Bowman Consulting (BWMN) 10-Q 12 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 12, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Trading Symbol	BWMN
Entity Registrant Name	BOWMAN CONSULTING GROUP LTD.
Entity Central Index Key	0001847590
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Common Stock, Shares Outstanding		11,311,488
Entity Current Reporting Status	No
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $0.01 par value
Security Exchange Name	NASDAQ
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity File Number	001-40371
Entity Tax Identification Number	54-1762351
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	12355 Sunrise Valley Drive
Entity Address, Address Line Two	Suite 520
Entity Address, City or Town	Reston
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	20191
City Area Code	703
Local Phone Number	464-1000

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current Assets
Cash and equivalents	$ 38,745	$ 386
Accounts Receivable, net	34,964	24,183
Contract assets	8,668	7,080
Notes receivable - officers, employees, affiliates, current portion	1,120	1,182
Prepaid and other current assets	3,858	2,271
Total current assets	87,355	35,102
Non-Current Assets
Property and equipment, net	17,864	15,357
Goodwill	13,484	9,179
Notes receivable	903	903
Notes receivable - officers, employees, affiliates, less current portion	1,273	1,297
Other intangible assets, net	2,789	1,131
Other assets	687	669
Total Assets	124,355	63,638
Current Liabilities
Bank line of credit		3,481
Accounts payable and accrued liabilities, current portion	18,634	12,203
Contract liabilities	2,558	1,943
Notes payable, current portion	2,222	1,592
Deferred rent, current portion	674	619
Capital lease obligation, current portion	4,625	3,495
Total current liabilities	28,713	23,333
Non-Current Liabilities
Other non-current obligations	1,243	1,244
Notes payable, less current portion	4,377	2,829
Deferred rent, less current portion	4,217	4,278
Capital lease obligation, less current portion	8,855	7,503
Deferred tax liability, net	5,133	6,472
Common shares subject to repurchase	7	842
Total liabilities	52,545	46,501
Shareholders' Equity
Preferred Stock, $0.01 par value; 5,000,000 shares authorized, no shares issued and outstanding
Common stock, $0.01 par value; 30,000,000 shares authorized; 13,367,535 shares issued and 11,179,120 outstanding, and 7,840,244 shares issued and 5,744,594 outstanding, respectively	134	2
Additional paid-in-capital	113,531	58,866
Treasury Stock, at cost; 2,188,415 and 2,095,650, respectively	(17,215)	(16,022)
Stock subscription notes receivable	(439)	(609)
Accumulated deficit	(24,201)	(25,100)
Total shareholders' equity	71,810	17,137
TOTAL LIABILITIES AND EQUITY	$ 124,355	$ 63,638

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred stock par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	13,367,535	7,840,244
Common stock, shares outstanding	11,179,120	5,744,594
Treasury stock, shares	2,188,415	2,095,650

Condensed Consolidated Income S

Condensed Consolidated Income Statements - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Gross Contract Revenue	$ 39,715	$ 31,766	$ 108,041	$ 92,126
Contract costs: (exclusive of depreciation and amortization below)
Direct payroll costs	15,531	13,035	42,873	36,768
Sub-consultants and expenses	3,967	6,354	10,967	14,814
Total contract costs	19,498	19,389	53,840	51,582
Operating Expenses:
Selling, general and administrative	18,373	14,425	48,328	38,555
Depreciation and amortization	1,598	311	4,506	952
(Gain) loss on sale	(46)	(30)	(99)	(45)
Total operating expenses	19,925	14,706	52,735	39,462
Income (loss) from operations	292	(2,329)	1,466	1,082
Other (income) expense	314	(102)	706	(179)
Income (loss) before tax expense	(22)	(2,227)	760	1,261
Income tax (benefit) expense	(379)	(979)	(139)	467
Net income (loss)	357	(1,248)	899	794
Earnings allocated to non-vested shares	71		165	41
Net income (loss) attributable to common shareholders	$ 286	$ (1,248)	$ 734	$ 753
Earnings (loss) per share
Basic	$ 0.03	$ (0.22)	$ 0.10	$ 0.14
Diluted	$ 0.03	$ (0.22)	$ 0.10	$ 0.13
Weighted average shares outstanding:
Basic	8,920,505	5,567,523	7,003,462	5,569,177
Diluted	8,935,274	5,567,523	7,008,440	5,604,804

Condensed Consolidated Statemen

Condensed Consolidated Statements of Changes in Shareholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Initial Public Offering	Common Stock	Common StockInitial Public Offering	Additional Paid-in Capital	Additional Paid-in CapitalInitial Public Offering	Treasury Stock	Stock Subscription Notes Receivable	Accumulated Deficit
Beginning balance at Dec. 31, 2019	$ (23,283)						$ (5,925)		$ (17,358)
Beginning balance, shares at Dec. 31, 2019			7,052,064				(1,248,352)
Issuance of new common shares, shares			69,827
Purchase of treasury stock	(9,587)						$ (9,587)
Purchase of treasury stock, shares			(2,950)				(807,297)
Issuance of common shares under stock compensation plan, shares			217,946
Common shares subject to repurchase liability	656								656
Fair value adjustment to redeemable common stock	(6,795)								(6,795)
Net Income	794								794
Ending balance at Sep. 30, 2020	(38,215)						$ (15,512)		(22,703)
Ending balance, shares at Sep. 30, 2020			7,336,887				(2,055,649)
Beginning balance at Jun. 30, 2020	(17,918)						$ (6,699)		(11,219)
Beginning balance, shares at Jun. 30, 2020			7,274,701				(1,361,160)
Issuance of new common shares, shares			49,560
Purchase of treasury stock	(8,813)						$ (8,813)
Purchase of treasury stock, shares							(694,489)
Issuance of common shares under stock compensation plan, shares			12,626
Common shares subject to repurchase liability	(1)								(1)
Fair value adjustment to redeemable common stock	(10,235)								(10,235)
Net Income	(1,248)								(1,248)
Ending balance at Sep. 30, 2020	(38,215)						$ (15,512)		(22,703)
Ending balance, shares at Sep. 30, 2020			7,336,887				(2,055,649)
Beginning balance at Dec. 31, 2020	17,137		$ 2		$ 58,866		$ (16,022)	$ (609)	(25,100)
Beginning balance, shares at Dec. 31, 2020			7,840,244				(2,095,650)
Issuance of new common shares	1,275	$ 47,104	$ 1	$ 38	1,274	$ 47,066
Issuance of new common shares, shares			96,136	3,805,925
Purchase of treasury stock	(1,193)		$ 21		(21)		$ (1,193)
Purchase of treasury stock, shares							(92,765)
Issuance of common shares under stock compensation plan			$ 21		(21)
Issuance of common shares under stock compensation plan, shares			1,603,315
Issuance of new common shares under employee stock purchase plan	255		$ 0		255
Issuance of new common shares under employee stock purchase plan, shares			21,915
Stock based compensation	5,361				5,361
Collections on stock subscription notes receivable	170							170
Conversion of common shares subject to repurchase liability to permanent equity	878		$ 51		827
Capital reduction related to acquisition	(76)				(76)
Net Income	899								899
Ending balance at Sep. 30, 2021	71,810		$ 134		113,531		$ (17,215)	(439)	(24,201)
Ending balance, shares at Sep. 30, 2021			13,367,535				(2,188,415)
Beginning balance at Jun. 30, 2021	68,134		$ 133		110,218		$ (17,117)	(542)	(24,558)
Beginning balance, shares at Jun. 30, 2021			13,273,673				(2,181,428)
Issuance of new common shares	428				428
Issuance of new common shares, shares			32,143
Purchase of treasury stock	(98)						$ (98)
Purchase of treasury stock, shares							(6,987)
Issuance of common shares under stock compensation plan, shares			39,804
Issuance of new common shares under employee stock purchase plan	255		$ 1		254
Issuance of new common shares under employee stock purchase plan, shares			21,915
Stock based compensation	2,634				2,634
Collections on stock subscription notes receivable	103							103
Capital reduction related to acquisition	(3)				(3)
Net Income	357								357
Ending balance at Sep. 30, 2021	$ 71,810		$ 134		$ 113,531		$ (17,215)	$ (439)	$ (24,201)
Ending balance, shares at Sep. 30, 2021			13,367,535				(2,188,415)

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities:
Net Income	$ 899	$ 794
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization - property, plant and equipment	4,283	762
Amortization of intangible assets	223	190
Gain on sale of assets	(99)	(45)
Bad debt	266	2,507
Stock based compensation	5,341	4,055
Deferred taxes	(1,340)	297
Deferred rent	(6)	562
Changes in operating assets and liabilities
Accounts Receivable	(10,015)	369
Contract Assets	(961)	4,179
Prepaid expenses	(430)	702
Other Assets	(1,032)	(285)
Accounts payable and accrued expenses	6,132	819
Contract Liabilities	(31)	(5,977)
Net cash provided by operating activities	3,230	8,929
Cash Flows from Investing Activities:
Purchases of property and equipment	(609)	(930)
Proceeds from sale of assets	100	45
Amounts advanced under loans to shareholders	(473)	(878)
Payments received under loans to shareholders	88	195
Amounts advanced under notes receivable		(414)
Payments received under notes receivable		4
Acquisitions of businesses, net of cash acquired	(3,000)
Collections under stock subscription notes receivable	170	144
Net cash used in investing activities	(3,724)	(1,834)
Cash Flows from Financing Activities:
Proceeds from initial public offering, net of underwriting discounts and commissions and other offering costs	47,104
Net payments under revolving line of credit	(3,481)	(5,717)
Repayments under fixed line of credit	(540)	(306)
Borrowings under fixed line of credit		1,985
Repayment under notes payable	(735)	(1,496)
Payments on capital leases	(3,208)	(189)
Payment of contingent consideration from acquisitions	(2)	(104)
Payments for purchase of treasury stock	(582)	(1,261)
Proceeds from issuance of common stock	297	45
Net cash provided by (used in) financing activities	38,853	(7,043)
Net increase in cash and cash equivalents	38,359	52
Cash and cash equivalents, beginning of period	386	509
Cash and cash equivalents, end of period	38,745	561
Supplemental disclosures of cash flow information:
Cash paid for interest	647	402
Cash paid for income taxes	1,040	228
Non-cash investing and financing activities
Property and equipment acquired under capital lease	(5,704)	(10,962)
Stock redemption for exercise of stock option	139
Issuance of common stock for a note receivable		(533)
Stock redemption for payment of shareholder loans		1,457
Stock redemption for payment on note receivable		6,130
Issuance of notes payable for purchase of intangible asset	$ (3,450)
Issuance of notes payable for redemption of stock		$ (604)

Nature of Business and Basis of

Nature of Business and Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Nature Of Business And Basis Of Presentation [Abstract]
Nature of Business and Basis of Presentation	1. Nature of Business and Basis of Presentation Nature of Business Bowman Consulting Group Ltd. and its affiliates (“Bowman” or “we” or the “Company”) incorporated in the Commonwealth of Virginia on June 5, 1995, and reincorporated in the State of Delaware on November 13, 2020. Bowman is a professional services firm delivering innovative solutions to the marketplace of customers who own, develop and maintain the built environment. Within that arena, we provide planning, design, engineering, geomatics, survey, construction management, environmental consulting and land procurement services to markets that encompass the buildings in which people live, work and learn in. As well as the systems that provide water, electricity and other vital services, and the roads, bridges, and transportation systems used to get from place to place. We provide services to customers through fixed-price and time-and-material based contracts containing multiple milestones and independently priced deliverables. Typically, contract awards are on a negotiated basis, ranging in value from a few thousand dollars to multiple millions of dollars and can have varying durations depending on the size, scope, and complexity of the project. The Company’s workforce typically provides the full scope of engineering and other contract services. However, with respect to certain specialty services or other compliance requirements within a particular contract we may engage third-party sub-consultants. The Company’s headquarters is located in Reston, VA and the Company has over 30 offices throughout the United States. Initial Public Offering On May 11, 2021, we closed on our initial public offering (“IPO”), in which we issued and sold 3,690,000 shares of our common stock at $14.00 per share, resulting in net proceeds of $48.0 million after deducting underwriting discounts and commissions, but before expenses of the IPO. On June 4, 2021, the underwriters exercised their option to purchase an additional 115,925 shares of the Company’s common stock at the public offering price of $14.00 per share, resulting in additional gross proceeds of approximately $1.6 million. After giving effect to this partial exercise of the overallotment option, the total number of shares sold by Bowman in its initial public offering increased to 3,805,925 shares and gross proceeds increased to approximately $53.3 million. The exercise of the over-allotment option closed on June 8, 2021, at which time the Company received net proceeds of approximately $1.5 million after underwriting discounts and commissions. Deferred offering costs consist primarily of accounting, legal, and other fees related to our IPO. Prior to the IPO, all deferred offering costs were capitalized within prepaid and other current assets in the consolidated balance sheet. After the IPO, $2.3 million of deferred offering costs were reclassified into shareholder’s equity as a reduction of the IPO proceeds. We capitalized $0.9 million of deferred offering costs within prepaid and other current assets in the consolidated balance sheet as of December 31, 2020. Basis of Presentation The accompanying unaudited condensed consolidated financial statements and footnotes have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial information. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of the results of operations, financial position, changes in shareholders’ equity and cash flows. The results of operations for the current period are not necessarily indicative of the results for the full year or the results for any future periods. The unaudited condensed consolidated financial statements should be read in conjunction with the audited combined financial statements and related footnotes included in our final prospectus dated May 6, 2021, and filed with the SEC pursuant to Rule 424(b)(4) under the Securities Act of 1933, as amended. The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies The following is a summary of the significant accounting policies and principles used in the preparation of the condensed consolidated financial statements: Emerging Growth Company Section 102(b)(1) of the Jumpstart Our Business Startups Act (“JOBS Act”) exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is either not an emerging growth company or, an emerging growth company that has opted out of using the extended transition period, difficult or impossible because of the potential differences in accounting standards used. Revenue Recognition Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contract with Customers (“ASC Topic 606”) provides a single comprehensive revenue recognition framework and supersedes almost all revenue recognition guidance including industry-specific revenue guidance. To determine the proper revenue recognition method under ASC Topic 606, the Company evaluates whether two or more contracts should be combined and accounted for as one single contract and if so, whether to account for the combined or single contract as more than one performance obligation. In general, the Company has concluded that there is a single performance obligation because the promise to transfer individual goods or services is not separately identifiable from the commitment to the deliverable of the contract and, therefore, is not distinct. The Company generally recognizes revenue over time as control transfers to a customer based upon the extent of progress towards satisfaction of the performance obligation. For services delivered under fixed price contracts, the Company uses the ratio of actual costs incurred to total estimated costs at completion (an input method) as a reasonable measure of progress towards the satisfaction of a performance in order to estimate the portion of revenue earned. A contract containing a mix of hourly and fixed fee assignments may be characterized as one lump sum contract for purposes of ASC Topic 606. As such, a contract must contain hourly billed components exclusively to qualify for the as-billed practical expedient in ASC Topic 606. For the three and nine months ended September 30, 2021, the Company derived 96.2% and 95.5% of its revenue from contracts classified as lump sum, and 3.8% and 4.5% of its revenue from exclusively time and material contracts, respectively. The Company had approximately $114.6 million in remaining performance obligations as of September 30, 2021 of which it expects to recognize approximately 99.1% within the next twelve months and the remaining 0.9% thereafter. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could vary from the estimates and assumptions that were used. Concentration of Credit Risk and other Concentrations The Company’s financial instruments that are exposed to concentrations of credit risk consist of cash and accounts receivable. Cash balances at various times during the year may exceed the amount insured by the Federal Deposit Insurance Corporation. The Company’s cash deposits are held in institutions whose credit ratings are monitored by management, and the Company has not incurred any losses related to such deposits. The Company is subject to a concentration of credit risk with respect to outstanding accounts receivable. However, the Company believes no such concentration existed during the nine months ended September 30, 2021, or the year ended December 31, 2020. The Company’s customers are located throughout the United States. Although the Company generally grants credit without collateral, management believes that its contract acceptance, billing, and collection policies are adequate to minimize material credit risk. Also, for non-governmental customers, the Company can often place mechanics liens against the real property associated with the contract in the event of non-payment. Fair Value Measurements Accounting Standards Codification Topic 820, Fair Value Measurements and Disclosures The codification establishes a three-level disclosure hierarchy to indicate the level of judgment used to estimate fair value measurements: Level 1: Quoted prices in active markets for identical assets or liabilities as of the reporting date; Level 2: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and inputs other than quoted prices (such as interest rate and yield curves); Level 3: Uses inputs that are unobservable, supported by little or no market activity and reflect significant management judgment. As of September 30, 2021 and December 31, 2020: • The carrying amount of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their fair value due to the relatively short duration of these instruments; • The carrying amounts of debt obligations approximate their fair values as the terms are comparable to terms currently offered by local financial institutions for arrangements with similar terms to industry peers with comparable credit characteristics. Accordingly, the debt obligations involve Level 2 fair value inputs; • As of December 31, 2020 the liability related to shares subject to repurchase is recognized at fair value using Level 3 inputs that were primarily determined based on the contractual settlement price as defined by the terms of the Company’s Shareholders’ Buy-Sell Agreement. As of September 30, 2021 the liability related to shares subject to repurchase is recognized at fair value using Level 1 inputs as there is an active market for the Company’s publicly traded stock. For further discussion, see Note 15, Stock Bonus Plan . Income Taxes The Company recognizes deferred income tax assets or liabilities for expected future tax consequences of events recognized in the consolidated financial statements or tax returns. Under this method, deferred income tax assets or liabilities are determined based upon the difference between the financial statement and income tax bases of assets and liabilities using enacted tax rates expected to apply when the differences settle or become realized. Valuation allowances are provided when it is more likely than not that a deferred tax asset is not realizable or recoverable in the future. The Company recognizes the effect of a change in tax rates on deferred tax assets and liabilities in income in the period that includes the enactment date. The Company’s effective tax rate for the nine months ended September 30, 2021 and 2020 was (18.6%) and 37.03%. The Company assesses uncertain tax positions to determine whether the position will more likely than not be sustained upon examination by the Internal Revenue Service (IRS) or other taxing authorities. If the Company cannot reach a more-likely-than-not determination, no benefit is recorded. If the Company determines that the tax position is more likely than not to be sustained, the Company records the largest amount of benefit that is more likely than not to be realized when the tax position is settled. The Company recognizes interest and penalties, if any, related to uncertain tax positions in income tax expense. The Company files income tax returns in the U.S. federal jurisdiction and certain states in which it operates. Based on the timing of the filing of certain tax returns, the Company’s federal income tax returns for tax years 2017 and after remain subject to examination by the U.S. Internal Revenue Service. The statute of limitations on the Company’s state income tax returns generally conforms to the federal three-year statute of limitations. Segments The Company operates in one segment based upon the financial information used by its chief operating decision maker in evaluating the financial performance of its business and allocating resources. The single segment represents the Company’s core business of providing engineering and related professional services to its customers. Recently Issued Accounting Guidance Accounting guidance not yet adopted Leases Financial Instruments – Credit Losses Goodwill

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings per Share	3. Earnings per Share Basic earnings (loss) per share is calculated by dividing net income (loss) attributable to the Company available to common stockholders by the weighted average number of common shares outstanding for the three and nine months ended September 30, 2021 and 2020. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were either exercised or converted into common stock or resulted in the issuance of common stock that would share in the earnings of the Company. The dilutive effect of options is reflected in diluted earnings per share by application of the treasury stock method. The dilutive effect of shares to be purchased under the Company’s Employee Stock Purchase Plan is reflected in diluted earnings per share by the weighted-average number of shares outstanding that would have been outstanding during the period. The Company uses the two-class method to determine earnings per share. For calculating basic earnings per share, for the three and nine months ended September 30, 2021, the weighted average number of shares outstanding exclude 2,194,343 and 1,541,174 non-vested restricted shares and 21,499 and 36,246 unexercised substantive options. The computation of diluted earnings per share for the three and nine months ended September 30, 2021 did not assume the effect of restricted shares or substantive options because the effects were antidilutive. For calculating basic earnings per share, for the three and nine months ended September 30, 2020, the weighted average number of shares outstanding exclude 310,922 and 253,141 non-vested restricted shares and 55,548 and 52,673 substantive options. The computation of diluted earnings per share for the three and nine months ended September 30, 2020 did not assume the effect of restricted shares or substantive options because the effects were antidilutive. The following table represents a reconciliation of the net income and weighted average shares outstanding for the calculation of basic and diluted earnings per share for the three and nine months ended September 30, 2021 and 2020 (in thousands, except share data): For the Three Months Ended September 30, For the Nine Months Ended September 30, 2021 2020 2021 2020 Numerator Net income (loss) $ 357 $ (1,248 ) $ 899 $ 794 Earnings allocated to non-vested shares 71 - 165 41 Subtotal $ 286 $ (1,248 ) $ 734 $ 753 Denominator Weighted average common shares outstanding 8,920,505 5,567,523 7,003,462 5,569,177 Effect of dilutive nominal options - - - 4,396 Effect of dilutive contingently earned shares 14,769 - 4,978 31,231 Dilutive average shares outstanding 8,935,274 5,567,523 7,008,440 5,604,804 Basic earnings (loss) per share $ 0.03 $ (0.22 ) $ 0.10 $ 0.14 Dilutive earnings (loss) per share $ 0.03 $ (0.22 ) $ 0.10 $ 0.13

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Acquisitions	4. Acquisitions Business Combinations McFarland-Dyer & Associates, Inc. In the third quarter of 2021, the Company signed a purchase agreement to acquire McFarland-Dyer & Associates, Inc. (“MDA”), with an effective date of August 1, 2021. MDA is a landscape architectural, land planning, civil engineering and land surveying firm based in Suwanee, GA. The Company paid total consideration of $4.0 million, which was comprised of 32,143 shares of common stock, at $12.85 per share, for a total of $0.4 million, plus $3.6 million in cash, promissory note and assumed liabilities. The promissory note has a 3.25% interest rate with equal quarterly payments beginning on January 15, 2022 and ending April 15, 2024. The purchase agreement includes a contingent consideration feature, which affords the sellers the opportunity to have the promissory note increased by a maximum of $0.7 million based on certain financial performance thresholds measured quarterly from December 31, 2021 through June 30, 2022. The Company initially recorded a $57,000 liability to contingent consideration in connection with the acquisition. The Company will quarterly evaluate its estimated liability to the contingent consideration and adjust the balance if necessary. The acquisition of MDA allows Bowman to further enhance its land architectural and civil engineering competencies thereby allowing the Company to broaden its offerings and better serve its public and private sector customers. The following summarizes the preliminary calculations of the fair values of MDA assets acquired and liabilities assumed as of the acquisition date (in thousands): Total Purchase Price $ 3,967 Purchase Price Allocation: Accounts Receivable 1,033 Contract assets 410 Property and equipment, net 39 Intangible Assets 990 Other assets 34 Accounts payable and other current liabilities (70 ) Contract liabilities (230 ) Total identifiable assets $ 2,206 Goodwill 1,761 Net assets acquired $ 3,967 The purchase price allocation is based upon preliminary information and is subject to change when additional information is obtained. Goodwill results from an assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. All of the goodwill recognized is expected to be deductible for tax purposes. The Company has not completed its final assessment of the fair values of MDA’s assets acquired and liabilities assumed. The final purchase allocation could result in adjustments to certain assets and liabilities, including the residual amount allocated to goodwill. Identified intangible assets are comprised of customer relationships and contract rights for a total amount of $1.0 million, to be amortized over an estimated useful life of 15 years and 2.4 years, respectively.

Disaggregation of Revenue and C

Disaggregation of Revenue and Contract Balances	9 Months Ended
	Sep. 30, 2021
Disaggregation Of Revenue [Abstract]
Disaggregation of Revenue and Contract Balances	5. Disaggregation of Revenue and Contract Balances The Company generally recognizes revenue over time as control transfers to a customer based upon the extent of progress towards satisfaction of the performance obligation. For services delivered under fixed price contracts, the Company uses the ratio of actual costs incurred to total estimated costs at completion (an input method) as a reasonable measure of progress towards the satisfaction of a performance in order to estimate the portion of revenue earned. A contract containing a mix of hourly and fixed fee assignments may be characterized as one lump sum contract for purposes of ASC Topic 606. As such, a contract must contain hourly billed components exclusively to qualify for the as-billed practical expedient in ASC Topic 606. For the three and nine months ended September 30, 2021, the Company derived 96.2% and 95.5% of its revenue from contracts classified as lump sum, and 3.8% and 4.5% of its revenue from exclusively time and material contracts, respectively. The Company had approximately $114.6 million in remaining performance obligations as of September 30, 2021 of which it expects to recognize approximately 99.1% within the next twelve months and the remaining 0.9% thereafter. The Company recognized $0.1 million and $1.3 million of revenue for the three and nine months ended September 30, 2021, which was included in the contract liabilities balance as of December 31, 2020 and $0.4 million and $4.5 million of revenue for the three and nine months ended September 30, 2020, which was included in the contract liabilities balance as of December 31, 2019.

Contracts in Progress

Contracts in Progress	9 Months Ended
	Sep. 30, 2021
Contract With Customer Asset And Liability [Abstract]
Contracts in Progress	6. Contracts in Progress The following table reflects the calculation of the net balance of contract assets and contract liabilities. Costs and estimated earnings on contracts in progress consist of the following (in thousands): September 30, 2021 December 31, 2020 Costs incurred on uncompleted contracts $ 148,335 $ 113,856 Estimated contract earnings in excess of costs 198,528 151,423 Estimated contract earnings to date 346,863 265,279 Less: billed to date (340,753 ) (260,142 ) Net contract assets $ 6,110 $ 5,137

Notes Receivable

Notes Receivable	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Notes Receivable	7. Notes Receivable The Company has unsecured notes receivable from related parties, certain non-executive officers of the Company and an unrelated third party. The following is a summary of these notes receivable (in thousands): September 30, 2021 December 31, 2020 Officers, employees and affiliated entities - Interest accrues annually at rates ranging from 3.25% - 5.5%. The notes receivable mature through December 2021 $ 2,393 $ 2,479 Unrelated third party - Currently no interest is being accrued on this note. The note receivable matures in December 2023 903 903 Total: 3,296 3,382 Less: current portion Officers, employees and affiliates (1,120 ) (1,182 ) Unrelated third party - - Noncurrent portion $ 2,176 $ 2,200 Each borrower may prepay all or part of the outstanding balance at any time prior to the date of maturity. During the nine months ended September 30, 2021, interest accrued on the notes receivable at the stipulated rates between 3.25% and 5.50%.

Property and Equipment, Net

Property and Equipment, Net	9 Months Ended
	Sep. 30, 2021
Property Plant And Equipment [Abstract]
Property and Equipment, Net	8. Property and Equipment, Net Property and equipment for fixed assets are as follows (in thousands): September 30, 2021 December 31, 2020 Computer equipment $ 1,260 $ 1,276 Survey equipment 4,444 4,444 Vehicles 460 463 Furniture and fixtures 1,661 1,638 Leasehold improvements 6,727 5,887 Software 283 283 Fixed assets pending lease financing 1 351 146 Total: 15,186 14,137 Less: accumulated depreciation (10,460 ) (9,912 ) Property and Equipment, net of capital leased assets $ 4,726 $ 4,225 1 Depreciation expense for fixed assets for the three and nine months ended September 30, 2021 was $0.2 million and $0.6 million, respectively. Depreciation expense for fixed assets for the three and nine months ended September 30, 2020 was $0.2 million and $0.6 million, respectively. Property and equipment for capital leased assets are as follows (in thousands): September 30, 2021 December 31, 2020 Equipment $ 13,393 $ 8,590 Vehicles 4,516 3,825 Total: 17,909 12,415 Less: accumulated amortization on leased assets (4,771 ) (1,283 ) Capital Leased Assets, net $ 13,138 $ 11,132 Amortization expense for capital leased assets for the three and nine months ended September 30, 2021 was $1.3 million and $3.7 million, respectively. Amortization expense for capital leased assets for the three and nine months ended September 30, 2020 was $0.1 million and $0.2 million, respectively.

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	9. Goodwill The following is a summary of goodwill resulting from business acquisitions held by the Company at September 30, 2021 and December 31, 2020 (in thousands): Goodwill Balance as of December 31, 2020 $ 9,179 Acquisition - KTA Group 2,544 Acquisition - McFarland-Dyer & Associates 1,761 Balance as of September 30, 2021 $ 13,484

Intangible Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2021
Intangible Assets [Abstract]
Intangible Assets	10. Intangible Assets Total intangible assets consisted of the following at September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Gross Amount Accumulated Amortization Net Balance Gross Amount Accumulated Amortization Net Balance Customer relationships $ 2,192 $ (534 ) $ 1,658 $ 809 $ (382 ) $ 427 Contract rights 488 (185 ) 303 150 (150 ) - Leasehold 160 (13 ) 147 - - - Non-complete agreement 137 (137 ) - 137 (114 ) 23 Domain name 281 - 281 281 - 281 Licensing rights 400 - 400 400 - 400 Total $ 3,658 $ (869 ) $ 2,789 $ 1,777 $ (646 ) $ 1,131 The domain name and licensing rights acquired during the year ended December 31, 2020 for a total of $0.7 million have indefinite useful lives. The following table summarizes the weighted average useful lives of intangible assets by asset class used for straight-line expense purposes: September 30, 2021 December 31, 2020 Customer relationships 12.8 5.0 Contract rights 2.4 2.0 Leasehold 9.2 - Non-compete agreement 3.0 3.0 Amortization expense for the three and nine months ended September 30, 2021 was $0.1 million and $0.2 million, respectively. Amortization expense for the three and nine months ended September 30, 2020 was $0.1 million and $0.2 million, respectively. Future amortization for the remainder of 2021 and for the succeeding years is as follows (in thousands): 2021 $ 100 2022 397 2023 336 2024 102 2025 102 Thereafter 1,071 Total $ 2,108

Bank Revolving Line of Credit a

Bank Revolving Line of Credit and Fixed Credit Facilities	9 Months Ended
	Sep. 30, 2021
Line Of Credit Facility [Abstract]
Bank Revolving Line of Credit and Fixed Credit Facilities	11. Bank Revolving Line of Credit and Fixed Credit Facilities In 2017, the Company entered into a credit agreement (“the Credit Agreement”) with Bank of America (“the Bank”) which included a revolving line of credit (“the Revolving Line”) and a non-revolving line of credit (“the Fixed Line #1”). The Revolving Line allowed for repayments and re-borrowings. The maximum advance was equal to the lesser of $12.4 million (“the Credit Limit”) or the Borrowing Base as defined in the Credit Agreement. The Borrowing Base is computed based upon a percentage of eligible receivables within each aging category under 120 days and is further refined for customer type. Receivables more than 120 days and those from related parties or affiliates are not considered to be eligible receivables for the Borrowing Base. During the year ended December 31, 2019, the Credit Limit increased to $15.0 million. During the year ended December 31, 2019, a second non-revolving line of credit was established (Fixed Line #2). During the year ended December 31, 2020, the Company entered into an additional credit agreement with Bank of America (Facility #4). Both credit agreements contained certain financial covenants including fixed charge coverage ratio, debt to EBITDA and adjusted debt to EBITDA, all of which the Company complied with on September 30, 2021 and December 31, 2020. On July 30, 2021, the Company entered into a Sixth Amendment to the Credit Agreement whereby the Company and the Bank agreed to extend the maturity date of the Revolving Line to July 31, 2023. The Sixth Amendment also eliminated the adjusted debt to EBITDA covenant along with certain administrative requirements and established the Secured Overnight Financing Rate (SOFR) as the replacement for LIBOR. Additional modifications to the Revolving Line included expanded allowances for acquisition and reduced interest rate spreads to a range of 2.00% to 2.60%, among other things. As of June 30, 2021, the Revolving Line required monthly payments of interest at the greater of the London Interbank Offered Rate (LIBOR) daily floating rate or 1.25% plus an applicable rate which varied between 2.35% and 2.95% based on the Company achieving certain leverage ratios as defined in the Credit Agreement. On September 30, 2021, and September 30, 2020, the interest rate was 3.60% and 3.25%, respectively. All outstanding principal is due upon expiration, which was extended to July 31, 2023, when the Company entered into the Sixth Amendment to the Credit Agreement. The Revolving Line is reported as bank line of credit on the consolidated balance sheets. On September 30, 2021 and December 31, 2020, the outstanding balance on the Revolving Line was $0 and $3.5 million, respectively. Fixed Line #1 has a maximum advance of $1.0 million and does not allow for re-borrowings and is included in Notes Payable (see Note 12). Beginning October 1, 2017, the Company began paying interest on a monthly basis at a rate per year equal to LIBOR plus 2.75%. On September 30, 2021 and September 30, 2020, the interest rate was 2.83% and 2.90%, respectively. Commencing the earlier of i) the date no remaining amount is available under the Fixed Line or, ii) August 31, 2018, the Company is obligated to pay the then outstanding principal balance in sixty equal monthly installments through maturity in August 2023. On September 30, 2021 and December 31, 2020, the outstanding balance on Fixed Line #1 was $0.4 million and $0.5 million, respectively. Fixed Line #2 has a maximum advance of $1.0 million and does not allow for re-borrowings and is included in Notes Payable (see Note 12). On April 1, 2020, the Company began paying interest monthly at a rate per year equal to LIBOR plus 2.00%. On September 30, 2021, the interest rate was 2.08%. Commencing the earlier of i) the date no remaining amount is available under the Fixed Line or, ii) August 31, 2020, the Company is obligated to pay the then outstanding principal balance in sixty equal monthly installments through maturity in September 2025. On September 30, 2021 and December 31, 2020, the outstanding balance on Fixed Line #2 was $0.8 million and $0.9 million, respectively. Facility #4 is a term loan with a principal loan amount of $1.0 million and is included in Notes Payable (see Note 12). The loan is to be repaid over thirty-six months beginning April 13, 2020 through maturity on March 13, 2023. The payments consist of principal and interest in equal combined installments of $29,294. The interest rate on this loan is 3.49%. On September 30, 2021 and December 31, 2020, the outstanding balance on Facility #4 was $0.5 million and $0.8 million, respectively. The Company secures its obligations under the Credit Agreement with substantially all assets of the Company. Fixed Line #1 is guaranteed by Gary Bowman, the Company’s Chairman and Chief Executive Officer (“Guarantor”). Obligations of the Company to the Guarantor and certain other shareholders of the Company are subordinated to the Company’s obligations under the Credit Agreement and Fixed Line loans. The Company must maintain, on a combined basis certain financial covenants defined in the Credit Agreement. Interest expense on the Revolving and Fixed Lines totaled $12,000 and $0.1 million during the three and nine months ended September 30, 2021. Interest expense on the Revolving and Fixed Lines totaled $35,000 and $0.2 million during the three and nine months ended September 30, 2020.

Notes Payable

Notes Payable	9 Months Ended
	Sep. 30, 2021
Debt Instruments [Abstract]
Notes Payable	12. Notes Payable Notes payable consist of the following (in thousands): September 30, 2021 December 31, 2020 Related parties: Shareholders - Interest accrues annually at rates ranging from 0.00% - 6.25%. The notes payable mature on various dates through October 2025. $ 4,767 $ 2,202 Unrelated third parties: Note payable for purchase of intangible asset 150 - Fixed line notes payable - see note 11 1,682 2,219 Total 6,599 4,421 Less: current portion (2,222 ) (1,592 ) Noncurrent portion $ 4,377 $ 2,829 The Company’s chairman and Chief Executive Officer guarantees certain of the notes payable, and certain of the notes payable are subordinate to the terms of the Credit Agreement disclosed in Note 11. Interest expense attributable to the notes payable totaled $0.1 million and $0.2 million for the three and nine months ended September 30, 2021, respectively. Interest expense attributable to the notes payable totaled $0.1 million and $0.2 million for the three and nine months ended September 30, 2020, respectively. Future principal payments on notes payable for remainder of 2021 and succeeding years are as follows (in thousands): 2021 $ 744 2022 2,276 2023 1,932 2024 1,286 2025 361 Total $ 6,599

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	13. Related Party Transactions The Company leases commercial office space from BCG Chantilly, LLC (BCC), an entity in which Mr. Bowman, Mr. Bruen and Mr. Hickey collectively own a 63.6% interest. As of September 30, 2021 and December 31, 2020 there were no amounts due to or receivables due from BCC. Rent expense for the three and nine months ended September 30, 2021 was $21,000 and $61,000, respectively. Rent expense for the three and nine months ended September 30, 2020 was $20,000 and $60,000, respectively. Bowman Lansdowne Development, LLC (BLD) is an entity in which Mr. Bowman, Mr. Bruen, Mr. Hickey have an ownership interest. On September 30, 2021 and December 31, 2020, the Company’s notes receivable included $0.5 million and $0.5 million, respectively, from BLD. Lansdowne Development Group, LLC (LDG) is an entity in which BLD has a minority ownership interest. On September 30, 2021 and December 31, 2020, our accounts receivable included $0.1 million and $0.1 million, respectively, due from LDG. On September 30, 2021 and December 31, 2020, notes receivable included $0.4 million and $0.4 million, respectively from LDG. Bowman Realty Investments 2010, LLC (BR10) is an entity in which Mr. Bowman, Mr. Bruen, Mr. Hickey have an ownership interest. On September 30, 2021 and December 31, 2020, the Company’s notes receivable included $0.2 million and $0.2 million, respectively, from BR10. Alwington Farm Developers, LLC (AFD) is an entity in which BR10 has a minority ownership interest. On September 30, 2021 and December 31, 2020, notes receivable included $1.2 million and $1.2 million, respectively, from AFD. During the nine months ended September 30, 2021 and 2020, the Company provided administrative, accounting and project management services to certain of the related party entities. The cost of these services was $0.1 million and $0, respectively. These entities were billed $0.1 million and $0, respectively. Bowman Realty Investments 2013 LLC (BR13) is an entity in which Mr. Bowman, Mr. Bruen, and Mr. Hickey have an ownership interest. Leesburg Acquisition Partners (LAP) is an entity in which Mr. Bowman, Mr. Bruen and Mr. Hickey have an ownership interest. During the three months ended September 30, 2021, the Company made $28,808 of back charge payments relating to work performed for LAP in prior years. On September 30, 2021 and December 31, 2020, the Company was due $0.4 million and $0.6 million, respectively, from shareholders under the terms of stock subscription notes receivable. On September 30, 2021 and December 31, 2020, the Company owed $0.3 million and $0.3 million, respectively, to a retired shareholder and former director in connection with a 2015 acquisition. As of September 30, 2021 and December 31, 2020, the Company owed certain of our current and former shareholders $4.8 million and $2.2 million, respectively. The notes result from repurchases of stock from shareholders upon termination of employment and promissory notes issued in connection with acquisitions.

Stock Options

Stock Options	9 Months Ended
	Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Options	14. Stock Options Effective May 11, 2021 the Company established the Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan (“the Plan”). The plan is administered by the Board of Directors through which they can grant stock options, including Incentive Stock Options (“ISO”), and non-qualified stock options (“NQSO”). The purpose of the Plan is to grant equity incentive awards to eligible participants to attract, motivate and retain key personnel. The Plan supersedes and replaces any prior plan for stock options except that the prior plan shall remain in effect with respect to options granted under such prior plan until such options have been exercised, expired or canceled. The number of shares for which each option shall be granted, whether the option is an ISO or NQSO, the option price, the exercisability of the option, and all other terms and conditions of the option are determined by the Board at the time the option is granted. The options generally vest over a period between two and five years. For the nine months ended September 30, 2021, no new option shares were granted. A summary of the status of stock options exercised, including the substantive options discussed in Note 3, is as follows: Number of shares Weighted Average Exercise Price Outstanding at January 1, 2021 53,277 $ 5.87 Granted - - Exercised (33,276 ) 5.64 Expired or cancelled - - Outstanding at September 30, 2021 20,001 $ 6.25 The following summarizes information about options outstanding and exercisable at January 1, 2021 and September 30, 2021: Options Outstanding and Exercisable Exercise Price Total Outstanding Weighted Average Remaining Life (Years) Weighted Average Exercise Price Total Exercisable January 1, 2021 $ 6.37 53,277 4.5 $ 5.87 53,277 September 30, 2021 $ 6.57 20,001 5.0 $ 6.25 20,001 The intrinsic value of these options on September 30, 2021 and December 31, 2020 was $7.18 and $6.43, respectively. The Company received cash payments of $14,855 and $42,140 from the exercise of options under the Stock Option Plan in the three and nine months ended September 30, 2021. The Company did not record any compensation costs related to stock options during the three and nine months ended September 30, 2021. As of September 30, 2021, there is no unrecognized compensation costs related to non-vested share-based compensation arrangements granted under the Stock Option Plan. The remaining unexercised shares are from substantive options in which the non-recourse notes may be pre-paid, therefore the Company recognized the total calculated compensation expense at the time of issuance.

Stock Bonus Plan

Stock Bonus Plan	9 Months Ended
	Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Bonus Plan	15. Stock Bonus Plan Effective May 11, 2021 the Company established the Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan. The Plan is administered by the Board of Directors through which they can issue restricted stock awards. The purpose of the Plan is to grant equity incentive awards to eligible participants to attract, motivate and retain key personnel. The Plan supersedes and replaces any prior plan for stock bonus grants to employees of the Company except that the prior plan shall remain in effect with respect to awards granted under such prior plan until such awards have been forfeited or fully vested. During the nine months ended September 30, 2021, the Board granted 1,603,423 shares under the Plan. The shares have a vesting period of up to five years during which there are certain restrictions as defined by the Plan and Stock Bonus Agreements. The grant date fair value of the award is the closing price of the Share on such date, or if there are no sales on such date, on the next preceding day on which there were sales. The following table summarizes the activity of restricted shares subject to forfeiture: Number of shares Weighted Average Grant Price Outstanding at January 1, 2021 702,926 $ 12.80 Granted 1,603,423 13.95 Vested (96,527 ) 12.80 Cancelled (108 ) 13.02 Outstanding at September 30, 2021 2,209,714 $ 13.63 The following table represents the change in the liability to common shares subject to repurchase and the associated non-cash compensation expense for the nine months ended September 30, 2021 and the year ended December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Beginning Balance $ 842 $ 8,267 Non-cash compensation from ratable vesting 41 2,712 Non-cash compensation from change in fair value of liability 2 2,457 Other stock activity, net 516 (786 ) Reclassification upon modification (1,394 ) (11,808 ) Ending balance $ 7 $ 842 As of September 30, 2021, the Company had 2,209,714 of unvested stock awards that vest between October 1, 2021 and May 11, 2026. The future expense of the unvested awards for the remainder of 2021 and succeeding years is as follows (in thousands): 2021 $ 2,527 2022 8,652 2023 7,378 2024 4,545 Thereafter 1,547 Total $ 24,649

Capital Leases

Capital Leases	9 Months Ended
	Sep. 30, 2021
Capital Leases Of Lessee [Abstract]
Capital Leases	16. Capital Leases On September 30, 2020, the Company converted operating leases for equipment and vehicles to capital leases and recorded the associated equipment purchases and capital lease liability, current and non-current. The payment terms on the lease agreements range between 30 and 50 months with payments totaling approximately $0.4 million per month. We use the incremental borrowing rate on our revolving line of credit to calculate the present value on new leases. Future minimum commitments under non-cancelable capital leases for the remainder of 2021 and succeeding years are as follows (in thousands): 2021 $ 1,379 2022 5,088 2023 3,847 2024 1,654 2025 653 Total minimum lease payments $ 12,621 Less: amount representing interest (1,272 ) Present value of total net minimum lease payments $ 11,349 Less: current portion of net minimum lease payments (4,625 ) Long-term portion of net minimum lease payments $ 6,724 The above table is exclusive of the $2.1 million bargain purchase price associated with the $13.5 million total liability to capital leases as presented on the consolidated balance sheet.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	17. Commitments and Contingencies Operating leases The Company leases office space, equipment and vehicles. The Company financed vehicles, certain IT, and other equipment under the terms of three primary master lease agreements accounted for as operating leases until September 30, 2020, when the Company converted the equipment and vehicles to capital lease as referenced in Note 16. The Company now leases nearly all equipment and vehicles under capital lease agreements and all office space under operating lease agreements. Rent, vehicle and equipment lease expense for the three and nine months ended September 30, 2021, was $1.5 million and $4.3 million, respectively. Rent, vehicle, and equipment lease expense for the three and nine months ended September 30, 2020, was $1.9 million and $6.0 million, respectively. Future minimum lease payments for the remainder of 2021 and for the succeeding years is as follows (in thousands): 2021 $ 1,471 2022 5,817 2023 4,613 2024 4,165 2025 3,661 Thereafter 9,378 Total $ 29,105

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	18. Subsequent Events The Company has evaluated subsequent events through November 12, 2021, the date that financial statements were issued. On October 1, 2021, the Company completed the acquisition of assets and operations of Triangle Site Design located in Raleigh, North Carolina. In connection with the acquisition, the Company issued 65,428 shares of common stock to the seller. On October 8, 2021, the Company completed the acquisition of assets and operations of PCD Engineering, Inc. located in Denver, Colorado. In connection with the acquisition, the Company issued 36,444 shares of common stock to the seller. On October 15, 2021, the Company completed the acquisition of assets and operations of BTM Engineering located in Louisville, Kentucky. The Company did not issue shares of common stock to the seller. Given the short period of time between these acquisition dates and the issuance of this quarterly report on Form 10-Q, it is not practicable to disclose the preliminary purchase price allocations for these transactions. On November 10, 2021, the Company’s Board of Directors adopted the 2021 Executive Officers Short Term Incentive Plan and the 2021 Executive Officers Long Term Incentive Plan (“21LTIP”). Under the terms of the 21LTIP, performance stock units in the amount of 260,842 were issued to Gary Bowman, Bruce Labovitz, Michael Bruen and Robert Hickey in the aggregate.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Initial Public Offering	Initial Public Offering On May 11, 2021, we closed on our initial public offering (“IPO”), in which we issued and sold 3,690,000 shares of our common stock at $14.00 per share, resulting in net proceeds of $48.0 million after deducting underwriting discounts and commissions, but before expenses of the IPO. On June 4, 2021, the underwriters exercised their option to purchase an additional 115,925 shares of the Company’s common stock at the public offering price of $14.00 per share, resulting in additional gross proceeds of approximately $1.6 million. After giving effect to this partial exercise of the overallotment option, the total number of shares sold by Bowman in its initial public offering increased to 3,805,925 shares and gross proceeds increased to approximately $53.3 million. The exercise of the over-allotment option closed on June 8, 2021, at which time the Company received net proceeds of approximately $1.5 million after underwriting discounts and commissions. Deferred offering costs consist primarily of accounting, legal, and other fees related to our IPO. Prior to the IPO, all deferred offering costs were capitalized within prepaid and other current assets in the consolidated balance sheet. After the IPO, $2.3 million of deferred offering costs were reclassified into shareholder’s equity as a reduction of the IPO proceeds. We capitalized $0.9 million of deferred offering costs within prepaid and other current assets in the consolidated balance sheet as of December 31, 2020.
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements and footnotes have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial information. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of the results of operations, financial position, changes in shareholders’ equity and cash flows. The results of operations for the current period are not necessarily indicative of the results for the full year or the results for any future periods. The unaudited condensed consolidated financial statements should be read in conjunction with the audited combined financial statements and related footnotes included in our final prospectus dated May 6, 2021, and filed with the SEC pursuant to Rule 424(b)(4) under the Securities Act of 1933, as amended. The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
Emerging Growth Company	Emerging Growth Company Section 102(b)(1) of the Jumpstart Our Business Startups Act (“JOBS Act”) exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is either not an emerging growth company or, an emerging growth company that has opted out of using the extended transition period, difficult or impossible because of the potential differences in accounting standards used.
Revenue Recognition	Revenue Recognition Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contract with Customers (“ASC Topic 606”) provides a single comprehensive revenue recognition framework and supersedes almost all revenue recognition guidance including industry-specific revenue guidance. To determine the proper revenue recognition method under ASC Topic 606, the Company evaluates whether two or more contracts should be combined and accounted for as one single contract and if so, whether to account for the combined or single contract as more than one performance obligation. In general, the Company has concluded that there is a single performance obligation because the promise to transfer individual goods or services is not separately identifiable from the commitment to the deliverable of the contract and, therefore, is not distinct. The Company generally recognizes revenue over time as control transfers to a customer based upon the extent of progress towards satisfaction of the performance obligation. For services delivered under fixed price contracts, the Company uses the ratio of actual costs incurred to total estimated costs at completion (an input method) as a reasonable measure of progress towards the satisfaction of a performance in order to estimate the portion of revenue earned. A contract containing a mix of hourly and fixed fee assignments may be characterized as one lump sum contract for purposes of ASC Topic 606. As such, a contract must contain hourly billed components exclusively to qualify for the as-billed practical expedient in ASC Topic 606. For the three and nine months ended September 30, 2021, the Company derived 96.2% and 95.5% of its revenue from contracts classified as lump sum, and 3.8% and 4.5% of its revenue from exclusively time and material contracts, respectively. The Company had approximately $114.6 million in remaining performance obligations as of September 30, 2021 of which it expects to recognize approximately 99.1% within the next twelve months and the remaining 0.9% thereafter.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could vary from the estimates and assumptions that were used.
Concentration of Credit Risk and other Concentrations	Concentration of Credit Risk and other Concentrations The Company’s financial instruments that are exposed to concentrations of credit risk consist of cash and accounts receivable. Cash balances at various times during the year may exceed the amount insured by the Federal Deposit Insurance Corporation. The Company’s cash deposits are held in institutions whose credit ratings are monitored by management, and the Company has not incurred any losses related to such deposits. The Company is subject to a concentration of credit risk with respect to outstanding accounts receivable. However, the Company believes no such concentration existed during the nine months ended September 30, 2021, or the year ended December 31, 2020. The Company’s customers are located throughout the United States. Although the Company generally grants credit without collateral, management believes that its contract acceptance, billing, and collection policies are adequate to minimize material credit risk. Also, for non-governmental customers, the Company can often place mechanics liens against the real property associated with the contract in the event of non-payment.
Fair Value Measurements	Fair Value Measurements Accounting Standards Codification Topic 820, Fair Value Measurements and Disclosures The codification establishes a three-level disclosure hierarchy to indicate the level of judgment used to estimate fair value measurements: Level 1: Quoted prices in active markets for identical assets or liabilities as of the reporting date; Level 2: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and inputs other than quoted prices (such as interest rate and yield curves); Level 3: Uses inputs that are unobservable, supported by little or no market activity and reflect significant management judgment. As of September 30, 2021 and December 31, 2020: • The carrying amount of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their fair value due to the relatively short duration of these instruments; • The carrying amounts of debt obligations approximate their fair values as the terms are comparable to terms currently offered by local financial institutions for arrangements with similar terms to industry peers with comparable credit characteristics. Accordingly, the debt obligations involve Level 2 fair value inputs; • As of December 31, 2020 the liability related to shares subject to repurchase is recognized at fair value using Level 3 inputs that were primarily determined based on the contractual settlement price as defined by the terms of the Company’s Shareholders’ Buy-Sell Agreement. As of September 30, 2021 the liability related to shares subject to repurchase is recognized at fair value using Level 1 inputs as there is an active market for the Company’s publicly traded stock. For further discussion, see Note 15, Stock Bonus Plan .
Income Taxes	Income Taxes The Company recognizes deferred income tax assets or liabilities for expected future tax consequences of events recognized in the consolidated financial statements or tax returns. Under this method, deferred income tax assets or liabilities are determined based upon the difference between the financial statement and income tax bases of assets and liabilities using enacted tax rates expected to apply when the differences settle or become realized. Valuation allowances are provided when it is more likely than not that a deferred tax asset is not realizable or recoverable in the future. The Company recognizes the effect of a change in tax rates on deferred tax assets and liabilities in income in the period that includes the enactment date. The Company’s effective tax rate for the nine months ended September 30, 2021 and 2020 was (18.6%) and 37.03%. The Company assesses uncertain tax positions to determine whether the position will more likely than not be sustained upon examination by the Internal Revenue Service (IRS) or other taxing authorities. If the Company cannot reach a more-likely-than-not determination, no benefit is recorded. If the Company determines that the tax position is more likely than not to be sustained, the Company records the largest amount of benefit that is more likely than not to be realized when the tax position is settled. The Company recognizes interest and penalties, if any, related to uncertain tax positions in income tax expense. The Company files income tax returns in the U.S. federal jurisdiction and certain states in which it operates. Based on the timing of the filing of certain tax returns, the Company’s federal income tax returns for tax years 2017 and after remain subject to examination by the U.S. Internal Revenue Service. The statute of limitations on the Company’s state income tax returns generally conforms to the federal three-year statute of limitations.
Segments	Segments The Company operates in one segment based upon the financial information used by its chief operating decision maker in evaluating the financial performance of its business and allocating resources. The single segment represents the Company’s core business of providing engineering and related professional services to its customers.
Recently Issued Accounting Guidance	Recently Issued Accounting Guidance Accounting guidance not yet adopted Leases Financial Instruments – Credit Losses Goodwill

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Summary of Reconciliation of Net Income and Weighted Average Shares Outstanding for Calculation of Basic and Diluted Earnings per Share	The following table represents a reconciliation of the net income and weighted average shares outstanding for the calculation of basic and diluted earnings per share for the three and nine months ended September 30, 2021 and 2020 (in thousands, except share data): For the Three Months Ended September 30, For the Nine Months Ended September 30, 2021 2020 2021 2020 Numerator Net income (loss) $ 357 $ (1,248 ) $ 899 $ 794 Earnings allocated to non-vested shares 71 - 165 41 Subtotal $ 286 $ (1,248 ) $ 734 $ 753 Denominator Weighted average common shares outstanding 8,920,505 5,567,523 7,003,462 5,569,177 Effect of dilutive nominal options - - - 4,396 Effect of dilutive contingently earned shares 14,769 - 4,978 31,231 Dilutive average shares outstanding 8,935,274 5,567,523 7,008,440 5,604,804 Basic earnings (loss) per share $ 0.03 $ (0.22 ) $ 0.10 $ 0.14 Dilutive earnings (loss) per share $ 0.03 $ (0.22 ) $ 0.10 $ 0.13

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Summary of Preliminary Calculations of the Fair Values of Assets Acquired and Liabilities Assumed	The following summarizes the preliminary calculations of the fair values of MDA assets acquired and liabilities assumed as of the acquisition date (in thousands): Total Purchase Price $ 3,967 Purchase Price Allocation: Accounts Receivable 1,033 Contract assets 410 Property and equipment, net 39 Intangible Assets 990 Other assets 34 Accounts payable and other current liabilities (70 ) Contract liabilities (230 ) Total identifiable assets $ 2,206 Goodwill 1,761 Net assets acquired $ 3,967

Contracts in Progress (Tables)

Contracts in Progress (Tables)	9 Months Ended
	Sep. 30, 2021
Contract With Customer Asset And Liability [Abstract]
Summary of Costs and Estimated Earnings on Contracts	The following table reflects the calculation of the net balance of contract assets and contract liabilities. Costs and estimated earnings on contracts in progress consist of the following (in thousands): September 30, 2021 December 31, 2020 Costs incurred on uncompleted contracts $ 148,335 $ 113,856 Estimated contract earnings in excess of costs 198,528 151,423 Estimated contract earnings to date 346,863 265,279 Less: billed to date (340,753 ) (260,142 ) Net contract assets $ 6,110 $ 5,137

Notes Receivable (Tables)

Notes Receivable (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Summary of Notes Receivable	The Company has unsecured notes receivable from related parties, certain non-executive officers of the Company and an unrelated third party. The following is a summary of these notes receivable (in thousands): September 30, 2021 December 31, 2020 Officers, employees and affiliated entities - Interest accrues annually at rates ranging from 3.25% - 5.5%. The notes receivable mature through December 2021 $ 2,393 $ 2,479 Unrelated third party - Currently no interest is being accrued on this note. The note receivable matures in December 2023 903 903 Total: 3,296 3,382 Less: current portion Officers, employees and affiliates (1,120 ) (1,182 ) Unrelated third party - - Noncurrent portion $ 2,176 $ 2,200

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2021
Property Plant And Equipment [Abstract]
Summary of Property and Equipment for Fixed Assets	Property and equipment for fixed assets are as follows (in thousands): September 30, 2021 December 31, 2020 Computer equipment $ 1,260 $ 1,276 Survey equipment 4,444 4,444 Vehicles 460 463 Furniture and fixtures 1,661 1,638 Leasehold improvements 6,727 5,887 Software 283 283 Fixed assets pending lease financing 1 351 146 Total: 15,186 14,137 Less: accumulated depreciation (10,460 ) (9,912 ) Property and Equipment, net of capital leased assets $ 4,726 $ 4,225 1
Summary of Property and Equipment for Capital Leased Assets	Property and equipment for capital leased assets are as follows (in thousands): September 30, 2021 December 31, 2020 Equipment $ 13,393 $ 8,590 Vehicles 4,516 3,825 Total: 17,909 12,415 Less: accumulated amortization on leased assets (4,771 ) (1,283 ) Capital Leased Assets, net $ 13,138 $ 11,132

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Goodwill Resulting From Business Acquisitions	The following is a summary of goodwill resulting from business acquisitions held by the Company at September 30, 2021 and December 31, 2020 (in thousands): Goodwill Balance as of December 31, 2020 $ 9,179 Acquisition - KTA Group 2,544 Acquisition - McFarland-Dyer & Associates 1,761 Balance as of September 30, 2021 $ 13,484

Intangible Assets (Tables)

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Intangible Assets [Abstract]
Summary of Total Intangible Assets	Total intangible assets consisted of the following at September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Gross Amount Accumulated Amortization Net Balance Gross Amount Accumulated Amortization Net Balance Customer relationships $ 2,192 $ (534 ) $ 1,658 $ 809 $ (382 ) $ 427 Contract rights 488 (185 ) 303 150 (150 ) - Leasehold 160 (13 ) 147 - - - Non-complete agreement 137 (137 ) - 137 (114 ) 23 Domain name 281 - 281 281 - 281 Licensing rights 400 - 400 400 - 400 Total $ 3,658 $ (869 ) $ 2,789 $ 1,777 $ (646 ) $ 1,131
Summary of Weighted Average Useful Lives of Intangible Assets by Asset Class Used for Straight-line Expense Purposes	The following table summarizes the weighted average useful lives of intangible assets by asset class used for straight-line expense purposes: September 30, 2021 December 31, 2020 Customer relationships 12.8 5.0 Contract rights 2.4 2.0 Leasehold 9.2 - Non-compete agreement 3.0 3.0
Summary of Future amortization	Future amortization for the remainder of 2021 and for the succeeding years is as follows (in thousands): 2021 $ 100 2022 397 2023 336 2024 102 2025 102 Thereafter 1,071 Total $ 2,108

Notes Payable (Tables)

Notes Payable (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Instruments [Abstract]
Schedule of Notes Payable	Notes payable consist of the following (in thousands): September 30, 2021 December 31, 2020 Related parties: Shareholders - Interest accrues annually at rates ranging from 0.00% - 6.25%. The notes payable mature on various dates through October 2025. $ 4,767 $ 2,202 Unrelated third parties: Note payable for purchase of intangible asset 150 - Fixed line notes payable - see note 11 1,682 2,219 Total 6,599 4,421 Less: current portion (2,222 ) (1,592 ) Noncurrent portion $ 4,377 $ 2,829
Schedule of Future Principal Payments on Notes Payable	Future principal payments on notes payable for remainder of 2021 and succeeding years are as follows (in thousands): 2021 $ 744 2022 2,276 2023 1,932 2024 1,286 2025 361 Total $ 6,599

Stock Options (Tables)

Stock Options (Tables)	9 Months Ended
	Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Status of Stock Options Exercised, Including Substantive Options and Information about Options Outstanding and Exercisable	A summary of the status of stock options exercised, including the substantive options discussed in Note 3, is as follows: Number of shares Weighted Average Exercise Price Outstanding at January 1, 2021 53,277 $ 5.87 Granted - - Exercised (33,276 ) 5.64 Expired or cancelled - - Outstanding at September 30, 2021 20,001 $ 6.25 The following summarizes information about options outstanding and exercisable at January 1, 2021 and September 30, 2021: Options Outstanding and Exercisable Exercise Price Total Outstanding Weighted Average Remaining Life (Years) Weighted Average Exercise Price Total Exercisable January 1, 2021 $ 6.37 53,277 4.5 $ 5.87 53,277 September 30, 2021 $ 6.57 20,001 5.0 $ 6.25 20,001

Stock Bonus Plan (Tables)

Stock Bonus Plan (Tables)	9 Months Ended
	Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Activity of Restricted Shares Subject to Forfeiture	The following table summarizes the activity of restricted shares subject to forfeiture: Number of shares Weighted Average Grant Price Outstanding at January 1, 2021 702,926 $ 12.80 Granted 1,603,423 13.95 Vested (96,527 ) 12.80 Cancelled (108 ) 13.02 Outstanding at September 30, 2021 2,209,714 $ 13.63
Summary of Change in Liability to Common Shares Subject to Repurchase and Associated Non-cash Compensation Expense	The following table represents the change in the liability to common shares subject to repurchase and the associated non-cash compensation expense for the nine months ended September 30, 2021 and the year ended December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Beginning Balance $ 842 $ 8,267 Non-cash compensation from ratable vesting 41 2,712 Non-cash compensation from change in fair value of liability 2 2,457 Other stock activity, net 516 (786 ) Reclassification upon modification (1,394 ) (11,808 ) Ending balance $ 7 $ 842
Summary of Future Expense of Unvested Awards	The future expense of the unvested awards for the remainder of 2021 and succeeding years is as follows (in thousands): 2021 $ 2,527 2022 8,652 2023 7,378 2024 4,545 Thereafter 1,547 Total $ 24,649

Capital Leases (Tables)

Capital Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Capital Leases Of Lessee [Abstract]
Schedule of Future Minimum Commitments Under Non-cancelable Capital Leases	Future minimum commitments under non-cancelable capital leases for the remainder of 2021 and succeeding years are as follows (in thousands): 2021 $ 1,379 2022 5,088 2023 3,847 2024 1,654 2025 653 Total minimum lease payments $ 12,621 Less: amount representing interest (1,272 ) Present value of total net minimum lease payments $ 11,349 Less: current portion of net minimum lease payments (4,625 ) Long-term portion of net minimum lease payments $ 6,724

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Operating Lease Liabilities Payments Due Rolling Maturity [Abstract]
Summary of Future Minimum Lease Payments	Future minimum lease payments for the remainder of 2021 and for the succeeding years is as follows (in thousands): 2021 $ 1,471 2022 5,817 2023 4,613 2024 4,165 2025 3,661 Thereafter 9,378 Total $ 29,105

Nature of Business and Basis _2

Nature of Business and Basis of Presentation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 08, 2021	Jun. 04, 2021	May 11, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Nature Of Business And Basis Of Presentation [Line Items]
Proceeds from issuance of common stock				$ 297	$ 45
Initial Public Offering
Nature Of Business And Basis Of Presentation [Line Items]
Number of shares issued and sold		115,925	3,690,000
Shares price per share		$ 14	$ 14
Net proceeds from sale of common stock			$ 48,000
Proceeds from issuance of common stock		$ 1,600
Deferred offering costs reclassified into shareholder’s equity			$ 2,300
Deferred offering costs capitalized						$ 900
Over-Allotment Option
Nature Of Business And Basis Of Presentation [Line Items]
Number of shares issued and sold	3,805,925
Net proceeds from sale of common stock	$ 1,500
Proceeds from issuance of common stock	$ 53,300

Significant Accounting Polici_3

Significant Accounting Policies - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2021USD ($)Segment	Sep. 30, 2020
Accounting Policies [Abstract]
Revenue from contracts classified as lump sum	96.20%	95.50%
Revenue from exclusively time and material contracts	3.80%	4.50%
Remaining performance obligations | $	$ 114.6	$ 114.6
Effective tax rate		(18.60%)	37.03%
Number of operating segment | Segment		1

Significant Accounting Polici_4

Significant Accounting Policies - Additional Information (Details 1)	Sep. 30, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-10-01
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Remaining performance obligations expects to recognize	99.10%
Remaining performance obligations, expected satisfaction period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-10-01
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Remaining performance obligations expects to recognize	0.90%
Remaining performance obligations, expected satisfaction period	0 years

Earnings per Share - Additional

Earnings per Share - Additional Information (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Non-vested restricted shares	2,194,343	310,922	1,541,174	253,141
Substantive options shares	21,499	55,548	36,246	52,673

Earnings per Share - Summary of

Earnings per Share - Summary of Reconciliation of Net Income and Weighted Average Shares Outstanding for Calculation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net Income	$ 357	$ (1,248)	$ 899	$ 794
Earnings allocated to non-vested shares	71		165	41
Subtotal	$ 286	$ (1,248)	$ 734	$ 753
Basic	8,920,505	5,567,523	7,003,462	5,569,177
Effect of dilutive nominal options				4,396
Effect of dilutive contingently earned shares	14,769		4,978	31,231
Dilutive average shares outstanding	8,935,274	5,567,523	7,008,440	5,604,804
Basic	$ 0.03	$ (0.22)	$ 0.10	$ 0.14
Diluted	$ 0.03	$ (0.22)	$ 0.10	$ 0.13

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - McFarland-Dyer & Associates, Inc. $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021USD ($)$ / sharesshares	Sep. 30, 2021USD ($)$ / shares
Business Acquisition [Line Items]
Name of acquired entity		McFarland-Dyer & Associates, Inc.
Effective date of acquisition	Aug. 1, 2021
Total consideration paid	$ 3,967
Issuance of common stock for acquisitions | shares	32,143
Price per share | $ / shares	$ 12.85	$ 12.85
Equity issued in business combination, fair value	$ 400	$ 400
Cash, promissory note and assumed liabilities payment on business combination	3,600
Liability to contingent consideration	57,000,000	57,000,000
Identified intangible assets	990	990
Customer Relationships and Contract Rights
Business Acquisition [Line Items]
Identified intangible assets	$ 1,000	$ 1,000
Customer Relationships
Business Acquisition [Line Items]
Estimated useful life of intangibles	15 years
Contract Rights
Business Acquisition [Line Items]
Estimated useful life of intangibles	2 years 4 months 24 days
Promissory Note
Business Acquisition [Line Items]
Promissory note interest rate	3.25%	3.25%
Debt instrument repayment starting date	Jan. 15, 2022
Debt instrument repayment ending date	Apr. 15, 2024
Promissory Note | Maximum
Business Acquisition [Line Items]
Increase in promissory note	$ 700

Acquisitions - Summary of Preli

Acquisitions - Summary of Preliminary Calculations of the Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Purchase Price Allocation:
Goodwill	$ 13,484	$ 9,179
McFarland-Dyer & Associates, Inc.
Business Acquisition [Line Items]
Total Purchase Price	3,967
Purchase Price Allocation:
Accounts Receivable	1,033
Contract assets	410
Property and equipment, net	39
Intangible Assets	990
Other assets	34
Accounts payable and other current liabilities	(70)
Contract liabilities	(230)
Total identifiable assets	2,206
Goodwill	1,761
Net assets acquired	$ 3,967

Disaggregation of Revenue and_2

Disaggregation of Revenue and Contract Balances - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Abstract]
Revenue from contracts classified as lump sum	96.20%		95.50%
Revenue from exclusively time and material contracts	3.80%		4.50%
Remaining performance obligations	$ 114.6		$ 114.6
Contract with customer, liability, revenue recognized	$ 0.1	$ 0.4	$ 1.3	$ 4.5

Disaggregation of Revenue and_3

Disaggregation of Revenue and Contract Balances - Additional Information (Details 1)	Sep. 30, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-10-01
Disaggregation Of Revenue [Line Items]
Remaining performance obligations expects to recognize	99.10%
Remaining performance obligations, expected satisfaction period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-10-01
Disaggregation Of Revenue [Line Items]
Remaining performance obligations expects to recognize	0.90%
Remaining performance obligations, expected satisfaction period	0 years

Contracts in Progress - Summary

Contracts in Progress - Summary of Costs and Estimated Earnings on Contracts (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Contract With Customer Asset And Liability [Abstract]
Costs incurred on uncompleted contracts	$ 148,335	$ 113,856
Estimated contract earnings in excess of costs	198,528	151,423
Estimated contract earnings to date	346,863	265,279
Less: billed to date	(340,753)	(260,142)
Net contract assets	$ 6,110	$ 5,137

Notes Receivable - Summary of N

Notes Receivable - Summary of Notes Receivable (Details) - Unsecured Notes Receivable - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Officers, employees and affiliated entities - Interest accrues annually at rates ranging from 3.25% - 5.5%. The notes receivable mature through December 2021.	$ 2,393	$ 2,479
Unrelated third party - Currently no interest is being accrued on this note. The note receivable matures in December 2023.	903	903
Total:	3,296	3,382
Less: current portion
Officers, employees and affiliates	(1,120)	(1,182)
Noncurrent portion	$ 2,176	$ 2,200

Notes Receivable - Summary of_2

Notes Receivable - Summary of Notes Receivable (Parenthetical) (Details)	9 Months Ended
	Sep. 30, 2021
Unsecured Notes Receivable, Related Parties
Accounts Notes And Loans Receivable [Line Items]
Notes receivable, maturity	Dec. 31, 2021
Unsecured Notes Receivable, Related Parties | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes receivable, interest	3.25%
Unsecured Notes Receivable, Related Parties | Maximum
Accounts Notes And Loans Receivable [Line Items]
Notes receivable, interest	5.50%
Unsecured Notes Receivable, Unrelated Third Party
Accounts Notes And Loans Receivable [Line Items]
Notes receivable, interest	0.00%
Notes receivable, maturity	Dec. 31, 2023

Notes Receivable - Additional I

Notes Receivable - Additional Information (Details) - Unsecured Notes Receivable	9 Months Ended
	Sep. 30, 2021
Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes receivable, interest	3.25%
Maximum
Accounts Notes And Loans Receivable [Line Items]
Notes receivable, interest	5.50%

Property and Equipment, Net - S

Property and Equipment, Net - Summary of Property and Equipment for Fixed Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Total:	$ 15,186	$ 14,137
Less: accumulated depreciation	(10,460)	(9,912)
Property and Equipment, net of capital leased assets	4,726	4,225
Computer Equipment
Property Plant And Equipment [Line Items]
Total:	1,260	1,276
Survey Equipment
Property Plant And Equipment [Line Items]
Total:	4,444	4,444
Vehicles
Property Plant And Equipment [Line Items]
Total:	460	463
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total:	1,661	1,638
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total:	6,727	5,887
Software
Property Plant And Equipment [Line Items]
Total:	283	283
Fixed Assets Pending Lease Financing
Property Plant And Equipment [Line Items]
Total:	$ 351	$ 146

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Property Plant And Equipment [Abstract]
Depreciation expense for fixed assets	$ 0.2	$ 0.2	$ 0.6	$ 0.6
Amortization expense for capital leased assets	$ 1.3	$ 0.1	$ 3.7	$ 0.2

Property and Equipment, Net -_2

Property and Equipment, Net - Summary of Property and Equipment for Capital Leased Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Total:	$ 17,909	$ 12,415
Less: accumulated amortization on leased assets	(4,771)	(1,283)
Capital Leased Assets, net	13,138	11,132
Equipment
Property Plant And Equipment [Line Items]
Total:	13,393	8,590
Vehicles
Property Plant And Equipment [Line Items]
Total:	$ 4,516	$ 3,825

Goodwill - Summary of Goodwill

Goodwill - Summary of Goodwill Resulting From Business Acquisitions (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Goodwill [Line Items]
Beginning balance	$ 9,179
Ending balance	13,484
KTA Group
Goodwill [Line Items]
Acquisition	2,544
McFarland-Dyer & Associates
Goodwill [Line Items]
Acquisition	1,761
Ending balance	$ 1,761

Intangible Assets - Summary of

Intangible Assets - Summary of Total Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (869)	$ (646)
Net Balance	2,108
Gross Amount	3,658	1,777
Net Balance	2,789	1,131
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Amount	2,192	809
Accumulated Amortization	(534)	(382)
Net Balance	1,658	427
Contract Rights
Finite Lived Intangible Assets [Line Items]
Gross Amount	488	150
Accumulated Amortization	(185)	(150)
Net Balance	303
Leasehold
Finite Lived Intangible Assets [Line Items]
Gross Amount	160
Accumulated Amortization	(13)
Net Balance	147
Non-complete Agreement
Finite Lived Intangible Assets [Line Items]
Gross Amount	137	137
Accumulated Amortization	(137)	(114)
Net Balance		23
Domain Name
Finite Lived Intangible Assets [Line Items]
Gross Amount	281	281
Licensing Rights
Finite Lived Intangible Assets [Line Items]
Gross Amount	$ 400	$ 400

Intangible Assets - Additional

Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Intangible Assets [Line Items]
Amortization of intangible assets	$ 100	$ 100	$ 223	$ 190
Domain Name
Intangible Assets [Line Items]
Intangible assets acquired					$ 700
Licensing Rights
Intangible Assets [Line Items]
Intangible assets acquired					$ 700

Intangible Assets - Summary o_2

Intangible Assets - Summary of Weighted Average Useful Lives of Intangible Assets by Asset Class Used for Straight-line Expense Purposes (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Weighted average useful lives	12 years 9 months 18 days	5 years
Contract Rights
Finite Lived Intangible Assets [Line Items]
Weighted average useful lives	2 years 4 months 24 days	2 years
Leasehold
Finite Lived Intangible Assets [Line Items]
Weighted average useful lives	9 years 2 months 12 days
Non-complete Agreement
Finite Lived Intangible Assets [Line Items]
Weighted average useful lives	3 years	3 years

Intangible Assets - Summary o_3

Intangible Assets - Summary of Future amortization (Details) $ in Thousands	Sep. 30, 2021USD ($)
Finite Lived Intangible Assets Future Amortization Expense [Abstract]
2021	$ 100
2022	397
2023	336
2024	102
2025	102
Thereafter	1,071
Net Balance	$ 2,108

Bank Revolving Line of Credit_2

Bank Revolving Line of Credit and Fixed Credit Facilities - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
Notes Payable
Line Of Credit Facility [Line Items]
Debt instrument outstanding amount	$ 6,599,000		$ 6,599,000
Minimum [Member] | Notes Payable
Line Of Credit Facility [Line Items]
Debt instrument interest rate			0.00%		0.00%
Maximum | Notes Payable
Line Of Credit Facility [Line Items]
Debt instrument interest rate			6.25%		6.25%
Bank of America
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity							$ 12,400,000
Borrowing base description			The Borrowing Base is computed based upon a percentage of eligible receivables within each aging category under 120 days and is further refined for customer type. Receivables more than 120 days and those from related parties or affiliates are not considered to be eligible receivables for the Borrowing Base.
Line of credit facility increase in amount						$ 15,000,000
Line of credit interest expense	12,000	$ 35,000	$ 100,000	$ 200,000
Bank of America | Term Loan
Line Of Credit Facility [Line Items]
Debt instrument payment terms			thirty-six months
Debt instrument date of first repayment					Apr. 13, 2020
Debt instrument maturity date					Mar. 13, 2023
Debt instrument periodic payment					$ 29,294
Debt instrument interest rate					3.49%
Debt instrument outstanding amount	$ 500,000		$ 500,000		$ 800,000
Bank of America | Notes Payable | Term Loan
Line Of Credit Facility [Line Items]
Debt instrument principal amount					1,000,000
Bank of America | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Line of credit interest rate	3.60%	3.25%	3.60%	3.25%
Line of credit expiration date			Jul. 31, 2023
Line of credit outstanding amount	$ 0		$ 0		3,500,000
Bank of America | Revolving Credit Facility | LIBOR
Line Of Credit Facility [Line Items]
Line of credit basis spread on variable rate			1.25%
Bank of America | Fixed Line 1
Line Of Credit Facility [Line Items]
Line of credit interest rate	2.83%	2.90%	2.83%	2.90%
Line of credit outstanding amount	$ 400,000		$ 400,000		500,000
Line of credit remaining borrowing capacity	$ 0		$ 0
Line of credit payment date			Aug. 31, 2018
Line of credit frequency of principal payments description			sixty equal monthly installments
Line of credit facility maturity date			2023-08
Bank of America | Fixed Line 1 | Notes Payable
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity							$ 1,000,000
Bank of America | Fixed Line 1 | LIBOR
Line Of Credit Facility [Line Items]
Line of credit basis spread on variable rate			2.75%
Bank of America | Fixed Line 2
Line Of Credit Facility [Line Items]
Line of credit interest rate	2.08%		2.08%
Line of credit outstanding amount	$ 800,000		$ 800,000		$ 900,000
Line of credit remaining borrowing capacity	$ 0		$ 0
Line of credit payment date			Aug. 31, 2020
Line of credit frequency of principal payments description			sixty equal monthly installments
Line of credit facility maturity date			2025-09
Bank of America | Fixed Line 2 | Notes Payable
Line Of Credit Facility [Line Items]
Line of credit maximum borrowing capacity						$ 1,000,000
Bank of America | Fixed Line 2 | LIBOR
Line Of Credit Facility [Line Items]
Line of credit basis spread on variable rate			2.00%
Bank of America | Minimum [Member] | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Line of credit interest rate	2.00%		2.00%
Line of credit basis spread on variable rate			2.35%
Bank of America | Maximum | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Line of credit interest rate	2.60%		2.60%
Line of credit basis spread on variable rate			2.95%

Notes Payable - Schedule of Not

Notes Payable - Schedule of Notes Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Notes payable	$ 6,599	$ 4,421
Less: current portion	(2,222)	(1,592)
Notes payable, less current portion	4,377	2,829
Related Parties
Debt Instrument [Line Items]
Notes payable	4,767	2,202
Unrelated Third Parties | Purchase of Intangible Asset
Debt Instrument [Line Items]
Notes payable	150
Unrelated Third Parties | Fixed Line
Debt Instrument [Line Items]
Notes payable	$ 1,682	$ 2,219

Notes Payable - Schedule of N_2

Notes Payable - Schedule of Notes Payable (Parenthetical) (Details) - Notes Payable	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt instrument, maturity date, description	mature on various dates through October 2025.
Minimum [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	0.00%	0.00%
Maximum
Debt Instrument [Line Items]
Debt instrument interest rate	6.25%	6.25%

Notes Payable - Additional Info

Notes Payable - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Notes Payable
Debt Instrument [Line Items]
Interest expense	$ 0.1	$ 0.1	$ 0.2	$ 0.2

Notes Payable - Schedule of Fut

Notes Payable - Schedule of Future Principal Payments on Notes Payable (Details) - Notes Payable $ in Thousands	Sep. 30, 2021USD ($)
Debt Instrument [Line Items]
2021	$ 744
2022	2,276
2023	1,932
2024	1,286
2025	361
Total	$ 6,599

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Rent expense	$ 1,500,000	$ 1,900,000	$ 4,300,000	$ 6,000,000
Related party transaction, due from related party	400,000		400,000		$ 600,000
BCG Chantilly, LLC
Related Party Transaction [Line Items]
Related party transaction, due from (to) related party	0		0		0
Rent expense	$ 21,000	20,000	$ 61,000	60,000
BCG Chantilly, LLC | Mr. Bowman, Mr. Bruen and Mr. Hickey
Related Party Transaction [Line Items]
Ownership percentage	63.60%		63.60%
Bowman Lansdowne Development, LLC
Related Party Transaction [Line Items]
Notes receivable	$ 500,000		$ 500,000		500,000
Lansdowne Development Group, LLC
Related Party Transaction [Line Items]
Notes receivable	400,000		400,000		400,000
Accounts receivable	100,000		100,000		100,000
Bowman Realty Investments 2010, LLC
Related Party Transaction [Line Items]
Notes receivable	200,000		200,000		200,000
Alwington Farm Developers, LLC
Related Party Transaction [Line Items]
Notes receivable	1,200,000		1,200,000		1,200,000
Administrative, Accounting and Project Management Services
Related Party Transaction [Line Items]
Related Party transaction, cost of service			100,000	0
Related party transaction, due from related party	100,000	$ 0	100,000	$ 0
Leesburg Acquisition Partners (LAP) | Mr. Bowman, Mr. Bruen and Mr. Hickey
Related Party Transaction [Line Items]
Back charge payments	28,808
2015 Acquisition
Related Party Transaction [Line Items]
Related party transaction, due to related party	300,000		300,000		300,000
KTA Group Inc.
Related Party Transaction [Line Items]
Related party transaction, due to related party	$ 4,800,000		$ 4,800,000		$ 2,200,000

Stock Options - Additional Info

Stock Options - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		5 years
Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
New option shares granted		0
Intrinsic value per share of options		$ 7.18	$ 6.43
Cash payments received from exercise of options	$ 14,855	$ 42,140
Compensation costs	0	0
Unrecognized compensation costs	$ 0	$ 0
Minimum [Member] | Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		2 years
Maximum | Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		5 years

Stock Options - Summary of Stat

Stock Options - Summary of Status of Stock Options Exercised, Including Substantive Options (Details)	9 Months Ended
	Sep. 30, 2021$ / sharesshares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares Outstanding, Beginning Balance | shares	53,277
Number of shares, Exercised | shares	(33,276)
Number of shares Outstanding, Ending Balance | shares	20,001
Weighted Average Exercise Price, Beginning Balance | $ / shares	$ 5.87
Weighted Average Exercise Price, Exercised | $ / shares	5.64
Weighted Average Exercise Price, Ending Balance | $ / shares	$ 6.25

Stock Options - Summary of Info

Stock Options - Summary of Information about Options Outstanding and Exercisable (Details) - $ / shares	Jan. 01, 2021	Sep. 30, 2021	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Exercise Price	$ 6.37	$ 6.57
Total Options Outstanding	53,277	20,001	53,277
Weighted Average Remaining Life (Years)	4 years 6 months	5 years
Weighted Average Exercise Price	$ 5.87	$ 6.25	$ 5.87
Total Options Exercisable	53,277	20,001

Stock Bonus Plan - Additional I

Stock Bonus Plan - Additional Information (Details)	9 Months Ended
	Sep. 30, 2021shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares, granted	1,603,423
Options vesting period	5 years
Number of unvested stock awards	2,209,714
Number of unvested stock awards vesting start date	Oct. 1, 2021
Number of unvested stock awards vesting end date	May 11, 2026

Stock Bonus Plan - Summary of A

Stock Bonus Plan - Summary of Activity of Restricted Shares Subject to Forfeiture (Details)	9 Months Ended
	Sep. 30, 2021$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, Granted	1,603,423
Number of shares, Vested	(2,209,714)
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, Beginning balance	702,926
Number of shares, Granted	1,603,423
Number of shares, Vested	(96,527)
Number of shares, Cancelled	(108)
Number of shares, Ending balance	2,209,714
Weighted Average Grant Price, Beginning balance | $ / shares	$ 12.80
Weighted Average Grant Price, Granted | $ / shares	13.95
Weighted Average Grant Price, Vested | $ / shares	12.80
Weighted Average Grant Price, Cancelled | $ / shares	13.02
Weighted Average Grant Price, Ending balance | $ / shares	$ 13.63

Stock Bonus Plan - Summary of C

Stock Bonus Plan - Summary of Change in Liability to Common Shares Subject to Repurchase and Associated Non-Cash Compensation Expense (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning Balance	$ 842	$ 8,267
Non-cash compensation from ratable vesting	41	2,712
Non-cash compensation from change in fair value of liability	2	2,457
Other stock activity, net	516	(786)
Reclassification upon modification	(1,394)	(11,808)
Ending balance	$ 7	$ 842

Stock Bonus Plan - Summary of F

Stock Bonus Plan - Summary of Future expense of Unvested Awards (Details) $ in Thousands	Sep. 30, 2021USD ($)
Schedule Of Future Expense Of Unvested Awards [Abstract]
2021	$ 2,527
2022	8,652
2023	7,378
2024	4,545
Thereafter	1,547
Total	$ 24,649

Capital Leases - Additional Inf

Capital Leases - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended
	Sep. 30, 2020	Sep. 30, 2021
Capital Leased Assets [Line Items]
Capital lease liability	$ 0.4	$ 13.5
Bargain purchase price		$ 2.1
Minimum [Member]
Capital Leased Assets [Line Items]
Capital leases payment terms on lease agreements	30 months
Maximum
Capital Leased Assets [Line Items]
Capital leases payment terms on lease agreements	50 months

Capital Leases - Schedule of Fu

Capital Leases - Schedule of Future Minimum Commitments Under Non-cancelable Capital Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Capital Leases Future Minimum Payments Net Minimum Payments [Abstract]
2021	$ 1,379
2022	5,088
2023	3,847
2024	1,654
2025	653
Total minimum lease payments	12,621
Less: amount representing interest	(1,272)
Present value of total net minimum lease payments	11,349
Less: current portion of net minimum lease payments	(4,625)	$ (3,495)
Long-term portion of net minimum lease payments	$ 6,724

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)LeaseAgreement	Sep. 30, 2020USD ($)
Commitments And Contingencies Disclosure [Abstract]
Number of lease agreements | LeaseAgreement			3
Rent expense | $	$ 1.5	$ 1.9	$ 4.3	$ 6

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Future Minimum Lease Payments (Details) $ in Thousands	Sep. 30, 2021USD ($)
Operating Lease Liabilities Payments Due Rolling Maturity [Abstract]
2021	$ 1,471
2022	5,817
2023	4,613
2024	4,165
2025	3,661
Thereafter	9,378
Total	$ 29,105

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - Subsequent Event - shares	Nov. 10, 2021	Oct. 15, 2021	Oct. 08, 2021	Oct. 01, 2021
Gary Bowman, Bruce Labovitz, Michael Bruen and Robert Hickey | 21LTIP
Subsequent Event [Line Items]
Number of shares issued to executive officers	260,842
Triangle Site Design
Subsequent Event [Line Items]
Business acquisition, common stock issued				65,428
PCD Engineering, Inc.
Subsequent Event [Line Items]
Business acquisition, common stock issued			36,444
BTM Engineering
Subsequent Event [Line Items]
Business acquisition, common stock issued		0