sharesshares	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Schedule of Asset Acquisition [Line Items]
AROs related to pipeline acquisition (see Note 6)					$ 723,000	$ 0	$ 0
Customer Relationships
Schedule of Asset Acquisition [Line Items]
Useful life				7 years
Victoria Express Pipeline, LLC (VEX) and EnLink Midstream Operating, L.P.
Schedule of Asset Acquisition [Line Items]
Purchase price	$ 20,000,000
Amount at closing	$ 10,000,000
Number of quarterly Installment payments \| payment	4
Quarterly installment payment	$ 2,500,000
Annual interest rate	4.00%
Cash payment for acquisition	$ 500,000
Transaction costs	600,000
Consideration transferred	$ 21,000,000
AROs related to pipeline acquisition (see Note 6)					$ 700,000
Victoria Express Pipeline, LLC (VEX)
Schedule of Asset Acquisition [Line Items]
Capacity of ground storage in barrels \| bbl	350
Number of offload stations \| station	2
Number of docs \| doc	2
Connection to number of terminals \| terminal	2
Capacity of a pipeline \| barrel_of_oil_per_day	90
Controlled capacity of ground storage in barrels \| bbl	450
Controlled number of docs \| doc	3
Comcar
Schedule of Asset Acquisition [Line Items]
Payments for asset acquisitions		$ 9,000,000
Number of operating locations \| location			9
Number of tractor trailer trucks \| truck		163
Number of trailers \| trailer		328
New market areas \| marker_area		6
Transaction costs		$ 100,000
Comcar \| Customer Relationships
Schedule of Asset Acquisition [Line Items]
Useful life			7 years
EH Trucking
Schedule of Asset Acquisition [Line Items]
Payments for asset acquisitions				$ 6,447,000
Cash				$ 5,624,000
Number of shares \| shares				11,145
Number of tractor trailer trucks \| truck				39
Number of trailers \| trailer				51
Transaction costs				$ 100,000
Share price (USD per share) \| $ / shares				$ 35.15
Liabilities assumed				$ 0
Maximum quarterly payment				146,875
Contingent consideration arrangements, range of outcomes, value, low				0
Contingent consideration arrangements, range of outcomes, value, high				$ 587,500
EH Trucking \| Customer Relationships
Schedule of Asset Acquisition [Line Items]
Useful life				7 years

Acquisitions - Consideration Pa

Acquisitions - Consideration Paid and Amortization Expense (Details) - USD ($) $ in Thousands	Jun. 26, 2020	May 06, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Oct. 22, 2020
Recognized amounts of identifiable assets acquired:
Property and equipment — tractors and trailers			$ 5,008	$ 35,743	$ 11,731
Victoria Express Pipeline, LLC (VEX) and EnLink Midstream Operating, L.P.
Estimated fair value of the assets acquired:
Accounts receivable and other current assets						$ 80
Linefill and base gas						1,013
Property and equipment — Pipeline and related terminal facilities						20,542
Accounts payable and other accrued liabilities						(598)
Total purchase price						$ 21,037
Comcar
Estimated fair value of the assets acquired:
Property and equipment — tractors and trailers	$ 5,901
Materials and supplies	87
Intangible assets — customer relationships	3,175
Total purchase price	9,163
Consideration:
Fair value of total consideration transferred	$ 9,000
EH Trucking
Consideration:
Cash		$ 5,624
Value of AE common shares issued		392
Contingent consideration arrangement		431
Fair value of total consideration transferred		6,447
Recognized amounts of identifiable assets acquired:
Property and equipment — tractors and trailers		4,576
Shop, office and telecommunication equipment		20
Intangible assets — customer relationships		1,851
Total purchase price		$ 6,447

Acquisitions - Red River (Detai

Acquisitions - Red River (Details) - Red River $ in Thousands	Oct. 01, 2018USD ($)trailertruck
Business Acquisition [Line Items]
Cash payment for acquisition	$ 10,000
Number of tractor trailer trucks \| truck	113
Number of trailers \| trailer	126
Acquisition related costs	$ 300
Purchase price	10,300
Purchase Price Allocation
Tractors	4,799
Trailers	4,901
Field equipment	381
Materials and supplies	191
Total purchase price	$ 10,272

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Insurance collateral deposits	$ 714	$ 1,233
Excess loss fund	617	943
Accumulated interest income	449	609
State collateral deposits	31	37
Materials and supplies	488	477
Other	84	0
Total	$ 2,383	$ 3,299

Intangible Assets (Details)

Intangible Assets (Details) - Customer Relationships - USD ($) $ in Thousands	May 17, 2020	May 06, 2019	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Net
Gross Value			$ 4,876	$ 1,808
Accumulated Amortization			(770)	(211)
Net			4,106	1,597
Useful life		7 years
Amortization of intangible assets			600	200
Finite-Lived Intangible Assets, Net, Amortization Expense
2021			798
2022			746
2023			695
2024			646
2025			615
EH Trucking
Finite-Lived Intangible Assets, Net
Gross Value			1,703	1,808
Accumulated Amortization			(500)	(211)
Net			1,203	1,597
Useful life		7 years
Finite-Lived Intangible Assets, Net, Amortization Expense
2021			274
2022			254
2023			235
2024			218
2025			202
Comcar
Finite-Lived Intangible Assets, Net
Gross Value			3,173	0
Accumulated Amortization			(270)	0
Net			2,903	$ 0
Useful life	7 years
Finite-Lived Intangible Assets, Net, Amortization Expense
2021			524
2022			492
2023			460
2024			428
2025			$ 413

Segment Reporting - Information

Segment Reporting - Information Concerning Business Activities (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2020USD ($)segment	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment									3
Revenues	$ 249,755	$ 266,904	$ 152,286	$ 353,477	$ 431,339	$ 450,307	$ 484,433	$ 445,168	$ 1,022,422	$ 1,811,247	$ 1,750,213
Operating earnings (losses)									(5,747)	7,800	1,408
Depreciation and amortization									18,573	16,641	10,654
Property and equipment additions									5,008	35,743	11,731
Inventory liquidation gains and valuation (losses)	$ (15,000)			$ 24,200	$ 3,700				(15,000)	3,700	(5,400)
Marketing
Segment Reporting Information [Line Items]
Revenues									950,426	1,748,056	1,694,437
Depreciation and amortization									7,421	8,741	6,384
Property and equipment additions									3,130	7,249	1,540
Transportation
Segment Reporting Information [Line Items]
Revenues									71,724	63,191	55,776
Depreciation and amortization									10,963	7,900	4,270
Property and equipment additions									1,355	28,472	10,178
Pipeline and storage
Segment Reporting Information [Line Items]
Revenues									272	0	0
Depreciation and amortization									189	0	0
Property and equipment additions									0	0	0
Operating Segments
Segment Reporting Information [Line Items]
Operating earnings (losses)									4,537	17,998	10,345
Operating Segments \| Marketing
Segment Reporting Information [Line Items]
Operating earnings (losses)									2,974	16,099	7,008
Operating Segments \| Transportation
Segment Reporting Information [Line Items]
Operating earnings (losses)									1,873	1,899	3,337
Operating Segments \| Pipeline and storage
Segment Reporting Information [Line Items]
Operating earnings (losses)									(310)	0	0
Other
Segment Reporting Information [Line Items]
Revenues									0	0	0
Operating earnings (losses)									0	0	0
Depreciation and amortization									0	0	0
Property and equipment additions									$ 523	$ 22	$ 13

Segment Reporting - Reconciliat

Segment Reporting - Reconciliation of Segment Earnings to Earnings Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating earnings (losses)	$ (5,747)	$ 7,800	$ 1,408
General and administrative	(10,284)	(10,198)	(8,937)
Gain on dissolution of investment	0	573	0
Interest income	656	2,766	2,155
Interest expense	(444)	(636)	(109)
(Losses) earnings before income taxes	(5,535)	10,503	3,454
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating earnings (losses)	4,537	17,998	10,345
Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating earnings (losses)	0	0	0
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gain on dissolution of investment	0	573	0
Interest income	656	2,766	2,155
Interest expense	$ (444)	$ (636)	$ (109)

Segment Reporting - Identifiabl

Segment Reporting - Identifiable Assets by Industry Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Assets	$ 296,187	$ 330,842
Operating Segments
Segment Reporting Information [Line Items]
Assets	296,187	330,842	$ 278,870
Operating Segments \| Marketing
Segment Reporting Information [Line Items]
Assets	128,441	141,402	119,370
Operating Segments \| Transportation
Segment Reporting Information [Line Items]
Assets	72,247	58,483	34,112
Operating Segments \| Pipeline and storage
Segment Reporting Information [Line Items]
Assets	24,541	0	0
Other
Segment Reporting Information [Line Items]
Assets	$ 70,958	$ 130,957	$ 125,388

Transactions with Affiliates (D

Transactions with Affiliates (Details) - Affiliated Entities - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Affiliate billings to us	$ 18	$ 83	$ 75
Billings to affiliates	5	5	6
Rentals paid to affiliate	$ 644	$ 487	$ 487

Other Current Liabilities (Deta

Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
Accrued purchase price for VEX acquisition (see Note 6)	$ 10,000	$ 0
Accrual for payroll, benefits and bonuses	6,575	2,301
Other	5,768	5,001
Other current liabilities	$ 22,343	$ 7,302

Derivative Instruments and Fa_3

Derivative Instruments and Fair Value Measurements - Narrative (Details) - Commodity Contract	12 Months Ended
	Dec. 31, 2020barrel_of_oil_per_daycontract	Dec. 31, 2019barrel_of_oil_per_daycontract
Derivative [Line Items]
Number of contracts held, fair value \| contract	3
Number of contracts held \| contract	6	6
January 2021 through December 2021
Derivative [Line Items]
Production per day	192
January 2020 through February 2020
Derivative [Line Items]
Production per day		258
March 2020 through April 2020
Derivative [Line Items]
Production per day		322
May 2020 through December 2020
Derivative [Line Items]
Production per day		258

Derivative Instruments and Fa_4

Derivative Instruments and Fair Value Measurements - Use of Derivative Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivative, Fair Value, Net [Abstract]
As reported fair value contracts	$ 61	$ 0
As reported fair value contracts	52	0
Commodity Contract \| Not Designated as Hedging Instrument \| Current Assets
Derivative, Fair Value, Net [Abstract]
Asset derivatives:	61
Liability derivatives:	0	0
Less counterparty offsets	0	0
As reported fair value contracts	61	0
Commodity Contract \| Not Designated as Hedging Instrument \| Other Assets
Derivative, Fair Value, Net [Abstract]
Asset derivatives:	0	0
Liability derivatives:	0	0
Less counterparty offsets	0	0
As reported fair value contracts	0	0
Commodity Contract \| Not Designated as Hedging Instrument \| Current Liabilities
Derivative, Fair Value, Net [Abstract]
Asset derivatives:	0	0
Liability derivatives:	52	0
Less counterparty offsets	0	0
As reported fair value contracts	52	0
Commodity Contract \| Not Designated as Hedging Instrument \| Other Liabilities
Derivative, Fair Value, Net [Abstract]
Asset derivatives:	0	0
Liability derivatives:	0	0
Less counterparty offsets	0	0
As reported fair value contracts	$ 0	$ 0

Derivative Instruments and Fa_5

Derivative Instruments and Fair Value Measurements - Forward Month Commodity Contracts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Commodity Contract \| Revenues - Marketing \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Revenues – Marketing	$ 9	$ (24)	$ 2

Derivative Instruments and Fa_6

Derivative Instruments and Fair Value Measurements - Derivatives by Hedging Relationship and Fair Value Measurements (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivatives:
Current assets	$ 61	$ 0
Current assets, counterparty offsets	0	0
Current liabilities	(52)	0
Current liabilities, counterparty offsets	0	0
Net value	9	0
Net value, counterparty offsets	0	0
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)
Derivatives:
Current assets	0	0
Current liabilities	0	0
Net value	0	0
Significant Unobservable Inputs (Level 2)
Derivatives:
Current assets	61	0
Current liabilities	(52)	0
Net value	9	0
Significant Unobservable Inputs (Level 3)
Derivatives:
Current assets	0	0
Current liabilities	0	0
Net value	$ 0	$ 0

Income Taxes - Components of th

Income Taxes - Components of the Company's Income Tax (Provision) Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 13,246	$ 164	$ 388
State	(327)	(375)	39
Total current	12,919	(211)	427
Deferred:
Federal	(6,631)	(2,063)	(752)
State	242	(22)	(184)
Total deferred	(6,389)	(2,085)	(936)
Total (provision for) benefit from income taxes	$ 6,530	$ (2,296)	$ (509)

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Taxes Computed at the Corporate Federal Income Tax Rate to the Reported Income Tax (provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Pre-tax net book income (loss)	$ (5,535)	$ 10,503	$ 3,454
Statutory federal income tax (provision) benefit	1,162	(2,206)	(725)
State income tax (provision) benefit	(16)	(397)	(145)
2018/2019 carryback	2,664	0	0
2020 carryback	2,642	0	0
Reverse valuation allowance	0	0	98
Return to provision adjustments	13	285	388
Other	65	22	(125)
Total (provision for) benefit from income taxes	$ 6,530	$ (2,296)	$ (509)
Effective income tax rate	118.00%	22.00%	15.00%
Effective income tax rate excluding adjustment	22.00%

Income Taxes - Components of _2

Income Taxes - Components of the Federal Deferred Tax Asset (Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Long-term deferred tax asset (liability) [Abstract]
Prepaid and other insurance	$ (861)
Prepaid and other insurance		$ 248
Property	(12,807)	(9,953)
Investment in unconsolidated affiliate	525	525
Valuation allowance related to investment in unconsolidated affiliate	(525)	(525)
Net operating loss	536	3,567
Other	423	(184)
Net long-term deferred tax liability	$ (12,709)	$ (6,322)

Income Taxes - Earliest Tax Yea

Income Taxes - Earliest Tax Years Remaining for Federal and Major States of Operations (Details)	12 Months Ended
	Dec. 31, 2020
Federal
Income Tax Examination [Line Items]
Earliest Open Tax Year	2013
Texas
Income Tax Examination [Line Items]
Earliest Open Tax Year	2016
Louisiana
Income Tax Examination [Line Items]
Earliest Open Tax Year	2017
Michigan
Income Tax Examination [Line Items]
Earliest Open Tax Year	2016

Share-Based Compensation Plan_2

Share-Based Compensation Plan (Details) - USD ($)	12 Months Ended
Share-Based Compensation Plan (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense in connection with equity-based awards	$ 643,000	$ 478,000	$ 255,000
The 2018 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	88,374			150,000
Accrued dividends	$ 50,800	$ 23,600
The 2018 LTIP \| Restricted stock units awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	33.00%
Number of Shares
Beginning balance (in shares)	18,782	13,733	0
Granted (in shares)	20,346	14,376	13,733
Vested (in shares)	(9,578)	(7,188)	0
Forfeited (in shares)	(2,060)	(2,139)	0
Ending balance (in shares)	27,490	18,782	13,733
Weighted Average Grant Date Fair Value per Share
Beginning balance (in dollars per share)	$ 37.05	$ 43	$ 0
Granted (in dollars per share)	24.85	34	43
Vested (in dollars per share)	36.36	41.90	0
Forfeited (in dollars per share)	30.07	38.42	0
Ending balance (in dollars per share)	$ 28.64	$ 37.05	$ 43
Aggregate grant date fair value awards issues	$ 500,000	$ 500,000	$ 600,000
Unrecognized compensation cost	$ 300,000
Period for recognition for remaining compensation cost	1 year 4 months 24 days
The 2018 LTIP \| Restricted stock units awards \| Minimum
Weighted Average Grant Date Fair Value per Share
Granted (in dollars per share)	$ 24.77
The 2018 LTIP \| Restricted stock units awards \| Maximum
Weighted Average Grant Date Fair Value per Share
Granted (in dollars per share)	$ 26.23
The 2018 LTIP \| Performance share unit awards
Number of Shares
Beginning balance (in shares)	2,787	3,966	0
Granted (in shares)	10,781	8,094	7,932
Performance factor increase (decrease) (in shares)	3,981	(7,312)	(3,966)
Vested (in shares)	(713)	(416)	0
Forfeited (in shares)	(595)	(1,545)	0
Ending balance (in shares)	16,241	2,787	3,966
Weighted Average Grant Date Fair Value per Share
Beginning balance (in dollars per share)	$ 43	$ 43	$ 0
Granted (in dollars per share)	24.92	34	43
Performance factor decrease (in dollars per share)	24.92	34.23	43
Vested (in dollars per share)	28.55	43	0
Forfeited (in dollars per share)	30.22	37.37	0
Ending balance (in dollars per share)	$ 27.67	$ 43	$ 43
Aggregate grant date fair value awards issues	$ 200,000	$ 300,000	$ 200,000
Unrecognized compensation cost	$ 300,000
Award vesting period	3 years
Performance factor	100.00%	100.00%	47.50%
Period for recognition for remaining compensation cost	2 years 1 month 6 days
The 2018 LTIP \| Performance share unit awards \| Plan
Weighted Average Grant Date Fair Value per Share
Performance factor	138.50%	0.00%	100.00%
The 2018 LTIP \| Performance share unit awards \| Minimum
Weighted Average Grant Date Fair Value per Share
Granted (in dollars per share)	$ 24.77
The 2018 LTIP \| Performance share unit awards \| Maximum
Weighted Average Grant Date Fair Value per Share
Granted (in dollars per share)	$ 26.23

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 444	$ 636	$ 109
Cash paid for federal and state income taxes	418	234	787
Cash refund for NOL carryback under CARES Act	2,703	0	0
Non-cash transactions:
Change in accounts payable related to property and equipment	(1,237)	(448)	1,685
Property and equipment acquired under capital leases	11,412	4,148	2,898
Issuance of common shares in asset acquisition (see Note 6)	0	392	0
Receivable for sale of property and equipment	$ 0	$ 952	$ 0

Leases (Details)

Leases (Details) $ in Thousands	May 17, 2020trailertractor	Dec. 31, 2020USD ($)finance_lease	Dec. 31, 2019USD ($)	Jan. 01, 2019USD ($)
Leases [Abstract]
Operating lease, liability		$ 8,050	$ 9,575	$ 11,400
Lessee, Lease, Description [Line Items]
Number of finance lease agreements with residual value guarantee provisions \| finance_lease		4
Finance lease liabilities with residual value guarantee provisions		$ 1,800
Lease, Cost [Abstract]
Amortization of ROU assets		2,547	1,807
Interest on lease liabilities		300	295
Operating lease cost		2,718	2,933
Short-term lease cost		11,020	9,627
Total lease expense		16,585	14,662
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases		2,717	2,934
Operating cash flows from finance leases		291	295
Financing cash flows from finance leases		2,336	1,697
ROU assets obtained in exchange for new lease liabilities:
Finance leases		11,412	4,148
Operating leases		$ 819	$ 12,006
Weighted-average remaining lease term (years):
Finance leases		4 years 1 month 28 days	3 years 10 days
Operating leases		4 years 6 months 25 days	4 years 9 months 10 days
Weighted-average discount rate:
Finance leases		3.00%	4.90%
Operating leases		4.30%	5.00%
Assets and Liabilities
Finance lease, ROU assets		$ 15,251	$ 6,384
Operating lease right-of-use assets, net		8,051	9,576
Current portion of finance lease obligations		4,112	2,167
Operating lease, liability, current		2,050	2,252
Finance lease, liability, noncurrent		11,507	4,376
Operating lease, liability, noncurrent		6,000	7,323
Finance Lease
2021		4,496	2,426
2022		3,562	2,426
2023		2,764	1,492
2024		1,969	642
2025		2,992	37
Thereafter		802	0
Total lease payments		16,585	7,023
Less: Interest		(966)	(480)
Present value of lease liabilities		15,619	6,543
Less: Current portion of lease obligation		(4,112)	(2,167)
Total long-term lease obligation		11,507	4,376
Operating Lease
2021		2,343	2,660
2022		2,002	2,256
2023		1,821	1,914
2024		1,700	1,776
2025		222	1,668
Thereafter		675	443
Total lease payments		8,763	10,717
Less: Interest		(713)	(1,142)
Present value of lease liabilities		8,050	9,575	$ 11,400
Less: Current portion of lease obligation		(2,050)	(2,252)
Total long-term lease obligation		$ 6,000	$ 7,323
Comcar
Lessee, Lease, Description [Line Items]
Finance leased arrangements, number of tractors \| tractor	58
Finance leased arrangements, number of trailers \| trailer	40
Comcar \| Tractors
Lessee, Lease, Description [Line Items]
Useful life	5 years
Comcar \| Trailers
Lessee, Lease, Description [Line Items]
Useful life	6 years
Minimum
Lessee, Lease, Description [Line Items]
Leases, weighted average remaining lease term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Leases, weighted average remaining lease term		8 years

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Aug. 15, 2019
Commitments and Contingencies Disclosure [Abstract]
Self-insured retention	$ 1,000,000
Percent of risk loss shared	20.00%
Amount of risk loss shared	$ 1,000,000
Benchmark for risk of loss amount	5,000,000
Umbrellas insurance coverage	1,400,000
Aggregate medical claims for umbrella insurance coverage per calendar year	7,500,000
Estimate of possible loss		$ 1,200,000
Parental guaranteed obligations	$ 24,100,000

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Expenses and Losses Incurred but not Reported (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Pre-funded premiums for losses incurred but not reported	$ 55	$ 168
Accrued automobile and workers’ compensation claims	3,171	2,956
Accrued medical claims	$ 915	$ 1,016

Concentration of Credit Risk (D

Concentration of Credit Risk (Details) - customer	12 Months Ended
Concentration of Credit Risk (Details) - customer	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Percentage of U.S. demand supplied by company	1.00%
Customer Concentration Risk \| Revenues
Concentration Risk [Line Items]
Concentration risk, percentage	50.00%
Customer Concentration Risk \| Revenues \| Customer One
Concentration Risk [Line Items]
Concentration risk, percentage	24.00%	37.30%	27.30%
Customer Concentration Risk \| Revenues \| Customer Two
Concentration Risk [Line Items]
Concentration risk, percentage	10.80%	11.40%	14.10%
Customer Concentration Risk \| Revenues \| Minimum
Concentration Risk [Line Items]
Concentration risk, customers	3
Customer Concentration Risk \| Revenues \| Maximum
Concentration Risk [Line Items]
Concentration risk, customers	5
Customer Concentration Risk \| Accounts Receivable \| Customer One
Concentration Risk [Line Items]
Concentration risk, percentage	11.30%	16.60%	18.40%
Customer Concentration Risk \| Accounts Receivable \| Customer Two
Concentration Risk [Line Items]
Concentration risk, percentage	10.90%	12.60%	11.90%
Customer Concentration Risk \| Accounts Receivable \| Customer Three
Concentration Risk [Line Items]
Concentration risk, percentage	10.70%
Customer Concentration Risk \| Accounts Receivable \| Customer Four
Concentration Risk [Line Items]
Concentration risk, percentage	10.40%

Quarterly Financial Informati_3

Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	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
Selected quarterly financial data and earnings per share [Abstract]
Revenues	$ 249,755	$ 266,904	$ 152,286	$ 353,477	$ 431,339	$ 450,307	$ 484,433	$ 445,168	$ 1,022,422	$ 1,811,247	$ 1,750,213
Operating (losses) earnings	5,202	6,056	2,935	(19,940)	2,887	303	(643)	5,253
Net (losses) earnings	$ 5,846	$ 3,073	$ 3,503	$ (11,427)	$ 2,653	$ 640	$ 6	$ 4,908	$ 995	$ 8,207	$ 2,945
Earnings (losses) per share:
Basic earnings (losses) per share (in dollars per share)	$ 1.38	$ 0.72	$ 0.83	$ (2.70)	$ 0.63	$ 0.15	$ 0	$ 1.16	$ 0.23	$ 1.94	$ 0.70
Diluted net (losses) earnings per share (in dollars per share)	$ 1.37	$ 0.72	$ 0.82	$ (2.69)	$ 0.63	$ 0.15	$ 0	$ 1.16	$ 0.23	$ 1.94	$ 0.70
Inventory adjustments	$ (15,000)			$ 24,200	$ 3,700				$ (15,000)	$ 3,700	$ (5,400)