Select Interior Concepts (SIC) 10-Q6 May 212021 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2021	Apr. 30, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Registrant Name	SELECT INTERIOR CONCEPTS, INC.
Entity Central Index Key	0001723866
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		25,538,466
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Title of 12(b) Security	Class A Common Stock, par value $0.01 per share
Trading Symbol	SIC
Security Exchange Name	NASDAQ
Entity File Number	001-38632
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-4640296
Entity Address, Address Line One	400 Galleria Parkway
Entity Address, Address Line Two	Suite 1760
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30339
City Area Code	888
Local Phone Number	701-4737
Document Quarterly Report	true
Document Transition Report	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash	$ 4,110	$ 2,974
Accounts receivable, net of allowance for doubtful accounts of $532 and $489 at March 31, 2021 and December 31, 2020, respectively	63,213	67,881
Inventories	105,239	98,982
Prepaid expenses and other current assets	19,600	17,372
Income taxes receivable	4,932	4,617
Total current assets	197,094	191,826
Property and equipment, net of accumulated depreciation of $32,480 and $30,387 at March 31, 2021 and December 31, 2020, respectively	19,886	21,056
Deferred tax assets, net	8,877	8,877
Goodwill	99,789	99,789
Intangible assets, net	74,832	78,014
Other assets	3,406	5,446
Total assets	403,884	405,008
Current liabilities
Accounts payable	53,398	47,246
Accrued expenses and other current liabilities	17,722	20,353
Customer deposits	9,843	8,144
Current portion of long-term debt, net of financing fees of $1,279 and $1,279 at March 31, 2021 and December 31, 2020, respectively	15,571	15,623
Current portion of capital lease obligations	2,700	2,700
Total current liabilities	99,234	94,066
Line of credit	7,162	9,623
Long-term debt, net of current portion and financing fees of $1,417 and $1,486 at March 31, 2021 and December 31, 2020, respectively	134,370	134,526
Long-term capital lease obligations	4,885	5,235
Other long-term liabilities	5,024	7,367
Total liabilities	250,675	250,817
Commitments and contingencies (see Note 10)
Stockholders' equity
Treasury stock, 204,393 shares at March 31, 2021 and 160,733 shares at December 31, 2020, at cost	(1,651)	(1,279)
Additional paid-in capital	166,242	165,048
Accumulated deficit	(11,639)	(9,834)
Total stockholders' equity	153,209	154,191
Total liabilities and stockholders' equity	403,884	405,008
Customer Relationships
Current assets
Intangible assets, net	60,378	62,700
Other Intangible Assets
Current assets
Intangible assets, net	14,454	15,314
Class A
Stockholders' equity
Common stock	257	256
Total stockholders' equity	$ 257	$ 256

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Allowance for doubtful accounts	$ 532	$ 489
Accumulated depreciation	32,480	30,387
Accumulated amortization	71,638	68,456
Current portion of long-term debt, net of financing fees	1,279	1,279
Non current portion of long-term debt, net of financing fees	$ 1,417	$ 1,486
Treasury stock, shares	204,393	160,733
Customer Relationships
Accumulated amortization	$ 59,862	$ 57,540
Other Intangible Assets
Accumulated amortization	$ 11,776	$ 10,916
Class A
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	25,731,640	25,609,758
Common stock, shares outstanding	25,527,247	25,449,025

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue, net	$ 137,787	$ 134,378
Cost of revenue	103,922	103,684
Gross profit	33,865	30,694
Selling, general and administrative expenses	34,365	32,667
Loss from operations	(500)	(1,973)
Other expense:
Interest expense	3,424	3,895
Other expense, net	2,111	1,377
Total other expense, net	5,535	5,272
Loss before benefit from income taxes	(6,035)	(7,245)
Benefit from income taxes	(4,230)	(3,243)
Net loss	$ (1,805)	$ (4,002)
Loss per share of common stock
Basic common stock	$ (0.07)	$ (0.16)
Diluted common stock	$ (0.07)	$ (0.16)
Weighted average shares outstanding
Basic common stock	25,494,410	25,192,201
Diluted common stock	25,494,410	25,192,201

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows provided by operating activities
Net loss	$ (1,805)	$ (4,002)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	5,566	5,644
Equity-based compensation	1,194	(669)
Deferred provision for income taxes		328
Amortized interest on deferred debt issuance costs	344	164
Provision for doubtful accounts	87	243
Gain on disposal of property and equipment, net	(27)	(5)
Other	(282)	(65)
Changes in operating assets and liabilities:
Accounts receivable	4,581	3,219
Inventories	(6,257)	(2,154)
Prepaid expenses and other current assets	(2,337)	68
Other assets	(156)	(441)
Accounts payable	6,153	3,983
Accrued expenses and other current liabilities	(2,632)	3,292
Income taxes receivable	(315)	(2,252)
Customer deposits	1,699	474
Other long-term liabilities	(145)
Net cash provided by operating activities	5,668	7,827
Cash flows used in investing activities
Purchase of property and equipment	(402)	(1,371)
Proceeds from disposal of property and equipment	27	15
Net cash used in investing activities	(375)	(1,356)
Cash flows provided by (used in) financing activities
Proceeds from ERP financing		376
Proceeds from (payments on) line of credit, net	(2,486)	26,934
Term loan deferred issuance costs	(250)	(230)
Purchase of treasury stock	(372)	(655)
Payments on notes payable and capital leases	(786)	(705)
Principal payments on long-term debt	(263)	(264)
Net cash provided by (used in) financing activities	(4,157)	25,456
Net increase in cash	1,136	31,927
Cash, beginning of period	2,974	5,002
Cash, end of period	4,110	36,929
Supplemental disclosures of cash flow information
Cash paid for interest	3,006	3,585
Cash paid (refunded) for income taxes, net of refunds	(1,717)	59
Supplemental disclosures of non-cash investing activities
Acquisition of equipment and vehicles with long-term debt and capital leases	$ 404	$ 581

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Total	Class A	Treasury Stock, at Cost	Total Additional Paid-in Capital	Total Retained Earnings (Accumulated Deficit)
Beginning balance at Dec. 31, 2019	$ 161,275	$ 251	$ (391)	$ 161,396	$ 19
Beginning balance, shares at Dec. 31, 2019		25,139,542
Equity-based compensation	(669)			(669)
Issuance of Class A common stock awards	864	$ 1		863
Issuance of Class A common stock awards, shares		69,377
Issuance of Class A common stock due to restricted stock vesting	2	$ 2
Issuance of Class A common stock due to restricted stock vesting, shares		213,339
Repurchase of Class A common stock	(655)		(655)
Net loss	(4,002)				(4,002)
Ending balance at Mar. 31, 2020	156,815	$ 254	(1,046)	161,590	(3,983)
Ending balance, shares at Mar. 31, 2020		25,422,258
Beginning balance at Dec. 31, 2020	154,191	$ 256	(1,279)	165,048	(9,834)
Beginning balance, shares at Dec. 31, 2020		25,609,758
Equity-based compensation	1,194			1,194
Issuance of Class A common stock due to restricted stock vesting	1	$ 1
Issuance of Class A common stock due to restricted stock vesting, shares		121,882
Repurchase of Class A common stock	(372)		(372)
Net loss	(1,805)				(1,805)
Ending balance at Mar. 31, 2021	$ 153,209	$ 257	$ (1,651)	$ 166,242	$ (11,639)
Ending balance, shares at Mar. 31, 2021		25,731,640

Organization and Business Descr

Organization and Business Description	3 Months Ended
Organization and Business Description	Mar. 31, 2021
Accounting Policies [Abstract]
Organization and Business Description	Note 1. Organization and Business Description These financial statements reflect the consolidated operations of Select Interior Concepts, Inc. (“SIC” or the “Company”). SIC is a Delaware corporation that was restructured in November 2017 to be a holding company through which to consolidate diversified building products and services companies. Through its two primary operating subsidiaries and segments, Residential Design Services (“RDS”) and Architectural Surfaces Group (“ASG”), the Company imports and distributes natural and engineered stone slabs for kitchen and bathroom countertops, operates design centers that merchandise interior products, and provides installation services. RDS interior product offerings include flooring, cabinets, countertops and wall tile. RDS operates throughout the United States, including in California, Nevada, Arizona, Idaho, Texas, Virginia, Maryland, North Carolina, and Georgia. ASG has operations in the Northeast, Southeast, Southwest, Midwest, Mountain West, and West Coast regions of the United States.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2 . Summary of Significant Accounting Policies Basis of Presentation and Consolidation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted a ccounting principles in the United States (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in these unaudited interim financial statements and condensed notes should be read in conjunction with the Company’s The condensed consolidated balance sheet as of December 31, 2020 included herein has been derived from the Company’s audited financial statements as of that date, but does not include all disclosures including notes required by GAAP. The condensed consolidated financial statements include the accounts of SIC, its wholly owned subsidiaries, RDS and ASG, and their respective wholly-owned subsidiaries, and are presented in accordance with GAAP. All intercompany accounts and transactions have been eliminated in combination. References to the “ASC” hereafter refer to the Accounting Standards Codification established by the Financial Accounting Standards Board (“FASB”) as the source of authoritative GAAP. The accompanying condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations, and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year ending December 31, 2021. There have been no changes to our significant accounting policies described in our consolidated financial statements and related disclosures as of December 31, 2020 that have had a material impact on our condensed consolidated financial statements and related notes. Earnings (Loss) per Share of Common Stock Basic earnings (loss) per share for the three months ended March 31, 2021 and 2020 are computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding. Diluted earnings per share for common stock is computed by dividing net income by the weighted average number of shares of common stock outstanding plus the dilutive effect of restricted stock-based awards using the treasury stock method. The following table sets forth the computation of basic and diluted earnings/(loss) per share for the three months ended March 31, 2021 and 2020: Three Months Ended Three Months Ended (in thousands, except share and per share data) March 31, 2021 March 31, 2020 Net loss $ (1,805 ) $ (4,002 ) Weighted average shares of common stock outstanding: Basic common stock 25,494,410 25,192,201 Diluted common stock 25,494,410 25,192,201 Loss per share of common stock: Basic common stock $ (0.07 ) $ (0.16 ) Diluted common stock $ (0.07 ) $ (0.16 ) All restricted stock awards outstanding totaling 2,998,047 and 1,478,251 were excluded from the computation of diluted earnings per share in the three months ended March 31, 2021 and 2020, respectively, because the Company reported a net loss and the effect of inclusion would have been antidilutive. Use of Estimates The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, contingencies, and reported revenues and expenses as of and for periods ended on the date of the consolidated financial statements. Actual results may vary materially from the estimates that were used. The Company’s significant accounting estimates include the determination of allowances for doubtful accounts, the lives and methods for recording depreciation and amortization on property and equipment, the fair value of reporting units and indefinite life intangible assets, deferred income taxes and the purchase price allocations used in the Company’s acquisitions. Fair Value Measurement ASC 820-10 requires entities to disclose the fair value of financial instruments, both assets and liabilities recognized and not recognized on the balance sheet for which it is practicable to estimate fair value. ASC 820-10 defines the fair value of a financial instrument as the amount at which the instrument could be exchanged in a current transaction between willing parties. The three levels of the fair value hierarchy are as follows: Level 1—Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the entity has the ability to access. Level 2—Valuations based on quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable data for substantially the full term of the assets or liabilities. Level 3—Valuations based on inputs that are unobservable, supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The level of the fair value hierarchy in which the fair value measurement falls is determined by the lowest level input that is significant to the fair value measurement. At March 31, 2021 and December 31, 2020, the carrying value of the Company’s cash, accounts receivable, accounts payable, and short-term obligations approximate their respective fair values because of the short maturities of these instruments. The recorded values of the line of credit, term loans, and notes payable approximate their fair values, as interest rates approximate market rates. There were no transfers within Level 3 fair value measurements during the three months ended March 31, 2021. Intangible Assets Intangible assets consist of customer relationships, trade names and non-compete agreements. The Company considers all its intangible assets to have definite lives, and such intangible assets are being amortized on the straight-line method over the estimated useful lives of the respective assets or on an accelerated basis based on the expected cash flows generated by the existing customers as follows: Range of estimated useful lives Weighted average useful life Customer relationships 2 years – 15 years 10 years Trade names 3 years – 11 years 8 years Non-compete agreements Life of agreement 4 years Business Combinations The Company records business combinations using the acquisition method of accounting. Under the acquisition method of accounting, identifiable assets acquired and liabilities assumed are recorded at their acquisition date fair values. The excess of the purchase price over the estimated fair value is recorded as goodwill. The measurement period remains open pending the completion of valuation procedures related to the acquired assets and assumed liabilities. Measurement period adjustments are reflected in the period in which they occur. Impairment of Long-Lived Assets The Company reviews the recoverability of its long-lived assets, such as property and equipment and intangible assets, whenever events or changes in circumstances occur that indicate the carrying value of the asset or asset group may not be recoverable, or at least annually. The assessment for possible impairment is based on the Company’s ability to recover the carrying value of the asset or asset group from the expected future undiscounted cash flows of the related operations. If the aggregate of these cash flows is less than the carrying value of such assets, an impairment loss is recognized for the difference between the estimated fair value and the carrying value. The measurement of impairment requires management to estimate future cash flows and the fair value of long-lived assets. There were no impairment losses on long-lived assets for the three-month period ended March 31, 2021 or the year ended December 31, 2020. Goodwill Goodwill represents the excess of the cost of an acquired entity over the fair value of the acquired net assets, including intangible assets. Goodwill is tested annually for impairment as of December 31, and whenever events or circumstances arise that indicate impairment may have occurred. No events or circumstances occurred during the interim period ending March 31, 2021, that required interim testing of goodwill. Revenue Recognition The Company’s revenue derived from the sale of imported granite, marble, and related items, primarily in our ASG operating segment, is recognized at a point in time when control over a product is transferred to a customer. This transfer occurs primarily when goods are picked up by a customer at the branch or when goods are delivered to a customer location. The Company’s contracts with its home builder customers within our RDS operating segment are usually short-term in nature and will generally range in length from several days to several weeks. The Company’s contracts related to multi-family and commercial projects are generally long-term in nature. We recognize revenue from both short-term and long-term contracts for each distinct performance obligation identified over time on a percentage-of-completion basis of accounting, utilizing the output method as a measure of progress, as we believe this represents the best measure of when goods and services are transferred to the customer. Revenue is measured at the transaction price, which is based on the amount of consideration the Company expects to receive in exchange for transferring the promised goods or services to the customer. The transaction price includes estimates of variable consideration, such as any returns and sales incentives. Applicable customer sales taxes, when remitted, are recorded as a liability and excluded from revenue on a net basis. Customer payments may be due in advance of contract work performed, at the time the performance obligation is completed, or with payment terms following performance completion of generally 30-60 days. Shipping and Handling Charges Fees charged to customers for shipping and handling of product are included in revenues. The costs for shipping and handling of product are recorded as a component of cost of revenue. Additionally, we consider shipping and handling costs charged to a customer as a fulfillment cost rather than a promised service and expense as incurred. Equity-based Compensation The Company accounts for equity-based awards by measuring the awards at the date of grant and recognizing the grant-date fair value as an expense using either straight-line or accelerated attribution, depending on the specific terms of the award agreements over the requisite service period, which is usually equivalent to the vesting period. See Note 11 Segment Reporting In accordance with ASC 280-10-50-1, an operating segment is a component of an entity that has all of the following characteristics: a. It engages in business activities from which it may earn revenues and incur expenses; b. Its discrete financial information is available; and c. Its operating results are regularly reviewed by the public entity’s chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance. The Company has identified two operating segments that meet all three of the above criteria, RDS and ASG. Each of these operating segments provides products and services that generate revenue and incur expenses as it engages in business activities, and each maintains discrete financial information. Additionally, the Company’s chief operating decision maker, its Chief Executive Officer, reviews financial performance, approves budgets and allocates resources at each of the RDS and ASG operating segment levels. Recently Issued and Adopted Accounting Pronouncements The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). The JOBS Act permits emerging growth companies to take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies. The Company has elected to use the extended transition period for complying with new or revised accounting standards under Section 107 of the JOBS Act. This election allows the Company to delay the adoption of new or revised accounting standards that have different effective dates for public and private companies until those standards apply to private companies. In August 2018, the FASB issued ASU 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40) No. 2018-15 Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (ASU 2018-15). ASU 2018-15 provides additional guidance on the accounting for costs of implementation activities performed in a cloud computing arrangement that is a service contract. The amendments in ASU 2018-15 align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal use software license). Costs for implementation activities in the application development stage are capitalized depending on the nature of the costs, while costs incurred during the preliminary project and post implementation stages are expensed as the activities are performed. ASU 2018-15 is effective for fiscal years beginning after December 15, 2020. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements and related disclosures. Accounting Pronouncements Issued but Not Yet Adopted In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) Financial Instruments — Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates Revenue from Contracts with Customers (Topic 606) and Leases (Topic 842): Effective Dates for Certain Entities In June 2016, the FASB issued ASU 2016-13, “ Measurement of Credit Losses on Financial Instruments,” Financial Instruments—Credit Losses In November 2019, the FASB issued ASU 2019-10, Financial Instruments — Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates which delays the effective date of ASU 2016-13 until fiscal years beginning after December 15, 2022. The Company is currently evaluating the impact of the provisions of ASU 2016-13 on the presentation of its consolidated financial statements and related disclosures. In January 2017, the FASB issued ASU No. 2017-04, Intangibles — Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment In December 2019, the FASB issued ASU 2019-12, “ Simplifying the Accounting for Income Taxes

Revenue

Revenue	3 Months Ended
Revenue	Mar. 31, 2021
Revenue From Contract With Customer [Abstract]
Revenue	Note 3. Revenue In the fourth quarter of 2019, the Company adopted ASU 2014-09, the new accounting standard under ASC Topic 606, using the modified retrospective method as of January 1, 2019. Contract Balances The timing of revenue recognition, billings, and cash collections results in billed accounts receivable, revenue in excess of billings, customer deposits, and billings in excess of revenue recognized in the Company’s Consolidated Balance Sheets. Contract assets The Company’s contract assets consist of unbilled amounts typically resulting from sales under contracts when the revenue recognized exceeds the amount billed to the customer, generally in the RDS operating segment revenues derived from homebuilders and commercial and multifamily projects. Contract assets are recorded in other current assets in the . The Company had contract assets of $15.7 million and $12.8 million as of March 31, 2021 and December 31, 2020, respectively. The Company’s contract assets generally become unconditional and are reclassified to receivables in the quarter subsequent to each balance sheet date. Contract liabilities The Company records contract liabilities when it receives payment prior to fulfilling a performance obligation or has billings in excess of revenue recognized Company’s Consolidated Balance Sheets Remaining Performance Obligations Remaining performance obligations related to ASC 606 represent the aggregate transaction price allocated to performance obligations with an original contract term greater than one year which are fully or partially unsatisfied at the end of the period, and relate primarily to multi-family or commercial revenue. For the three months ended March 31, 2021 and 2020, multi-family and commercial projects accounted for approximately 4.8% and 2.8% of the Company’s consolidated revenues, respectively. The Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less. Revenue The following table presents net revenue for the RDS operating segment disaggregated by geographical area for the three months ended March 31, 2021 and 2020, respectively: RDS (in thousands) For the Three Months Ended March 31, 2021 % For the Three Months Ended March 31, 2020 % East $ 18,700 23 % $ 19,100 24 % Central 5,500 7 % 4,900 6 % West 56,211 70 % 55,350 70 % $ 80,411 100 % $ 79,350 100 % The East consists of Virginia, Maryland, North Carolina and Georgia; the Central consists of Texas, and the West consists of California, Nevada, Arizona and Idaho. The following table presents net revenue for the ASG operating segment disaggregated by product category for the three months ended March 31, 2021 and 2020, respectively: ASG (in thousands) For the Three Months Ended March 31, 2021 % For the Three Months Ended March 31, 2020 % Quartz $ 36,408 63 % $ 32,636 59 % Stone 15,892 28 % 17,037 30 % Tile 3,174 5 % 3,762 7 % Other 2,332 4 % 2,108 4 % $ 57,806 100 % $ 55,543 100 %

Concentrations, Risks and Uncer

Concentrations, Risks and Uncertainties	3 Months Ended
Concentrations, Risks and Uncertainties	Mar. 31, 2021
Risks And Uncertainties [Abstract]
Concentrations, Risks and Uncertainties	Note 4. Concentrations, Risks and Uncertainties The Company maintains cash balances primarily at one commercial bank. The accounts are insured by the Federal Deposit Insurance Corporation up to $0.25 million. The amounts held at this financial institution generally exceed the federally insured limit. Management believes that this financial institution is financially sound and the risk of loss is minimal. Credit is extended for some customers and is based on financial condition, and generally, collateral is not required. Credit losses are included in the consolidated financial statements and consistently have been within management’s expectations. For the three months ended March 31, 2021 and 2020, there were no customers which accounted for 10.0% or more of the Company’s total revenues. There were no customers which accounted for 10.0% or more of total accounts receivable as of March 31, 2021 or December 31, 2020.

Inventories

Inventories	3 Months Ended
Inventories	Mar. 31, 2021
Inventory Disclosure [Abstract]
Inventories	Note 5 . Inventories Inventories are valued at the lower of cost (using specific identification and first-in first-out methods) or net realizable value. The significant components of inventory consisted of the following at: (in thousands) March 31, 2021 December 31, 2020 Raw materials $ 102,738 $ 97,988 Installations in process 2,501 994 $ 105,239 $ 98,982

Property and Equipment, Net

Property and Equipment, Net	3 Months Ended
Property and Equipment, Net	Mar. 31, 2021
Property Plant And Equipment [Abstract]
Property and Equipment, Net	Note 6 . Property and Equipment, net Property and equipment consisted of the following at: (in thousands) March 31, 2021 December 31, 2020 Vehicles $ 11,461 $ 10,948 Machinery and equipment 9,655 9,588 Leasehold improvements 8,940 9,040 Furniture and fixtures 8,156 8,031 Computer equipment and internal-use software 12,154 11,879 Other 2,000 1,957 52,366 51,443 Less: accumulated depreciation and amortization (32,480 ) (30,387 ) Property and equipment, net $ 19,886 $ 21,056 Depreciation and amortization expense of property and equipment totaled $2.4 million and $2.5 million for the three months ended March 31, 2021 and 2020, respectively. For three months ended March 31, 2021, $0.9 million and $1.5 million of depreciation expense was included in cost of goods sold and general and administrative expense, respectively. For three months ended March 31, 2020, $1.0 million and $1.5 million of depreciation expense was included in cost of goods sold and general and administrative expense, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
Goodwill and Intangible Assets	Mar. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Note 7 . Goodwill and Intangible Assets Goodwill The carrying amount of goodwill by reportable segment was as follows as of March 31, 2021 and December 31, 2020: (in thousands) ASG RDS Total Goodwill $ 45,564 $ 54,225 $ 99,789 Intangible Assets The following table provides the gross carrying amount, accumulated amortization and net book value by reportable segment for each class of intangible assets as of March 31, 2021: (in thousands) ASG RDS Total Gross Carrying Amount Gross Carrying Amount Customer relationships $ 60,180 $ 60,060 $ 120,240 Trade names 7,740 18,090 25,830 Non-compete agreements 50 350 400 $ 67,970 $ 78,500 $ 146,470 (in thousands) ASG RDS Total Accumulated Amortization Accumulated Amortization Customer relationships $ (27,082 ) $ (32,780 ) $ (59,862 ) Trade names (3,343 ) (8,155 ) (11,498 ) Non-compete agreements (35 ) (243 ) (278 ) $ (30,460 ) $ (41,178 ) $ (71,638 ) (in thousands) ASG RDS Total Net Book Value Net Book Value Customer relationships $ 33,098 $ 27,280 $ 60,378 Trade names 4,397 9,935 14,332 Non-compete agreements 15 107 122 $ 37,510 $ 37,322 $ 74,832 The following table provides the gross carrying amount, accumulated amortization and net book value by reportable segment for each class of intangible assets as of December 31, 2020: (in thousands) ASG RDS Total Gross Carrying Amount Gross Carrying Amount Customer relationships $ 60,180 $ 60,060 $ 120,240 Trade names 7,740 18,090 25,830 Non-compete agreements 50 350 400 $ 67,970 $ 78,500 $ 146,470 (in thousands) ASG RDS Total Accumulated Amortization Accumulated Amortization Customer relationships $ (25,548 ) $ (31,992 ) $ (57,540 ) Trade names (3,139 ) (7,522 ) (10,661 ) Non-compete agreements (33 ) (222 ) (255 ) $ (28,720 ) $ (39,736 ) $ (68,456 ) (in thousands) ASG RDS Total Net Book Value Net Book Value Customer relationships $ 34,632 $ 28,068 $ 62,700 Trade names 4,601 10,568 15,169 Non-compete agreements 17 128 145 $ 39,250 $ 38,764 $ 78,014 Amortization expense on intangible assets totaled $3.2 million and $3.2 million during the three months ended March 31, 2021 and 2020, respectively. The estimated annual amortization expense for the next five years and thereafter is as follows: (in thousands) 2021 Remaining $ 9,421 2022 12,401 2023 12,038 2024 10,313 2025 9,580 Thereafter 21,079 $ 74,832

Lines of Credit

Lines of Credit	3 Months Ended
Lines of Credit	Mar. 31, 2021
Line Of Credit Facility [Abstract]
Lines of Credit	Note 8. Lines of Credit SIC Line of Credit In June 2018, the Company and certain of its subsidiaries entered into an amended and restated loan, security and guaranty agreement, dated as of June 28, 2018, which was amended on December 11, 2018, July 23, 2019 and August 19, 2019 (“SIC Credit Facility”), with a commercial bank, which amended and restated each of the RDS credit agreement and the ASG credit agreement in their entirety. The SIC Credit Facility is primarily used by the Company, including both RDS and ASG, for operational purposes. Pursuant to the SIC Credit Facility, the Company has a borrowing-base-governed revolving credit facility that provides for borrowings in an initial amount up to an aggregate of $90 million, which was increased to $100 million through the amendment entered into on August 19, 2019. Under the terms of the SIC Credit Facility, the Company has the ability to request the issuance of letters of credit up to a maximum aggregate stated amount of $15 million. The ability to borrow revolving loans under the SIC Credit Facility is reduced on a dollar-for-dollar basis by the aggregate stated amount of all outstanding letters of credit. The indebtedness outstanding under the SIC Credit Facility is secured by substantially all of the assets of the Company and its subsidiaries. The revolving loans under the SIC Credit Facility bear interest at a floating rate, which the Company can elect between a LIBOR based rate plus an applicable margin varying from one hundred twenty five basis points (1.25%) to one hundred seventy five basis points (1.75%) based on the borrowers’ average daily availability determined quarterly, or a base rate (determined as the greatest of the Prime rate, the Federal Funds rate plus a fifty basis point (0.50%) margin, or the LIBOR rate with a 30 day interest period plus a two hundred basis point (2.00%) margin) plus an applicable margin varying from twenty five basis points (0.25%) to seventy five basis points (0.75%) based on the borrowers’ average daily availability determined quarterly. Upon the occurrence of certain events of default under the SIC Credit Facility, the interest rate applicable to the obligations thereunder may be increased by two hundred basis points (2.00%). The weighted average interest rate assessed during the three months ended March 31, 2021, on the SIC Credit Facility was 1.6%. All revolving loans under the SIC Credit Facility are due and payable in full on June 28, 2023, subject to earlier acceleration upon certain conditions. Letter of credit obligations under the SIC Credit Facility are due and payable on the date set forth in the respective loan documents or upon demand by the lender. Under the SIC Credit Facility, the Company and its subsidiaries are required to comply with certain customary restrictive covenants that, among other things and with certain exceptions, limit the ability of the Company and its subsidiaries, as applicable, to (i) incur additional indebtedness and liens in connection therewith, (ii) pay dividends and make certain other restricted payments, (iii) effect mergers or consolidations, (iv) enter into transactions with affiliates, (v) sell or dispose of property or assets, and (vi) engage in unrelated lines of business. As of March 31, 2021 and December 31, 2020, $7.4 million and $9.9 million, respectively, were outstanding under the SIC Credit Facility. The Company also has $0.6 million in letters of credit outstanding at March 31, 2021. The SIC Credit Facility is subject to certain financial covenants. At March 31, 2021, the Company was in compliance with the financial covenants. The Company incurred debt issuance costs of $0.5 million in connection with the SIC Credit Facility. These costs are amortized to non-cash interest expense over the term of the agreement on a straight-line basis which approximates the effective interest method. Non-cash interest expense related to these costs were less than $0.1 million for the three months ended March 31, 2021 and 2020. At March 31, 2021 and December 31, 2020, SIC had $0.2 million of unamortized debt issuance costs related to the SIC Credit Facility. These costs are shown as a direct deduction of the line of credit liability in the accompanying condensed consolidated balance sheets.

Long-Term Debt

Long-Term Debt	3 Months Ended
Long-Term Debt	Mar. 31, 2021
Debt Disclosure [Abstract]
Long-Term Debt	Note 9 . Long-Term Debt Long-term debt consisted of the following: (in thousands) March 31, 2021 December 31, 2020 RDS equipment and vehicle notes $ 126 $ 141 ASG term loans 152,511 152,773 152,637 152,914 Unamortized debt issuance costs (2,696 ) (2,765 ) Total long-term debt 149,941 150,149 Current portion of long-term debt, net of financing fees $ 15,571 $ 15,623 Long-term debt, net of current portion and financing fees $ 134,370 $ 134,526 RDS Equipment and Vehicle Notes RDS has financed the acquisition of certain vehicles, property, and equipment with notes payable that mature at various times through May 2024 ASG Term Loans In December 2015, ASG entered into a loan agreement providing a term loan in the aggregate amount of $1.7 million to finance the purchase of equipment. Amounts due under the term loan bear interest at 3.75% per annum with interest payable monthly. Principal payments are due in monthly installments beginning April 8, 2016 through maturity (March 8, 2021). ASG paid off the remaining balance of the loan during 2020. On February 28, 2017, AG&M and Pental, as the borrowers, entered into a financing agreement, as amended, with third party lenders (the “Term Loan Facility”), which initially provided for a $105.0 million term loan facility. The Term Loan Facility was amended in June 2018 to define the borrowers as Select Interior Concepts, Inc. and its subsidiaries, was further amended in August 2018 to adjust the borrowing capacity to $101.4 million and was further amended in December 2018 to increase the borrowing capacity to $174.2 million. On February 7, 2020, On March 10, 2021, the Term Loan Facility was further amended to adjust the required leverage ratio (as defined in the Term Loan Facility). The required leverage ratio as of March 31, 2021, and each fiscal quarter ending thereafter was increased from 3.75:1.00 to 4.00:1.00. On April 8, 2020, the Term Loan Facility was further amended , which amendment, among other things, (i) waived the requirement that the Company prepay the Term Loans with Excess Cash Flow (as defined in the Term Loan Facility) then due for payment in respect of the fiscal year ending December 31, 2019, (ii) amended the Fixed Charge Coverage Ratio (as defined in the Term Loan Facility) covenant applicable to the fiscal year ending December 31, 2020, to be tested on a monthly basis and requires the Company and its subsidiaries to maintain a reduced Fixed Charge Coverage Ratio (as defined in the Term Loan Facility) of not less than 1.00:1.00 for each month during such fiscal year, and (iii) does not require the Company to test the Total Leverage (as defined in the Term Loan Facility) covenant effective as of the execution date of April 8, 2020, through and including December 31, 2020, for any fiscal quarter end during such period, for so long as the Company and its subsidiaries maintain Financial Covenant Availability (as defined in the Term Loan Facility) of not less than $35 million at all times during such fiscal quarter. Borrowings under the Term Loan Facility bear interest per year equal to either: (i) the base rate plus 4.75% for a base rate loan, or (ii) the LIBOR rate plus 6.75% for a LIBOR loan in the event the leverage ratio is greater than 2.40:1.00. In the event the leverage ratio is less than 2.40:1.00, the rates decrease to either (i) the base rate plus 4.25% for a base rate loan or (ii) the LIBOR rate plus 6.25% for a LIBOR loan. The base rate is the greater of (i) the publicly announced interest rate by the reference bank as its reference rate, the base commercial lending rate or prime rate, and (ii) 3.5% per annum. The interest rate assessed as of March 31, 2021, was 7.5%. In addition, the Term Loan Facility also requires the Company to prepay amounts outstanding, subject to certain exceptions (and, with respect to clauses (i) and (ii) below, certain limited reinvestment rights), with: (i) 100% of the net proceeds of any asset disposition in excess of $0.75 million in any fiscal year, (ii) 100% of any insurance or condemnation awards that are greater than $2.5 million, (iii) 100% of the net proceeds of any equity issuances, (iv) 100% of the net proceeds of any issuance of indebtedness (other than certain permitted indebtedness), and (v) 100% of any net cash proceeds received outside the ordinary course of business. The estimated prepayment amount due under the terms of the agreement in 2021 is $15.7 million, which is classified within the current portion of long-term debt on the consolidated balance sheet as of March 31, 2021 and December 31, 2020. Substantially all of the Company’s assets, including accounts receivable and inventory, are collateral for the Term Loan Facility, except assets identified as collateral for the SIC Credit Facility which hold a senior position. The Company is also restricted from paying dividends to its stockholders. Additionally, substantially all of the Company’s subsidiaries are restricted by the Term Loan Facility from providing loans, advances and dividends to the SIC parent company. The Company is required to meet certain covenants pursuant to these term loans. The Company was in compliance with all financial covenants as of March 31, 2021, and December 31, 2020. The Company incurred debt issuance costs in connection with its term loans. These costs are being amortized to non-cash interest expense over the terms of the related notes on a straight-line basis, which approximates the effective interest rate method. Non-cash interest expense related to these costs was $0.1 million and $0.1 million for the three months ended March 31, 2021 and 2020, respectively. At March 31, 2021, and December 31, 2020, the unamortized debt issuance costs related to the term loans totaled $2.7 million and $2.8 million, respectively, and are shown as a direct deduction from the liability on the accompanying condensed consolidated balance sheets.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 10 . Commitments and Contingencies Leases The Company leases certain vehicles under leases classified as capital leases. The leased vehicles are included as property and equipment (“PP&E”) and amortized to accumulated amortization on a straight-line basis over the life of the lease, which is typically four years. The total acquisition cost included in PP&E related to the leased vehicles was $12.7 million and $12.3 million at March 31, 2021 and December 31, 2020, respectively. Total accumulated amortization related to the leased vehicles is $4.5 million and $3.7 million at March 31, 2021 and December 31, 2020, respectively. Amortization expense was $0.8 million and $0.3 million for the three months ended March 31, 2021 and 2020, respectively. Included in the capital lease balances is approximately $3.1 million of assets that were sold and subsequently leased back during 2019 and in the first quarter of 2020 related to certain ERP software and equipment. The transaction did not qualify for sale-leaseback accounting and no sale was recognized. Proceeds received in the first quarter of 2020 from the transaction were reported as a financing activity in the statement of cash flows for the three months ended March 31, 2020. RDS leases its corporate, administrative, fabrication and warehousing facilities under long-term non-cancelable operating lease agreements expiring at various dates through March 2026. The monthly rents are subject to annual increases and generally require the payment of utilities, real estate taxes, insurance and repairs. Three of RDS’ facility leases are with a company owned by a Company stockholder and five other facilities are leased from current employees, contractors or former owners of acquired businesses. RDS also leases certain office equipment under long-term non-cancellable operating lease agreements expiring at various dates through September 2022. ASG leases its facilities and equipment under long-term non-cancellable operating lease agreements expiring at various dates through December 2029. The facility leases contain predetermined fixed escalations of the minimum rentals. One of ASG’s facility leases is with a related party. SIC leases its corporate facilities under a long-term non-cancelable operating lease through October 2022. The Company recognizes rent expense on a straight-line basis and records the difference between the recognized rent expense and amounts payable under the lease as deferred rent. Aggregate deferred rent at March 31, 2021 and December 31, 2020 was $1.8 million and $1.9 million, respectively. Aggregate rent expense for the three months ended March 31, 2021 and 2020, respectively, totaled $4.8 million and $5.0 million, respectively. Litigation The Company experiences routine litigation in the normal course of its business. Production residential builders in California are primarily sued for alleged construction defects. As a practice, residential builders name all Indemnification In the normal course of business, the Company enters into contracts and agreements that contain a variety of representations and warranties and provide for general indemnifications, including to lessors of office and warehouse space for certain actions arising during the Company’s tenancy and to the Company’s customers. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future but have not yet been made. To date, the Company has not paid any claims or been required to defend any action related to its indemnification obligations. However, the Company may record charges in the future as a result of these indemnification obligations. Exclusive Distributor Rights A main quartz supplier of ASG’s Pental business has granted ASG exclusive distribution rights in 23 states in the United States. To maintain these rights, ASG must meet certain minimum purchase requirements. ASG was required to purchase between 480 and 540 containers during the year ended December 31, 2020. Minimum purchase volumes then increase to 645 containers per quarter during 2021 up to 1,332 containers per quarter during 2025. Using an estimated price per container based on the average price per container in 2020, the future minimum purchases to maintain the exclusive rights as of March 31, 2021 are as follows: (in thousands) Amount Remaining in 2021 $ 68,779 2022 102,186 2023 121,837 2024 145,419 2025 174,502 Thereafter — $ 612,723 If ASG does not purchase at least eighty percent (80%) of the minimum purchase volumes for two consecutive quarters, or at least ninety percent (90%) of the minimum purchase volumes in any calendar year, the supplier has the right to terminate ASG’s exclusive distribution rights. There are no financial penalties to ASG if such commitments are not met; however, the supplier reserves the right to terminate the exclusive distribution rights. For the year ended December 31, 2020, ASG did not meet the eighty percent (80%) minimum purchase volume threshold primarily as a result of the challenging economic and business environment resulting from COVID-19 during 2020. ASG and the supplier have discussed the impact of the current economic environment on the minimum purchase volumes and have reached an informal understanding around reduced purchase volumes. The supplier must give 60 days notice to terminate this exclusivity arrangement, which has not been received by the Company. While ASG maintains good relationships with this supplier and believes that it would be unlikely that such supplier would terminate the exclusive relationship, there is no guarantee that such supplier will not terminate the exclusive relationship in the future due to ASG’s failure to purchase the minimum volumes. As part of our supply chain management program, we routinely identify, evaluate and purchase from alternative sources of quartz products; however, depending on factors such as timing, notice, and industry capacity, in the event the supplier were to terminate ASG’s distribution rights it could have a material impact on ASG’s supply chain and ASG may be unable to find an alternative source for quartz in a timely manner or on favorable terms.

Stock Compensation

Stock Compensation	3 Months Ended
Stock Compensation	Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Compensation	Note 11 . Stock Compensation On November 22, 2017, the Company adopted the Select Interior Concepts, Inc. 2017 Incentive Compensation Plan (the “2017 Plan”). Upon the adoption of the 2017 Plan, the maximum aggregate number of shares issuable thereunder was 2,561,463 shares. As of March 31, 2021, there were 1,661,047 shares of the Company’s common stock subject to outstanding awards and 9,439 shares of the Company’s common stock were reserved and available for future awards under the 2017 Plan. On March 26, 2019, the board of directors adopted the Select Interior Concepts, Inc. 2019 Long-Term Incentive Plan (the “2019 Incentive Plan”), which was approved at the 2019 Annual Meeting of Stockholders on May 15, 2019. The 2019 Incentive Plan serves as the successor to the 2017 Plan; however, shares continued to be available for award grants under the 2017 Plan following the effectiveness of the 2019 Incentive Plan. The maximum aggregate number of shares issuable under the 2019 Incentive Plan is 1,700,000. As of March 31, 2021, there were 112,000 shares of the Company’s common stock subject to outstanding awards and 1,588,000 shares of the Company’s common stock were reserved and available for future awards under the 2019 Plan The 2017 Plan and the 2019 Incentive Plan (collectively, “the Plans”), permit the grant of incentive stock options to employees and the grant of nonstatutory stock options, performance awards, restricted stock, restricted stock units, stock appreciation rights, and other stock-based awards to the Company’s employees, directors and consultants at the sole discretion of the Company’s Compensation Committee of the board of directors. Stock Options The Company has not granted any stock options under the Plans. Restricted Stock and Restricted Stock Units Restricted stock awards and restricted stock unit awards are grants of shares of the Company’s common stock or rights to receive shares of the Company’s common stock that are subject to various restrictions, including restrictions on transferability, vesting and forfeiture provisions. Recipients of restricted stock awards generally will have voting and dividend rights with respect to such shares prior to vesting, subject to such awards’ forfeiture provisions, unless the board of directors provides otherwise. Recipients of restricted stock unit awards generally will not have voting and dividend rights unless and until shares of common stock are issued with respect to such awards. Shares of restricted stock that do not vest for any reason will be forfeited by the recipient and will revert to the Company. For the three months ended March 31, 2021, 620,000 restricted stock units were granted under the Plans to certain directors, executives, and key employees. Certain of these restricted stock units included a market condition under ASC 718 “Compensation – Stock Compensation.” During the three months ended March 31, 2019, restricted stock units were granted to certain executives and included both a service and a performance condition. The performance condition was achievement of a 2021 earnings target and the level of achievement of the earnings target would determine the number of shares to be issued. In the first quarter of 2020, the performance condition for these shares that was deemed probable of vesting as of December 31, 2019, was determined to be no longer probable of vesting. This resulted in a reversal of stock compensation expense of approximately $1.6 million recorded during the three months ended March 31, 2020. In the third quarter of 2020, the majority of these performance awards were cancelled, with the remainder being cancelled during the fourth quarter of 2020. In connection with the appointment of certain executive officers in 2020, the Company awarded 675,000 time-based restricted stock units and 675,000 performance-based restricted stock units in total to the new executive officers. All of these restricted stock units were granted to these new executives as inducement awards in accordance with NASDAQ Listing Rule 5635(c)(4) and were not granted under the Plans. The time-based restricted stock units vest in equal annual installments over four years, subject to continued employment with the Company. The performance-based restricted stock units contain market conditions based on the closing price of the Company’s common stock exceeding specific price hurdles for 20 consecutive trading days, and subject to continued employment with the Company. Total outstanding inducement awards as of March 31, 2021, and December 31, 2020, were 1,225,000 and 1,350,000, respectively. These inducement awards are not included in the table below. The Company estimated the fair value of all shares granted on the date the shares were granted and recognizes the resulting fair value over the requisite service period. The grant date fair value for the restricted stock units issued during the three months ended March 31, 2021 was determined using the closing share price on the date of grant. For shares issued with a market condition, the Monte Carlo simulation model was used to determine the fair value of the award. Inputs into the Monte Carlo simulation model for applicable awards during the three months ended March 31, 2021, included a dividend yield of 0%, an expected volatility rate of 72.54%, and a risk-free rate of 0.51%. A summary of the Company’s restricted stock activity for the Plans for the three months ended March 31, 2021 is as follows: Nonvested Shares Outstanding Weighted Average Grant Date Fair Value Nonvested shares at January 1, 2021 1,447,419 $ 5.33 Granted 620,000 $ 8.80 Forfeited 198,532 $ 11.08 Vested 95,840 $ 11.12 Nonvested shares at March 31, 2021 1,773,047 $ 6.50 As of March 31, 2021, total remaining stock-based compensation expense for nonvested restricted stock units is $13.5 million, which is expected to be recognized over a weighted average remaining period of 3.1 years. Total stock-based compensation expense (benefit) recognized for restricted stock units for the three months ended March 31, 2021 and 2020 was $1.2 million and $(0.7) million, respectively. Phantom Stock Phantom stock awards are grants of phantom stock with respect to shares of the Company’s common stock that are settled in cash and subject to various restrictions, including restrictions on transferability, vesting and forfeiture provisions. Shares of phantom stock that do not vest for any reason will be forfeited by the recipient and will revert to the Company. The Company did not record any phantom stock-based compensation expense during the three months ended March 31, 2021. The Company recorded phantom stock-based compensation expense of less than $0.01 million during the three months ended March 31, 2020. There were no outstanding phantom shares as of December 31, 2020.

Provision for Income Taxes

Provision for Income Taxes	3 Months Ended
Provision for Income Taxes	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Provision for Income Taxes	Note 12. Provision for Income Taxes The Company determines its periodic income tax benefit or expense based upon the current period income and the annual estimated tax rate for the Company adjusted for discrete items. The estimated tax rate is revised, if necessary, as of the end of each successive interim period during the fiscal year to the Company’s current annual estimated tax rate. For the three months ended March 31, 2021, the effective tax rate of 70.09% increased compared to the effective tax rate of 44.76% for the three months ended March 31, 2020, due to the impact of discrete items in relation to the amount of the Company’s pre-tax earnings. The discrete items include unrecognized tax benefits related to the TAC acquisition and unfavorable adjustments resulting from ASU 2016-09, which requires excess tax benefits and deficiencies related to stock compensation to be recognized as a component of income tax expense rather than stockholders’ equity. In response to the global impacts of COVID-19 on U.S. companies and citizens, the federal government enacted the CARES Act on March 27, 2020. The CARES Act included several temporary tax relief provisions for companies, including modifications to the interest deduction limitation and a five-year net operating loss carryback. In response to these tax relief provisions, the Company adjusted its deferred tax asset related to the interest limitation and anticipates carrying back any net operating loss generated in 2020 to prior tax periods.

Related Party Transactions

Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Note 13. Related Party Transactions Facility Rent RDS leases three of its facilities from a trust affiliated with a Company stockholder. Additionally, as a result of recent acquisitions, RDS also leases five of its facilities from current employees, contractors or former owners of acquired businesses. Rent expense under related party leases totaled $0.5 million and $0.5 million for the three months ended March 31, 2021 and 2020, respectively. See Note 10 ASG leases office space from 521 Digiulian Boulevard, LLC, a company owned by a current employee. Rent expense under this lease was $0.04 million and $0.03 million for the three months ended March 31, 2021 and 2020, respectively. No amounts were unpaid under this lease at March 31, 2021 and December 31, 2020. S Note 10 Subcontractors and Suppliers Two RDS employees have family members that have an ownership interest in a flooring subcontracting compan y that does business with RDS. During the three months ended March 31, 202 1 and 2020 , th i s compan y performed a total of $ 0.2 million and $ 0.2 million in subcontract work for RDS , respectively . Amounts due and recorded as accounts payable at March 31 , 202 1 and December 31, 20 20 w ere less than $ 0.1 million , respectively .

Segment Information

Segment Information	3 Months Ended
Segment Information	Mar. 31, 2021
Segment Reporting [Abstract]
Segment Information	Note 14. Segment Information The Company’s operations are classified into two operating segments: RDS and ASG. Under RDS, the Company offers interior design and installation services, and under ASG, the Company offers natural and engineered surfaces distribution services. These operating segments represent strategic business areas which, although they operate separately and provide their own distinctive services, enable the Company to more effectively offer the complete line of interior design and selection services, merchandising, and complex supply chain management. Neither of the two operating segments have any reporting units. While individual acquisitions, for a time, may have discrete financial information before being fully integrated, RDS and ASG are the only operating and reporting segments for which both discrete financial information is available and is reviewed by the Company’s chief operating decision maker. Inter-segment eliminations result, primarily, from the sale of ASG inventory to the RDS segment, including the related profit margin, as well as some intercompany borrowings recorded in the form of intercompany payables and receivables. In addition, certain costs incurred at a corporate level or at the reporting unit level that benefit the segments are not allocated. These costs include: corporate payroll costs, legal, professional service fees, interest expense, including amortization of deferred financing costs, taxes and equity-based compensation. Information for the periods presented is provided below: Three Months Ended March 31, (in thousands) 2021 2020 Revenue, net: RDS $ 80,411 $ 79,350 ASG 57,806 55,543 Elimination of intercompany sales (430 ) (515 ) Consolidated total $ 137,787 $ 134,378 Operating income (loss): RDS $ 73 $ (1,607 ) ASG 5,251 2,540 Elimination of intercompany activity 15 10 Unallocated corporate operating loss (5,839 ) (2,916 ) Consolidated total $ (500 ) $ (1,973 ) Capital expenditures: RDS $ 225 $ 606 ASG 177 766 Unallocated corporate capital expenditures — — Consolidated total $ 402 $ 1,372 As of March 31, As of December 31, (in thousands) 2021 2020 Goodwill: RDS $ 54,225 $ 54,225 ASG 45,564 45,564 Consolidated total $ 99,789 $ 99,789 Other intangible assets, net: RDS $ 37,322 $ 38,764 ASG 37,510 39,250 Consolidated total $ 74,832 $ 78,014 Total assets: RDS $ 189,406 $ 193,488 ASG 200,785 198,341 Consolidation entries 155 40 Unallocated assets, including corporate 13,538 13,139 Consolidated total $ 403,884 $ 405,008

Subsequent Events

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Note 15. Subsequent Events Events occurring after March 31, 2021, have been evaluated for possible adjustment to the condensed consolidated financial statements or disclosure as of May 6, 2021, which is the date the condensed consolidated financial statements were available to be issued. The Company continues to evaluate the impact of COVID-19 on its operations, although the ultimate extent to which COVID-19 impacts our business, results of operations, liquidity and financial condition will depend on future developments, which are highly uncertain.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted a ccounting principles in the United States (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in these unaudited interim financial statements and condensed notes should be read in conjunction with the Company’s The condensed consolidated balance sheet as of December 31, 2020 included herein has been derived from the Company’s audited financial statements as of that date, but does not include all disclosures including notes required by GAAP. The condensed consolidated financial statements include the accounts of SIC, its wholly owned subsidiaries, RDS and ASG, and their respective wholly-owned subsidiaries, and are presented in accordance with GAAP. All intercompany accounts and transactions have been eliminated in combination. References to the “ASC” hereafter refer to the Accounting Standards Codification established by the Financial Accounting Standards Board (“FASB”) as the source of authoritative GAAP. The accompanying condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations, and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year ending December 31, 2021. There have been no changes to our significant accounting policies described in our consolidated financial statements and related disclosures as of December 31, 2020 that have had a material impact on our condensed consolidated financial statements and related notes.
Earnings (Loss) per Share of Common Stock	Earnings (Loss) per Share of Common Stock Basic earnings (loss) per share for the three months ended March 31, 2021 and 2020 are computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding. Diluted earnings per share for common stock is computed by dividing net income by the weighted average number of shares of common stock outstanding plus the dilutive effect of restricted stock-based awards using the treasury stock method. The following table sets forth the computation of basic and diluted earnings/(loss) per share for the three months ended March 31, 2021 and 2020: Three Months Ended Three Months Ended (in thousands, except share and per share data) March 31, 2021 March 31, 2020 Net loss $ (1,805 ) $ (4,002 ) Weighted average shares of common stock outstanding: Basic common stock 25,494,410 25,192,201 Diluted common stock 25,494,410 25,192,201 Loss per share of common stock: Basic common stock $ (0.07 ) $ (0.16 ) Diluted common stock $ (0.07 ) $ (0.16 ) All restricted stock awards outstanding totaling 2,998,047 and 1,478,251 were excluded from the computation of diluted earnings per share in the three months ended March 31, 2021 and 2020, respectively, because the Company reported a net loss and the effect of inclusion would have been antidilutive.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, contingencies, and reported revenues and expenses as of and for periods ended on the date of the consolidated financial statements. Actual results may vary materially from the estimates that were used. The Company’s significant accounting estimates include the determination of allowances for doubtful accounts, the lives and methods for recording depreciation and amortization on property and equipment, the fair value of reporting units and indefinite life intangible assets, deferred income taxes and the purchase price allocations used in the Company’s acquisitions.
Fair Value Measurement	Fair Value Measurement ASC 820-10 requires entities to disclose the fair value of financial instruments, both assets and liabilities recognized and not recognized on the balance sheet for which it is practicable to estimate fair value. ASC 820-10 defines the fair value of a financial instrument as the amount at which the instrument could be exchanged in a current transaction between willing parties. The three levels of the fair value hierarchy are as follows: Level 1—Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the entity has the ability to access. Level 2—Valuations based on quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable data for substantially the full term of the assets or liabilities. Level 3—Valuations based on inputs that are unobservable, supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The level of the fair value hierarchy in which the fair value measurement falls is determined by the lowest level input that is significant to the fair value measurement. At March 31, 2021 and December 31, 2020, the carrying value of the Company’s cash, accounts receivable, accounts payable, and short-term obligations approximate their respective fair values because of the short maturities of these instruments. The recorded values of the line of credit, term loans, and notes payable approximate their fair values, as interest rates approximate market rates. There were no transfers within Level 3 fair value measurements during the three months ended March 31, 2021.
Intangible Assets	Intangible Assets Intangible assets consist of customer relationships, trade names and non-compete agreements. The Company considers all its intangible assets to have definite lives, and such intangible assets are being amortized on the straight-line method over the estimated useful lives of the respective assets or on an accelerated basis based on the expected cash flows generated by the existing customers as follows: Range of estimated useful lives Weighted average useful life Customer relationships 2 years – 15 years 10 years Trade names 3 years – 11 years 8 years Non-compete agreements Life of agreement 4 years
Business Combinations	Business Combinations The Company records business combinations using the acquisition method of accounting. Under the acquisition method of accounting, identifiable assets acquired and liabilities assumed are recorded at their acquisition date fair values. The excess of the purchase price over the estimated fair value is recorded as goodwill. The measurement period remains open pending the completion of valuation procedures related to the acquired assets and assumed liabilities. Measurement period adjustments are reflected in the period in which they occur.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets The Company reviews the recoverability of its long-lived assets, such as property and equipment and intangible assets, whenever events or changes in circumstances occur that indicate the carrying value of the asset or asset group may not be recoverable, or at least annually. The assessment for possible impairment is based on the Company’s ability to recover the carrying value of the asset or asset group from the expected future undiscounted cash flows of the related operations. If the aggregate of these cash flows is less than the carrying value of such assets, an impairment loss is recognized for the difference between the estimated fair value and the carrying value. The measurement of impairment requires management to estimate future cash flows and the fair value of long-lived assets. There were no impairment losses on long-lived assets for the three-month period ended March 31, 2021 or the year ended December 31, 2020.
Goodwill	Goodwill Goodwill represents the excess of the cost of an acquired entity over the fair value of the acquired net assets, including intangible assets. Goodwill is tested annually for impairment as of December 31, and whenever events or circumstances arise that indicate impairment may have occurred. No events or circumstances occurred during the interim period ending March 31, 2021, that required interim testing of goodwill.
Revenue Recognition	Revenue Recognition The Company’s revenue derived from the sale of imported granite, marble, and related items, primarily in our ASG operating segment, is recognized at a point in time when control over a product is transferred to a customer. This transfer occurs primarily when goods are picked up by a customer at the branch or when goods are delivered to a customer location. The Company’s contracts with its home builder customers within our RDS operating segment are usually short-term in nature and will generally range in length from several days to several weeks. The Company’s contracts related to multi-family and commercial projects are generally long-term in nature. We recognize revenue from both short-term and long-term contracts for each distinct performance obligation identified over time on a percentage-of-completion basis of accounting, utilizing the output method as a measure of progress, as we believe this represents the best measure of when goods and services are transferred to the customer. Revenue is measured at the transaction price, which is based on the amount of consideration the Company expects to receive in exchange for transferring the promised goods or services to the customer. The transaction price includes estimates of variable consideration, such as any returns and sales incentives. Applicable customer sales taxes, when remitted, are recorded as a liability and excluded from revenue on a net basis. Customer payments may be due in advance of contract work performed, at the time the performance obligation is completed, or with payment terms following performance completion of generally 30-60 days.
Shipping and Handling Charges	Shipping and Handling Charges Fees charged to customers for shipping and handling of product are included in revenues. The costs for shipping and handling of product are recorded as a component of cost of revenue. Additionally, we consider shipping and handling costs charged to a customer as a fulfillment cost rather than a promised service and expense as incurred.
Equity-based Compensation	Equity-based Compensation The Company accounts for equity-based awards by measuring the awards at the date of grant and recognizing the grant-date fair value as an expense using either straight-line or accelerated attribution, depending on the specific terms of the award agreements over the requisite service period, which is usually equivalent to the vesting period. See Note 11
Segment Reporting	Segment Reporting In accordance with ASC 280-10-50-1, an operating segment is a component of an entity that has all of the following characteristics: a. It engages in business activities from which it may earn revenues and incur expenses; b. Its discrete financial information is available; and c. Its operating results are regularly reviewed by the public entity’s chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance. The Company has identified two operating segments that meet all three of the above criteria, RDS and ASG. Each of these operating segments provides products and services that generate revenue and incur expenses as it engages in business activities, and each maintains discrete financial information. Additionally, the Company’s chief operating decision maker, its Chief Executive Officer, reviews financial performance, approves budgets and allocates resources at each of the RDS and ASG operating segment levels.
Recently Issued and Adopted Accounting Pronouncements	Recently Issued and Adopted Accounting Pronouncements The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). The JOBS Act permits emerging growth companies to take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies. The Company has elected to use the extended transition period for complying with new or revised accounting standards under Section 107 of the JOBS Act. This election allows the Company to delay the adoption of new or revised accounting standards that have different effective dates for public and private companies until those standards apply to private companies. In August 2018, the FASB issued ASU 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40) No. 2018-15 Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (ASU 2018-15). ASU 2018-15 provides additional guidance on the accounting for costs of implementation activities performed in a cloud computing arrangement that is a service contract. The amendments in ASU 2018-15 align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal use software license). Costs for implementation activities in the application development stage are capitalized depending on the nature of the costs, while costs incurred during the preliminary project and post implementation stages are expensed as the activities are performed. ASU 2018-15 is effective for fiscal years beginning after December 15, 2020. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements and related disclosures. Accounting Pronouncements Issued but Not Yet Adopted In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) Financial Instruments — Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates Revenue from Contracts with Customers (Topic 606) and Leases (Topic 842): Effective Dates for Certain Entities In June 2016, the FASB issued ASU 2016-13, “ Measurement of Credit Losses on Financial Instruments,” Financial Instruments—Credit Losses In November 2019, the FASB issued ASU 2019-10, Financial Instruments — Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates which delays the effective date of ASU 2016-13 until fiscal years beginning after December 15, 2022. The Company is currently evaluating the impact of the provisions of ASU 2016-13 on the presentation of its consolidated financial statements and related disclosures. In January 2017, the FASB issued ASU No. 2017-04, Intangibles — Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment In December 2019, the FASB issued ASU 2019-12, “ Simplifying the Accounting for Income Taxes

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
Summary of Significant Accounting Policies (Tables)	Mar. 31, 2021
Accounting Policies [Abstract]
Schedule of Computation of Basic and Diluted Earnings/(Loss) per Share	The following table sets forth the computation of basic and diluted earnings/(loss) per share for the three months ended March 31, 2021 and 2020: Three Months Ended Three Months Ended (in thousands, except share and per share data) March 31, 2021 March 31, 2020 Net loss $ (1,805 ) $ (4,002 ) Weighted average shares of common stock outstanding: Basic common stock 25,494,410 25,192,201 Diluted common stock 25,494,410 25,192,201 Loss per share of common stock: Basic common stock $ (0.07 ) $ (0.16 ) Diluted common stock $ (0.07 ) $ (0.16 )
Schedule of Estimated Useful Lives Definite Lived Intangible Assets	The Company considers all its intangible assets to have definite lives, and such intangible assets are being amortized on the straight-line method over the estimated useful lives of the respective assets or on an accelerated basis based on the expected cash flows generated by the existing customers as follows: Range of estimated useful lives Weighted average useful life Customer relationships 2 years – 15 years 10 years Trade names 3 years – 11 years 8 years Non-compete agreements Life of agreement 4 years

Revenue (Tables)

Revenue (Tables)	3 Months Ended
Revenue (Tables)	Mar. 31, 2021
Residential Design Services
Disaggregation Of Revenue [Line Items]
Summary of Net Revenue Disaggregated by Geographical Area and Product Category	The following table presents net revenue for the RDS operating segment disaggregated by geographical area for the three months ended March 31, 2021 and 2020, respectively: RDS (in thousands) For the Three Months Ended March 31, 2021 % For the Three Months Ended March 31, 2020 % East $ 18,700 23 % $ 19,100 24 % Central 5,500 7 % 4,900 6 % West 56,211 70 % 55,350 70 % $ 80,411 100 % $ 79,350 100 %
Architectural Surfaces Group
Disaggregation Of Revenue [Line Items]
Summary of Net Revenue Disaggregated by Geographical Area and Product Category	The following table presents net revenue for the ASG operating segment disaggregated by product category for the three months ended March 31, 2021 and 2020, respectively: ASG (in thousands) For the Three Months Ended March 31, 2021 % For the Three Months Ended March 31, 2020 % Quartz $ 36,408 63 % $ 32,636 59 % Stone 15,892 28 % 17,037 30 % Tile 3,174 5 % 3,762 7 % Other 2,332 4 % 2,108 4 % $ 57,806 100 % $ 55,543 100 %

Inventories (Tables)

Inventories (Tables)	3 Months Ended
Inventories (Tables)	Mar. 31, 2021
Inventory Disclosure [Abstract]
Summary of Significant Components of Inventory	The significant components of inventory consisted of the following at: (in thousands) March 31, 2021 December 31, 2020 Raw materials $ 102,738 $ 97,988 Installations in process 2,501 994 $ 105,239 $ 98,982

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	3 Months Ended
Property and Equipment, Net (Tables)	Mar. 31, 2021
Property Plant And Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment consisted of the following at: (in thousands) March 31, 2021 December 31, 2020 Vehicles $ 11,461 $ 10,948 Machinery and equipment 9,655 9,588 Leasehold improvements 8,940 9,040 Furniture and fixtures 8,156 8,031 Computer equipment and internal-use software 12,154 11,879 Other 2,000 1,957 52,366 51,443 Less: accumulated depreciation and amortization (32,480 ) (30,387 ) Property and equipment, net $ 19,886 $ 21,056

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
Goodwill and Intangible Assets (Tables)	Mar. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Carrying Amount of Goodwill	The carrying amount of goodwill by reportable segment was as follows as of March 31, 2021 and December 31, 2020: (in thousands) ASG RDS Total Goodwill $ 45,564 $ 54,225 $ 99,789
Schedule of Gross Carrying Amount, Accumulated Amortization and Net Book Value of Intangible Assets	The following table provides the gross carrying amount, accumulated amortization and net book value by reportable segment for each class of intangible assets as of March 31, 2021: (in thousands) ASG RDS Total Gross Carrying Amount Gross Carrying Amount Customer relationships $ 60,180 $ 60,060 $ 120,240 Trade names 7,740 18,090 25,830 Non-compete agreements 50 350 400 $ 67,970 $ 78,500 $ 146,470 (in thousands) ASG RDS Total Accumulated Amortization Accumulated Amortization Customer relationships $ (27,082 ) $ (32,780 ) $ (59,862 ) Trade names (3,343 ) (8,155 ) (11,498 ) Non-compete agreements (35 ) (243 ) (278 ) $ (30,460 ) $ (41,178 ) $ (71,638 ) (in thousands) ASG RDS Total Net Book Value Net Book Value Customer relationships $ 33,098 $ 27,280 $ 60,378 Trade names 4,397 9,935 14,332 Non-compete agreements 15 107 122 $ 37,510 $ 37,322 $ 74,832 The following table provides the gross carrying amount, accumulated amortization and net book value by reportable segment for each class of intangible assets as of December 31, 2020: (in thousands) ASG RDS Total Gross Carrying Amount Gross Carrying Amount Customer relationships $ 60,180 $ 60,060 $ 120,240 Trade names 7,740 18,090 25,830 Non-compete agreements 50 350 400 $ 67,970 $ 78,500 $ 146,470 (in thousands) ASG RDS Total Accumulated Amortization Accumulated Amortization Customer relationships $ (25,548 ) $ (31,992 ) $ (57,540 ) Trade names (3,139 ) (7,522 ) (10,661 ) Non-compete agreements (33 ) (222 ) (255 ) $ (28,720 ) $ (39,736 ) $ (68,456 ) (in thousands) ASG RDS Total Net Book Value Net Book Value Customer relationships $ 34,632 $ 28,068 $ 62,700 Trade names 4,601 10,568 15,169 Non-compete agreements 17 128 145 $ 39,250 $ 38,764 $ 78,014
Schedule of Estimated Annual Amortization Expense	The estimated annual amortization expense for the next five years and thereafter is as follows: (in thousands) 2021 Remaining $ 9,421 2022 12,401 2023 12,038 2024 10,313 2025 9,580 Thereafter 21,079 $ 74,832

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
Long-Term Debt (Tables)	Mar. 31, 2021
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consisted of the following: (in thousands) March 31, 2021 December 31, 2020 RDS equipment and vehicle notes $ 126 $ 141 ASG term loans 152,511 152,773 152,637 152,914 Unamortized debt issuance costs (2,696 ) (2,765 ) Total long-term debt 149,941 150,149 Current portion of long-term debt, net of financing fees $ 15,571 $ 15,623 Long-term debt, net of current portion and financing fees $ 134,370 $ 134,526

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
Commitments and Contingencies (Tables)	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Minimum Purchases for Maintain Exclusive Rights	Using an estimated price per container based on the average price per container in 2020, the future minimum purchases to maintain the exclusive rights as of March 31, 2021 are as follows: (in thousands) Amount Remaining in 2021 $ 68,779 2022 102,186 2023 121,837 2024 145,419 2025 174,502 Thereafter — $ 612,723

Stock Compensation (Tables)

Stock Compensation (Tables)	3 Months Ended
Stock Compensation (Tables)	Mar. 31, 2021
Restricted Stock
Summary of Restricted Stock Activity and Phantom Stock Activity	A summary of the Company’s restricted stock activity for the Plans for the three months ended March 31, 2021 is as follows: Nonvested Shares Outstanding Weighted Average Grant Date Fair Value Nonvested shares at January 1, 2021 1,447,419 $ 5.33 Granted 620,000 $ 8.80 Forfeited 198,532 $ 11.08 Vested 95,840 $ 11.12 Nonvested shares at March 31, 2021 1,773,047 $ 6.50

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
Segment Information (Tables)	Mar. 31, 2021
Segment Reporting [Abstract]
Performance of Segment based upon Revenues, Operating Income and Assets	In addition, certain costs incurred at a corporate level or at the reporting unit level that benefit the segments are not allocated. These costs include: corporate payroll costs, legal, professional service fees, interest expense, including amortization of deferred financing costs, taxes and equity-based compensation. Information for the periods presented is provided below: Three Months Ended March 31, (in thousands) 2021 2020 Revenue, net: RDS $ 80,411 $ 79,350 ASG 57,806 55,543 Elimination of intercompany sales (430 ) (515 ) Consolidated total $ 137,787 $ 134,378 Operating income (loss): RDS $ 73 $ (1,607 ) ASG 5,251 2,540 Elimination of intercompany activity 15 10 Unallocated corporate operating loss (5,839 ) (2,916 ) Consolidated total $ (500 ) $ (1,973 ) Capital expenditures: RDS $ 225 $ 606 ASG 177 766 Unallocated corporate capital expenditures — — Consolidated total $ 402 $ 1,372 As of March 31, As of December 31, (in thousands) 2021 2020 Goodwill: RDS $ 54,225 $ 54,225 ASG 45,564 45,564 Consolidated total $ 99,789 $ 99,789 Other intangible assets, net: RDS $ 37,322 $ 38,764 ASG 37,510 39,250 Consolidated total $ 74,832 $ 78,014 Total assets: RDS $ 189,406 $ 193,488 ASG 200,785 198,341 Consolidation entries 155 40 Unallocated assets, including corporate 13,538 13,139 Consolidated total $ 403,884 $ 405,008

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Schedule of Computation of Basic and Diluted Earnings/(Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounting Policies [Abstract]
Net loss	$ (1,805)	$ (4,002)
Weighted average shares of common stock outstanding:
Basic common stock	25,494,410	25,192,201
Diluted common stock	25,494,410	25,192,201
Loss per share of common stock:
Basic common stock	$ (0.07)	$ (0.16)
Diluted common stock	$ (0.07)	$ (0.16)

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2021USD ($)Segmentshares	Mar. 31, 2020shares	Dec. 31, 2020USD ($)
Summary Of Significant Accounting Policies [Line Items]
Impairment losses on long-lived assets	$ 0		$ 0
Impairment charges on goodwill	$ 0
Revenue, performance obligation, description of payment terms	Customer payments may be due in advance of contract work performed, at the time the performance obligation is completed, or with payment terms following performance completion of generally 30-60 days.
Number of operating segments \| Segment	2
Level 3
Summary Of Significant Accounting Policies [Line Items]
Fair value transfers between levels	$ 0
Restricted Stock
Summary Of Significant Accounting Policies [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount \| shares	2,998,047	1,478,251

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives Definite Lived Intangible Assets (Details)	3 Months Ended
	Mar. 31, 2021
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Weighted average useful life	10 years
Customer Relationships \| Minimum
Finite Lived Intangible Assets [Line Items]
Range of estimated useful lives	2 years
Customer Relationships \| Maximum
Finite Lived Intangible Assets [Line Items]
Range of estimated useful lives	15 years
Trade Names
Finite Lived Intangible Assets [Line Items]
Weighted average useful life	8 years
Trade Names \| Minimum
Finite Lived Intangible Assets [Line Items]
Range of estimated useful lives	3 years
Trade Names \| Maximum
Finite Lived Intangible Assets [Line Items]
Range of estimated useful lives	11 years
Non-compete Agreements
Finite Lived Intangible Assets [Line Items]
Range of estimated useful lives	Life of agreement
Weighted average useful life	4 years

Revenue - Additional Informatio

Revenue - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Contract assets	$ 15,700		$ 12,800
Customer deposits	9,843		8,144
Revenue remaining performance obligation	$ 2,400		$ 3,200
Multi-family or Commercial Arrangements \| Revenue Benchmark \| Product Concentration Risk
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	4.80%	2.80%

Revenue - Additional Informat_2

Revenue - Additional Information 1 (Details)	Mar. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-04-01
Disaggregation Of Revenue [Line Items]
Revenue remaining performance obligation, expected timing of satisfaction, period	12 months

Revenue - Summary of Net Revenu

Revenue - Summary of Net Revenue Disaggregated by Geographical Area and Product Category (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenue, net	$ 137,787	$ 134,378
Residential Design Services
Disaggregation Of Revenue [Line Items]
Revenue, net	$ 80,411	$ 79,350
Residential Design Services \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	100.00%	100.00%
Residential Design Services \| East
Disaggregation Of Revenue [Line Items]
Revenue, net	$ 18,700	$ 19,100
Residential Design Services \| East \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	23.00%	24.00%
Residential Design Services \| Central
Disaggregation Of Revenue [Line Items]
Revenue, net	$ 5,500	$ 4,900
Residential Design Services \| Central \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	7.00%	6.00%
Residential Design Services \| West
Disaggregation Of Revenue [Line Items]
Revenue, net	$ 56,211	$ 55,350
Residential Design Services \| West \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	70.00%	70.00%
Architectural Surfaces Group
Disaggregation Of Revenue [Line Items]
Revenue, net	$ 57,806	$ 55,543
Architectural Surfaces Group \| Quartz
Disaggregation Of Revenue [Line Items]
Revenue, net	36,408	32,636
Architectural Surfaces Group \| Stone
Disaggregation Of Revenue [Line Items]
Revenue, net	15,892	17,037
Architectural Surfaces Group \| Tile
Disaggregation Of Revenue [Line Items]
Revenue, net	3,174	3,762
Architectural Surfaces Group \| Other
Disaggregation Of Revenue [Line Items]
Revenue, net	$ 2,332	$ 2,108
Architectural Surfaces Group \| Revenue Benchmark \| Product Concentration Risk
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	100.00%	100.00%
Architectural Surfaces Group \| Revenue Benchmark \| Product Concentration Risk \| Quartz
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	63.00%	59.00%
Architectural Surfaces Group \| Revenue Benchmark \| Product Concentration Risk \| Stone
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	28.00%	30.00%
Architectural Surfaces Group \| Revenue Benchmark \| Product Concentration Risk \| Tile
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	5.00%	7.00%
Architectural Surfaces Group \| Revenue Benchmark \| Product Concentration Risk \| Other
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	4.00%	4.00%

Concentrations, Risks and Unc_2

Concentrations, Risks and Uncertainties - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021USD ($)Customer	Mar. 31, 2020Customer	Dec. 31, 2020Customer
Concentration Risk [Line Items]
Accounts are insured by the Federal Deposit Insurance Corporation \| $	$ 250
Revenues \| Customer Concentration Risk
Concentration Risk [Line Items]
Number of customers	0	0
Concentration of risk, percentage	10.00%	10.00%
Accounts Receivable \| Customer Concentration Risk
Concentration Risk [Line Items]
Number of customers	0		0
Concentration of risk, percentage	10.00%		10.00%

Inventories - Summary of Signif

Inventories - Summary of Significant Components of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 102,738	$ 97,988
Installations in process	2,501	994
Inventories	$ 105,239	$ 98,982

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 52,366	$ 51,443
Less: accumulated depreciation and amortization	(32,480)	(30,387)
Property and equipment, net	19,886	21,056
Vehicles
Property Plant And Equipment [Line Items]
Property and equipment, gross	11,461	10,948
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	9,655	9,588
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	8,940	9,040
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	8,156	8,031
Computer Equipment and Internal-Use Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	12,154	11,879
Other
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,000	$ 1,957

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Property Plant And Equipment [Line Items]
Depreciation and amortization expense	$ 2.4	$ 2.5
Cost of Goods Sold
Property Plant And Equipment [Line Items]
Depreciation expense	0.9	1
General and Administrative Expense
Property Plant And Equipment [Line Items]
Depreciation expense	$ 1.5	$ 1.5

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Summary of Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill	$ 99,789	$ 99,789
ASG
Goodwill [Line Items]
Goodwill	45,564	45,564
RDS
Goodwill [Line Items]
Goodwill	$ 54,225	$ 54,225

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Gross Carrying Amount, Accumulated Amortization and Net Book Value of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 146,470	$ 146,470
Accumulated Amortization	(71,638)	(68,456)
Net Book Value	74,832	78,014
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	120,240	120,240
Accumulated Amortization	(59,862)	(57,540)
Net Book Value	60,378	62,700
Trade Names
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,830	25,830
Accumulated Amortization	(11,498)	(10,661)
Net Book Value	14,332	15,169
Non-compete Agreements
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	400	400
Accumulated Amortization	(278)	(255)
Net Book Value	122	145
ASG
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	67,970	67,970
Accumulated Amortization	(30,460)	(28,720)
Net Book Value	37,510	39,250
ASG \| Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	60,180	60,180
Accumulated Amortization	(27,082)	(25,548)
Net Book Value	33,098	34,632
ASG \| Trade Names
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,740	7,740
Accumulated Amortization	(3,343)	(3,139)
Net Book Value	4,397	4,601
ASG \| Non-compete Agreements
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	50	50
Accumulated Amortization	(35)	(33)
Net Book Value	15	17
RDS
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	78,500	78,500
Accumulated Amortization	(41,178)	(39,736)
Net Book Value	37,322	38,764
RDS \| Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	60,060	60,060
Accumulated Amortization	(32,780)	(31,992)
Net Book Value	27,280	28,068
RDS \| Trade Names
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	18,090	18,090
Accumulated Amortization	(8,155)	(7,522)
Net Book Value	9,935	10,568
RDS \| Non-compete Agreements
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	350	350
Accumulated Amortization	(243)	(222)
Net Book Value	$ 107	$ 128

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense on intangible assets	$ 3.2	$ 3.2

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Estimated Annual Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
2021 Remaining	$ 9,421
2022	12,401
2023	12,038
2024	10,313
2025	9,580
Thereafter	21,079
Amortization expense	$ 74,832	$ 78,014

Lines of Credit - Additional In

Lines of Credit - Additional Information (Details) - SIC Line Of Credit - USD ($)	Jun. 28, 2018	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Aug. 19, 2019
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 90,000,000				$ 100,000,000
Letter of credit facility maximum aggregate stated amount	$ 15,000,000
Description of debt instrument variable rate basis		LIBOR based rate plus an applicable margin varying from one hundred twenty five basis points (1.25%) to one hundred seventy five basis points (1.75%) based on the borrowers’ average daily availability determined quarterly, or a base rate (determined as the greatest of the Prime rate, the Federal Funds rate plus a fifty basis point (0.50%) margin, or the LIBOR rate with a 30 day interest period plus a two hundred basis point (2.00%) margin) plus an applicable margin varying from twenty five basis points (0.25%) to seventy five basis points (0.75%) based on the borrowers’ average daily availability determined quarterly.
Increase in floating interest rate, basis points	2.00%
Weighted average interest rate	1.60%
Line of credit maturity date	Jun. 28, 2023
Line of credit, outstanding amount		$ 7,400,000		$ 9,900,000
Amount of outstanding letters of credit		600,000
Debt issuance costs		500,000
Unamortized debt issuance costs related to the RDS and ASG credit agreement		200,000		$ 200,000
Maximum
Line Of Credit Facility [Line Items]
Non-cash interest expense		$ 100,000	$ 100,000
LIBOR
Line Of Credit Facility [Line Items]
Debt instrument margin basis point	2.00%
LIBOR \| Minimum
Line Of Credit Facility [Line Items]
Debt instrument margin basis point	1.25%
LIBOR \| Maximum
Line Of Credit Facility [Line Items]
Debt instrument margin basis point	1.75%
Federal Funds Rate
Line Of Credit Facility [Line Items]
Debt instrument margin basis point	0.50%
LIBOR with 30 Day Interest Period \| Minimum
Line Of Credit Facility [Line Items]
Debt instrument margin basis point	0.25%
LIBOR with 30 Day Interest Period \| Maximum
Line Of Credit Facility [Line Items]
Debt instrument margin basis point	0.75%

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 152,637	$ 152,914
Unamortized debt issuance costs	(2,696)	(2,765)
Total long-term debt	149,941	150,149
Current portion of long-term debt, net of financing fees	15,571	15,623
Long-term debt, net of current portion and financing fees	134,370	134,526
RDS equipment and vehicle notes
Debt Instrument [Line Items]
Long-term Debt, Gross	126	141
ASG term loans
Debt Instrument [Line Items]
Long-term Debt, Gross	152,511	152,773
Unamortized debt issuance costs	$ (2,700)	$ (2,800)

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended
Long-Term Debt - Additional Information (Details) - USD ($)	Dec. 31, 2015	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Apr. 08, 2020	Dec. 31, 2018	Aug. 31, 2018	Feb. 28, 2017
Debt Instrument [Line Items]
Outstanding balance		$ 152,637,000	$ 152,914,000
Outstanding on loan		149,941,000	150,149,000
Unamortized debt issuance costs		$ 2,696,000	2,765,000
RDS equipment and vehicle notes
Debt Instrument [Line Items]
Debt instrument, maturity date		May 31, 2024
Outstanding balance		$ 126,000	$ 141,000
December 2015, ASG loan agreement
Debt Instrument [Line Items]
Aggregate amount	$ 1,700,000
Debt instrument, interest rate	3.75%
Debt instrument, maturity date range, start	Apr. 8, 2016
Debt instrument, maturity date range, end	Mar. 8, 2021
February 2017, ASG financing agreement
Debt Instrument [Line Items]
Debt instrument, maturity date range, start		Jul. 1, 2017
Debt instrument, maturity date range, end		Feb. 28, 2023
Line of credit facility, maximum borrowing capacity								$ 174,200,000	$ 101,400,000	$ 105,000,000
Debt instrument leverage ratio		3.75%	3.90%	3.90%	3.90%	3.90%
Interest rate assessed		7.50%
Outstanding on loan		$ 152,500,000	$ 152,800,000
Percentage of net proceeds of asset disposition		100.00%
Percentage of insurance or condemnation awards		100.00%
Percentage of net proceeds of equity issuances		100.00%
Percentage of net proceeds of issuance of indebtedness		100.00%
Percentage of net cash proceeds received outside the ordinary course of business		100.00%
February 2017, ASG financing agreement \| Current portion of long-term debt
Debt Instrument [Line Items]
Estimated prepayment amount due		$ 15,700,000	15,700,000
February 2017, ASG financing agreement \| Prime Rate
Debt Instrument [Line Items]
Debt instrument, interest rate		3.50%
February 2017, ASG financing agreement \| Leverage Ratio Greater Than 2.40 \| Base Rate
Debt Instrument [Line Items]
Debt instrument margin basis point		4.75%
February 2017, ASG financing agreement \| Leverage Ratio Greater Than 2.40 \| LIBOR
Debt Instrument [Line Items]
Debt instrument margin basis point		6.75%
February 2017, ASG financing agreement \| Leverage Ratio Less Than 2.40 \| Base Rate
Debt Instrument [Line Items]
Debt instrument margin basis point		4.25%
February 2017, ASG financing agreement \| Leverage Ratio Less Than 2.40 \| LIBOR
Debt Instrument [Line Items]
Debt instrument margin basis point		6.25%
February 2017, ASG financing agreement \| Minimum
Debt Instrument [Line Items]
Net proceeds of asset disposition		$ 750,000
February 2017, ASG financing agreement \| Minimum \| Leverage Ratio Greater Than 2.40
Debt Instrument [Line Items]
Debt instrument leverage ratio		2.40%
February 2017, ASG financing agreement \| Maximum
Debt Instrument [Line Items]
Gain (Loss) on Condemnation		$ 2,500,000
February 2017, ASG financing agreement \| Maximum \| Leverage Ratio Less Than 2.40
Debt Instrument [Line Items]
Debt instrument leverage ratio		2.40%
ASG term loans
Debt Instrument [Line Items]
Outstanding balance		$ 152,511,000	152,773,000
Non-cash interest expense		100,000				$ 100,000
Unamortized debt issuance costs		$ 2,700,000	$ 2,800,000
ASG term loans \| Minimum
Debt Instrument [Line Items]
Debt instrument leverage ratio		3.75%
Financial covenant availability							$ 35,000,000
ASG term loans \| Maximum
Debt Instrument [Line Items]
Debt instrument leverage ratio		4.00%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2021USD ($)FacilityStateContainer	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)Container	Dec. 31, 2019USD ($)
Lessor Lease Description [Line Items]
Acquisition cost included in PP&E related to capital leases	$ 19,886,000		$ 21,056,000
Accumulated amortization related to capital leases	$ 32,480,000		30,387,000
Assets that were sold and subsequently leased back		$ 3,100,000		$ 3,100,000
Sale-leaseback accounting sale recognized		0
Long-term non-cancelable operating lease agreements expiration month and year	2022-10
Aggregate deferred rent	$ 1,800,000		$ 1,900,000
Aggregate rent expense	4,800,000	5,000,000
Aggregate general liability	2,000,000
General liability retention limit per occurrence	1,000,000
Maximum purchase volume \| Container			540
Minimum
Lessor Lease Description [Line Items]
Self insurance retention	10,000
Maximum
Lessor Lease Description [Line Items]
Self insurance retention	$ 20,000
Architectural Surfaces Group
Lessor Lease Description [Line Items]
Long-term non-cancelable operating lease agreements expiration month and year	2029-12
Number of facility leases \| Facility	1
Minimum purchase volume \| Container			480
Minimum purchase volume per quarter during 2021 \| Container	645
Minimum purchase volume per quarter during 2025 \| Container	1,332
Minimum purchase volume commitment percentage for two consecutive quarters	80.00%
Minimum purchase volume commitment percentage for calendar year	90.00%
Financial penalties if commitments are not met	$ 0
Minimum purchase volume threshold percentage not met			80.00%
Notice period given by supplier to terminate exclusivity arrangement	60 days
Architectural Surfaces Group \| Pental Granite and Marble, LLC \| United States
Lessor Lease Description [Line Items]
Number of states exclusive distribution rights \| State	23
Vehicles and Equipment
Lessor Lease Description [Line Items]
Leased vehicles, depreciation method	straight-line basis
Life of lease	4 years
Acquisition cost included in PP&E related to capital leases	$ 12,700,000		$ 12,300,000
Accumulated amortization related to capital leases	4,500,000		$ 3,700,000
Amortization expense of capital leases	$ 800,000	$ 300,000
Corporate, Administrative, Fabrication and Warehousing Facilities \| Residential Design Services \| Company Shareholder
Lessor Lease Description [Line Items]
Long-term non-cancelable operating lease agreements expiration month and year	2026-03
Number of facility leases \| Facility	3
Corporate, Administrative, Fabrication and Warehousing Facilities \| Residential Design Services \| Current Employees or Contractors
Lessor Lease Description [Line Items]
Number of facility leases \| Facility	5
Office Equipment \| Residential Design Services
Lessor Lease Description [Line Items]
Long-term non-cancelable operating lease agreements expiration month and year	2022-09

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Future Minimum Purchases for Maintain Exclusive Rights (Details) $ in Thousands	Mar. 31, 2021USD ($)
Commitments And Contingencies Disclosure [Abstract]
Remaining in 2021	$ 68,779
2022	102,186
2023	121,837
2024	145,419
2025	174,502
Future minimum purchase	$ 612,723

Stock Compensation - Additional

Stock Compensation - Additional Information (Details)	3 Months Ended		12 Months Ended
Stock Compensation - Additional Information (Details)	Mar. 31, 2021USD ($)Dayshares	Mar. 31, 2020USD ($)	Dec. 31, 2020shares	Mar. 26, 2019shares	Nov. 22, 2017shares
2017 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum aggregate number of shares issuable					2,561,463
Share based compensation, common stock outstanding	1,661,047
Common stock reserved and available for future awards	9,439
2019 Long-Term Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum aggregate number of shares issuable				1,700,000
Share based compensation, common stock outstanding	112,000
Common stock reserved and available for future awards	1,588,000
The Plans
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options granted	0
Phantom Stock Outstanding
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares outstanding	0		0
Total stock-based compensation expense \| $	$ 0
Phantom Stock Outstanding \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense \| $		$ 10,000
Restricted Stock Unit Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Incentive stock options granted pursuant terms	The performance condition was achievement of a 2021 earnings target and the level of achievement of the earnings target would determine the number of shares to be issued. In the first quarter of 2020, the performance condition for these shares that was deemed probable of vesting as of December 31, 2019, was determined to be no longer probable of vesting. This resulted in a reversal of stock compensation expense of approximately $1.6 million recorded during the three months ended March 31, 2020. In the third quarter of 2020, the majority of these performance awards were cancelled, with the remainder being cancelled during the fourth quarter of 2020.
Reversal of stock compensation expense \| $		1,600,000
Dividend yield rate	0.00%
Expected volatility rate	72.54%
Risk free rate	0.51%
Total remaining stock-based compensation expense for nonvested stock \| $	$ 13,500,000
Total remaining stock-based compensation expense for nonvested stock, excepted weighted average remaining recognition period	3 years 1 month 6 days
Total stock-based compensation expense (benefit) \| $	$ 1,200,000	$ (700,000)
Restricted Stock Unit Awards \| 2017 Plan \| Executives and Key Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock granted	620,000
Time-based Restricted Stock Units \| Chief Executive Officers
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock granted			675,000
Vesting period	4 years
Vesting period description	The time-based restricted stock units vest in equal annual installments over four years, subject to continued employment with the Company.
Performance-based Restricted Stock Units \| Chief Executive Officers
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock granted			675,000
Vesting period description	The performance-based restricted stock units contain market conditions based on the closing price of the Company’s common stock exceeding specific price hurdles for 20 consecutive trading days, and subject to continued employment with the Company.
Number of consecutive trading days on which performance based units vest \| Day	20
Inducement Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation, common stock outstanding	1,225,000		1,350,000

Stock Compensation - Summary of

Stock Compensation - Summary of Restricted Stock Activity for the Plans (Details) - The Plans - Restricted Stock	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Nonvested Shares Outstanding
Nonvested shares, Beginning Balance \| shares	1,447,419
Granted \| shares	620,000
Forfeited \| shares	198,532
Vested \| shares	95,840
Nonvested shares, Ending Balance \| shares	1,773,047
Weighted Average Grant Date Fair Value
Nonvested shares, Beginning Balance \| $ / shares	$ 5.33
Granted \| $ / shares	8.80
Forfeited \| $ / shares	11.08
Vested \| $ / shares	11.12
Nonvested shares, Ending Balance \| $ / shares	$ 6.50

Provision for Income Taxes - Ad

Provision for Income Taxes - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Effective tax rate	70.09%	44.76%

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021USD ($)FacilityExecutive	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)
Related Party Transaction [Line Items]
Aggregate rent expense	$ 4,800,000	$ 5,000,000
RDS \| Subcontractors and Supplier
Related Party Transaction [Line Items]
Number of family members have ownership interest \| Executive	2
Related party transaction, amounts of transaction	$ 200,000	200,000
RDS \| Subcontractors and Supplier \| Maximum
Related Party Transaction [Line Items]
Related party accounts payable	$ 100,000		$ 100,000
Trust Affiliated with Stockholder \| RDS \| Facility Rent
Related Party Transaction [Line Items]
Number of facilities leases \| Facility	3
Aggregate rent expense	$ 500,000	500,000
Related party unpaid amount	$ 0		0
Current Employees, Contractors or Former Owners \| RDS \| Facility Rent
Related Party Transaction [Line Items]
Number of facilities leases \| Facility	5
521 Digiulian Boulevard, LLC \| ASG \| Facility Rent
Related Party Transaction [Line Items]
Aggregate rent expense	$ 40,000	$ 30,000
Related party unpaid amount	$ 0		$ 0

Segment Information - Additiona

Segment Information - Additional Information (Details)	3 Months Ended
Segment Information - Additional Information (Details)	Mar. 31, 2021Segment
Segment Reporting [Abstract]
Number of operating segments	2

Segment Information - Performan

Segment Information - Performance of Segment based upon Revenues and Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue, net:
Net revenue	$ 137,787	$ 134,378
Operating income (loss):
Operating income (loss)	(500)	(1,973)
Capital expenditures:
Capital expenditures	402	1,372
RDS
Revenue, net:
Net revenue	80,411	79,350
ASG
Revenue, net:
Net revenue	57,806	55,543
Operating Segments \| RDS
Revenue, net:
Net revenue	80,411	79,350
Operating income (loss):
Operating income (loss)	73	(1,607)
Capital expenditures:
Capital expenditures	225	606
Operating Segments \| ASG
Revenue, net:
Net revenue	57,806	55,543
Operating income (loss):
Operating income (loss)	5,251	2,540
Capital expenditures:
Capital expenditures	177	766
Elimination
Revenue, net:
Net revenue	(430)	(515)
Operating income (loss):
Operating income (loss)	15	10
Unallocated
Operating income (loss):
Operating income (loss)	$ (5,839)	$ (2,916)

Segment Information - Summary o

Segment Information - Summary of Segment Assets to Consolidated (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Goodwill:
Goodwill	$ 99,789	$ 99,789
Other intangible assets, net:
Net Book Value	74,832	78,014
Total assets:
Assets	403,884	405,008
Operating Segments \| RDS
Goodwill:
Goodwill	54,225	54,225
Other intangible assets, net:
Net Book Value	37,322	38,764
Total assets:
Assets	189,406	193,488
Operating Segments \| ASG
Goodwill:
Goodwill	45,564	45,564
Other intangible assets, net:
Net Book Value	37,510	39,250
Total assets:
Assets	200,785	198,341
Consolidation Entries
Total assets:
Assets	155	40
Unallocated
Total assets:
Assets	$ 13,538	$ 13,139