ICF International (ICFI) 10-Q 5 May 22 2022 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2022	Apr. 29, 2022
Cover [Abstract]
Entity Registrant Name	ICF International, Inc.
Entity Central Index Key	0001362004
Trading Symbol	ICFI
Security Exchange Name	NASDAQ
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		18,793,455
Document Type	10-Q
Document Period End Date	Mar. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-33045
Entity Tax Identification Number	22-3661438
Entity Incorporation State Country Code	DE
Entity Address, Address Line One	9300 Lee Highway
Entity Address, City or Town	Fairfax
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	22031
City Area Code	703
Local Phone Number	934-3000
Title of each class	Common Stock
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false

CONSOLIDATED BALANCE SHEETS (UN

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents		$ 7,392	$ 8,254
Restricted cash - current	[1]	1,681	12,179
Contract receivables, net		205,827	237,684
Contract assets		189,147	137,867
Prepaid expenses and other assets		41,176	42,354
Income tax receivable		8,288	10,825
Total Current Assets		453,511	449,163
Property and Equipment, net		62,886	52,053
Other Assets:
Goodwill		1,045,503	1,046,760
Other intangible assets, net		74,274	79,645
Operating lease - right-of-use assets		172,133	177,417
Other assets		49,416	44,496
Total Assets		1,857,723	1,849,534
Current Liabilities:
Current portion of long-term debt		10,000	10,000
Accounts payable		95,706	105,652
Contract liabilities		31,491	39,665
Operating lease liabilities - current		30,530	34,901
Accrued salaries and benefits		94,931	85,517
Accrued subcontractors and other direct costs		40,165	39,400
Accrued expenses and other current liabilities		41,388	61,496
Total Current Liabilities		344,211	376,631
Long-term Liabilities:
Long-term debt		449,776	411,605
Operating lease liabilities - non-current		189,857	191,805
Deferred income taxes		47,684	41,913
Other long-term liabilities		22,893	24,110
Total Liabilities		1,054,421	1,046,064
Commitments and Contingencies (Note 19)
Stockholders’ Equity:
Preferred stock, par value $.001; 5,000,000 shares authorized; none issued
Common stock, par value $.001; 70,000,000 shares authorized; 23,679,411 and 23,535,671 shares issued at March 31, 2022 and December 31, 2021, respectively; 18,793,455 and 18,876,490 shares outstanding at March 31, 2022 and December 31, 2021, respectively		23	23
Additional paid-in capital		388,639	384,984
Retained earnings		664,532	649,298
Treasury stock, 4,885,956 and 4,659,181 shares at March 31, 2022 and December 31, 2021, respectively		(241,516)	(219,800)
Accumulated other comprehensive loss		(8,376)	(11,035)
Total Stockholders’ Equity		803,302	803,470
Total Liabilities and Stockholders’ Equity		$ 1,857,723	$ 1,849,534
[1]	Under a contract with a customer that commenced in the fourth quarter of fiscal year 2020, the Company received advance payments to be used to pay providers of services to the customer, a separate third-party. The advanced payments are treated as restricted cash - current as the Company is required under the contract to distribute the advanced funds to the third-party providers of services or return the advanced funds to the customer. Because the Company receives the advance payments from the customer, which must be refunded to the customer or remitted to a third party, the cash receipts are treated as borrowings rather than receipts for the provision of goods or services. Therefore, these cash receipts are presented in the consolidated statements of cash flows as financing cash inflows, “Receipt of restricted contract funds” with the subsequent payments classified as financing cash outflows, “Payment of restricted contract funds.” See Note 6 – Accrued Expenses and Other Current Liabilities for the corresponding liability.

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Statement Of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	70,000,000	70,000,000
Common stock, issued (in shares)	23,679,411	23,535,671
Common stock, outstanding (in shares)	18,793,455	18,876,490
Treasury stock, shares (in shares)	4,885,956	4,659,181

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue	$ 413,468	$ 378,478
Direct costs	258,158	232,082
Operating costs and expenses:
Indirect and selling expenses	117,452	109,982
Depreciation and amortization	4,838	5,270
Amortization of intangible assets	5,317	3,015
Total operating costs and expenses	127,607	118,267
Operating income	27,703	28,129
Interest expense	(2,697)	(2,683)
Other expense	(369)	(417)
Income before income taxes	24,637	25,029
Provision for income taxes	6,775	6,678
Net income	$ 17,862	$ 18,351
Earnings per Share:
Basic	$ 0.95	$ 0.97
Diluted	$ 0.94	$ 0.96
Weighted-average Shares:
Basic	18,795	18,885
Diluted	19,012	19,118
Cash dividends declared per common share	$ 0.14	$ 0.14
Other comprehensive income, net of tax	$ 2,659	$ 2,780
Comprehensive income, net of tax	$ 20,521	$ 21,131

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flows from Operating Activities
Net income	$ 17,862	$ 18,351
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
(Recovery of) provision for credit losses	(170)	5,334
Deferred income taxes	4,505	1,838
Non-cash equity compensation	3,563	3,275
Depreciation and amortization	10,154	8,285
Facilities consolidation reserve	(78)	(75)
Amortization of debt issuance costs	154	155
Impairment of long-lived assets		303
Other adjustments, net	353	457
Changes in operating assets and liabilities, net of the effects of acquisitions:
Net contract assets and liabilities	(59,689)	(19,750)
Contract receivables	31,473	2,531
Prepaid expenses and other assets	(11,708)	2,016
Operating lease assets and liabilities, net	(532)	(1,143)
Accounts payable	(9,815)	(354)
Accrued salaries and benefits	9,513	4,715
Accrued subcontractors and other direct costs	1,078	(33,466)
Accrued expenses and other current liabilities	(6,883)	8,303
Income tax receivable and payable	2,621	3,924
Other liabilities	544	262
Net Cash (Used in) Provided by Operating Activities	(7,055)	4,961
Cash Flows from Investing Activities
Capital expenditures for property and equipment and capitalized software	(6,454)	(3,595)
Cash Flows from Financing Activities
Advances from working capital facilities	329,690	185,755
Payments on working capital facilities	(291,662)	(174,674)
Receipt of restricted contract funds	4,301	451
Payment of restricted contract funds	(14,714)	(27,081)
Proceeds from exercise of options	92	2,702
Dividends paid	(2,644)	(2,642)
Net payments for stock issuances and buybacks	(22,268)	(17,104)
Payments on business acquisition liabilities	(121)	(682)
Net Cash Provided by (Used in) Financing Activities	2,674	(33,275)
Effect of Exchange Rate Changes on Cash, Cash Equivalents, and Restricted Cash	(525)	745
Decrease in Cash, Cash Equivalents, and Restricted Cash	(11,360)	(31,164)
Cash, Cash Equivalents, and Restricted Cash, Beginning of Period	20,433	81,987
Cash, Cash Equivalents, and Restricted Cash, End of Period	9,073	50,823
Supplemental Disclosure of Cash Flow Information
Interest	2,760	2,637
Income taxes	949	$ 961
Non-cash investing and financing transactions:
Tenant improvements funded by lessor	$ 10,843

Basis of Presentation and Natur

Basis of Presentation and Nature of Operations	3 Months Ended
	Mar. 31, 2022
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation and Nature of Operations	NOTE 1 - BASIS OF PRESENTATION AND NATURE OF OPERATIONS Basis of Presentation The accompanying consolidated financial statements include the accounts of ICF International, Inc. (“ICFI”) and its principal subsidiary, ICF Consulting Group, Inc. (“Consulting,” and together with ICFI, the “Company”), and have been prepared in accordance with United States (“U.S.”) generally accepted accounting principles (“U.S. GAAP”). Consulting is a wholly owned subsidiary of ICFI. ICFI is a holding company with no operations or assets other than its investment in the common stock of Consulting. All other subsidiaries of the Company are wholly owned by Consulting. All significant intercompany transactions and balances have been eliminated. Nature of Operations The Company provides professional services and technology-based solutions to government and commercial clients, including management, marketing, technology, and policy consulting and implementation services, in the areas of energy, environment, and infrastructure; health, education, and social programs; safety and security; and consumer and financial. The Company offers a full range of services to these clients throughout the entire life cycle of a policy, program, project, or initiative, from research and analysis and assessment and advice to design and implementation of programs and technology-based solutions, and the provision of engagement services and programs. The Company’s major clients are U.S. federal government departments and agencies, most significantly the Department of Health and Human Services, Department of State, and Department of Defense. The Company also serves U.S. state (including territories) and local government departments and agencies, international governments, and commercial clients worldwide. Commercial clients include airlines, airports, electric and gas utilities, health care companies, banks and other financial services companies, transportation, travel and hospitality firms, non-profits/associations, manufacturing firms, retail chains, and distribution companies. The term “federal” or “federal government” refers to the U.S. federal government, and “state and local” or “state and local government” refers to U.S. state (including territories) and local governments, unless otherwise indicated. The Company, incorporated in Delaware, is headquartered in Fairfax, Virginia. The Company maintains additional offices throughout the world, including over 50 offices in the U.S. and U.S. territories and more than 20 offices in key markets outside the U.S., including offices in the United Kingdom, Belgium, China, India, and Canada. Use of Estimates The preparation of consolidated 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 liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. Areas of the consolidated financial statements where estimates may have the most significant effect include contractual and regulatory reserves, valuation and lives of tangible and intangible assets, contingent consideration related to business acquisitions, impairment of goodwill and long-lived assets, accrued liabilities, revenue recognition and costs to complete fixed-price contracts, bonus and other incentive compensation, stock-based compensation, reserves for tax benefits and valuation allowances on deferred tax assets, provisions for income taxes, collectability of receivables, and loss accruals for litigation. Actual results experienced by the Company may differ from management's estimates. Interim Results The unaudited consolidated financial statements included in this Quarterly Report on Form 10-Q have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). These rules and regulations permit some of the information and footnote disclosures normally included in financial statements, prepared in accordance with U.S. GAAP, to be condensed or omitted. In management’s opinion, the unaudited consolidated financial statements contain all adjustments that are of a normal recurring nature, necessary for a fair presentation of the results of operations and financial position of the Company for the interim periods presented. The Company reports operating results and financial data in one operating segment and reporting unit. Operating results for the three months periods ended March 31, 2022 and 2021 are not necessarily indicative of the results that may be expected for the full year. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements for the fiscal year ended December 31, 2021 and the notes thereto included in the Company’s Annual Report on Form 10-K, filed with the SEC on February 25, 2022 (the “Annual Report”). Recent Accounting Pronouncements Recent Accounting Pronouncements Not Yet Adopted Reference Rate Reform In March 2020, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The standard is intended to provide temporary optional expedients and exceptions to the U.S. GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the expected market transition from the London Interbank Offered Rate (“LIBOR”) and other interbank offered rates to alternative reference rates. The provisions of this ASU are elective and apply to all entities, subject to meeting certain criteria, that have debt or hedging contracts, among other contracts, that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The Company can elect to not apply certain modification accounting requirements to contracts affected by reference rate reform if certain criteria are met. Also, the Company can elect various optional expedients that would allow it to continue to apply hedge accounting for hedging relationships affected by reference rate reform if certain criteria are met. This guidance was effective beginning on March 12, 2020, and the Company may elect to apply the amendments prospectively through December 31, 2022. The Company is currently evaluating the impact of the transition from LIBOR to alternative reference interest rates for the current Credit Facility (see Note 7—Long-Term Debt) and the related interest rate hedges (see Note 9—Derivative Instruments and Hedging Activities) but does not expect a significant impact to its operating results, financial position, or cash flows.

Restricted Cash

Restricted Cash	3 Months Ended
	Mar. 31, 2022
Cash And Cash Equivalents [Abstract]
Restricted Cash	NOTE 2 – RESTRICTED CASH The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheets for the periods presented to the total of cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows for the three months ended March 31, 2022 and 2021: March 31, 2022 March 31, 2021 Beginning Ending Beginning Ending Cash and cash equivalents $ 8,254 $ 7,392 $ 13,841 $ 8,592 Restricted cash - current (1) 12,179 1,681 68,146 42,231 Total of cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows $ 20,433 $ 9,073 $ 81,987 $ 50,823 (1) Under a contract with a customer that commenced in the fourth quarter of fiscal year 2020, the Company received advance payments to be used to pay providers of services to the customer, a separate third-party. The advanced payments are treated as restricted cash - current as the Company is required under the contract to distribute the advanced funds to the third-party providers of services or return the advanced funds to the customer. Because the Company receives the advance payments from the customer, which must be refunded to the customer or remitted to a third party, the cash receipts are treated as borrowings rather than receipts for the provision of goods or services. Therefore, these cash receipts are presented in the consolidated statements of cash flows as financing cash inflows, “Receipt of restricted contract funds” with the subsequent payments classified as financing cash outflows, “Payment of restricted contract funds.” See Note 6 – Accrued Expenses and Other Current Liabilities for the corresponding liability.

Contract Receivables, Net

Contract Receivables, Net	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Contract Receivables, Net	NOTE 3 – CONTRACT RECEIVABLES, NET Contract receivables, net consisted of the following: March 31, 2022 December 31, 2021 Billed and billable $ 211,827 $ 245,425 Allowance for expected credit losses (6,000 ) (7,741 ) Contract receivables, net $ 205,827 $ 237,684

Goodwill

Goodwill	3 Months Ended
	Mar. 31, 2022
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	NOTE 4 – GOODWILL The changes in the carrying amount of goodwill during the three-months period ended March 31, 2022 were as follows: Balance as of December 31, 2021 $ 1,046,760 Measurement period adjustments - ESAC acquisition 87 Measurement period adjustments - Creative Systems and Consulting acquisition (1 ) Effect of foreign currency translation (1,343 ) Balance as of March 31, 2022 $ 1,045,503

Leases

Leases	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Leases	NOTE 5 – LEASES The Company has operating leases for facilities and equipment which have remaining terms ranging from 1 to 17 years. The leases may include options to extend the lease periods for up to 5 years at rates approximating market rates and/or options to terminate the leases within 1 year. The leases may include a residual value guarantee or a responsibility to return the property to its original state of use. A limited number of leases contain provisions that provide for rental increases based on consumer price indices. The change in rent expense resulting from changes in these indices are included within variable rent. The Company’s lease cost is recognized on a straight-line basis over the lease term. Lease cost consists of the following: Three Months Ended March 31, 2022 March 31, 2021 Operating lease cost $ 9,502 $ 8,793 Short-term lease cost 133 131 Variable lease cost 20 10 Sublease income (10 ) — Total lease cost $ 9,645 $ 8,934 Future minimum lease payments under non-cancellable leases as of March 31, 2022 were as follows: March 31, 2023 $ 33,057 March 31, 2024 20,984 March 31, 2025 23,628 March 31, 2026 21,643 March 31, 2027 20,369 Thereafter 152,425 Total future minimum lease payments 272,106 Less: Interest (51,719 ) Total operating lease liabilities $ 220,387 Operating lease liabilities - current $ 30,530 Operating lease liabilities - non-current 189,857 Total operating lease liabilities $ 220,387 Other information related to operating leases is as follows: March 31, 2022 March 31, 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 10,110 $ 4,130 Right-of-use assets obtained in exchange for operating lease liabilities $ 2,952 $ 142 Weighted-average remaining lease term - operating leases 11.5 5.8 Weighted-average discount rate - operating leases 3.2 % 3.4 %

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	3 Months Ended
	Mar. 31, 2022
Payables And Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	NOTE 6 – ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES At March 31, 2022 and December 31, 2021, accrued expenses and other current liabilities consisted of the following: March 31, 2022 December 31, 2021 Deposits $ 21,162 $ 21,088 Restricted contract funds 1,668 12,165 Accrued IT and software licensing costs 1,231 1,702 Accrued taxes and insurance premiums 3,632 5,267 Accrued facilities rental and lease exit costs 1,027 1,291 Accrued interest 171 212 Accrued professional services 2,363 3,068 Accrued dividends 2,627 2,643 Contingent and contractual liabilities from acquisitions 1,212 1,245 Interest rate swap liability - current 508 3,026 Forward contract agreements liability - current 182 — Other accrued expenses and current liabilities 5,605 9,789 Total accrued expenses and other current liabilities $ 41,388 $ 61,496

Long-Term Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 7 – LONG-TERM DEBT At March 31, 2022 and December 31, 2021, debt consisted of: March 31, 2022 December 31, 2021 Average Interest Rate Outstanding Balance Average Interest Rate Outstanding Balance Term Loan $ 180,000 $ 182,500 Revolving Credit 281,583 241,055 Total before debt issuance costs 1.40% 461,583 1.65% 423,555 Unamortized debt issuance costs (1,807 ) (1,950 ) $ 459,776 $ 421,605 Current portion of long-term debt $ 10,000 $ 10,000 Long-term debt - non-current 449,776 411,605 $ 459,776 $ 421,605 On March 3, 2020, the Company entered into the First Amendment (the “First Amendment”) to the Fifth Amended and Restated Business Loan and Security Agreement with a group of ten (i) As a result, the Credit Facility now consists of (i) The Company has the option to borrow funds under the Credit Facility at interest rates based on both LIBOR (1, 3, or 6-month rates) and the Base Rate (as defined herein), at its discretion, plus their applicable margins. Base Rates are fluctuating per annum rates of interest equal to the highest of (i) the Overnight Bank Funding Rate, plus 0.5%, (ii) the Prime Rate (as defined under the Credit Facility) and (iii) the daily LIBOR rate, plus a LIBOR margin between 1.00% and 2.00% based on its Leverage Ratio (as defined under the Credit Facility). The interest accrued based on LIBOR rates is to be paid on the last business day of the interest period (1, 3, or 6 months), while interest accrued based on the Base Rate is to be paid in quarterly installments. The Credit Facility also provides for letters of credit aggregating up to $60.0 million which reduce the funds available under the Credit Facility when issued. The unused portion of the Credit Facility is subject to a commitment fee between 0.13% and 0.25% per annum based on the Leverage Ratio. The Credit Facility is collateralized by substantially all the assets of the Company and requires that the Company remain in compliance with certain financial and non-financial covenants. The financial covenants require, among other things, that the Company maintain at all times an Interest Coverage Ratio (as defined under the Credit Facility) of not less than 3.00 to 1.00 and a Leverage Ratio of not more than 4.00 to 1.00 (subject to a step-up to 4.25 to 1.0 for a four quarter period following permitted acquisitions as defined under the Credit Facility) for each fiscal quarter. As of March 31, 2022 , the Company was in compliance with its covenants under the Credit Facility. The Credit Facility also has a conforming dividend covenant that allows the Company to pay dividends as long as it remain s in compliance with the financial covenants set forth in the Credit Facility . As of March 31, 2022, the Company had $461.6 million of long-term debt outstanding from the Credit Facility (including the term loan of $180.0 million, exclusive of unamortized debt issuance costs of $1.8 million), and unused borrowing capacity under the $600.0 million revolving line of credit of $315.1 million Future scheduled repayments of debt principal are as follows: Payments due by Term Loan Revolving Credit Total March 31, 2023 $ 10,000 $ — $ 10,000 March 30, 2024 15,000 — 15,000 March 3, 2025 (Maturity) 155,000 281,583 436,583 Total $ 180,000 $ 281,583 $ 461,583

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2022
Revenue From Contract With Customer [Abstract]
Revenue Recognition	NOTE 8 – REVENUE RECOGNITION Disaggregation of Revenue The Company disaggregates revenue from clients, most of which is earned over time, into categories that depict how the nature, amount and uncertainty of revenue and cash flows are affected by economic and business factors. Those categories are client market, client type and contract mix. Client markets provide insight into the breadth of the Company’s expertise. In classifying revenue by client market, the Company attributes revenue from a client to the market that the Company believes is the client’s primary market. The Company also classifies revenue by the type of entity for which it does business, which is an indicator of the diversity of its client base. The Company attributes revenue generated as a subcontractor to a commercial company as government revenue when the ultimate client is a government agency or department. Disaggregation by contract mix provides insight in terms of the degree of performance risk that the Company has assumed. Fixed-price contracts are considered to provide the highest amount of performance risk as the Company is required to deliver a scope of work or level of effort for a negotiated fixed price. Time-and-materials contracts require the Company to provide skilled employees on contracts for negotiated fixed hourly rates. Since the Company is not required to deliver a scope of work, but merely skilled employees, it considers these contracts to be less risky than a fixed-price agreement. Cost-based contracts are considered to provide the lowest amount of performance risk since the Company is generally reimbursed for all contract costs incurred in performance of contract deliverables with only the amount of incentive or award fees (if applicable) dependent on the achievement of negotiated performance requirements . Changes in the three months ended March 31, 2022 compared to the three months ended March 31, 2021 were driven primarily by an increase of $39.4 million and $6.2 million from U.S. federal government’s health, education, and social programs and energy, environment, and infrastructure client markets, respectively, $7.4 million and $0.5 million from U.S. state and local government’s health, education, and social programs and energy, environment, and infrastructure client markets, respectively, and $1.7 million from international government’s health, education, and social programs client market, offset by decreases of $11.1 million and $0.6 million from international government’s energy, environment, and infrastructure and safety and security client markets, respectively, $3.5 million, $2.6 million, and $1.2 million from commercial consumer and financial, energy, environment, and infrastructure, and health, education, and social programs client markets, respectively, and $1.2 million from U.S. federal government safety and security client market. Three Months Ended March 31, 2022 2021 Dollars Percent Dollars Percent Client Markets: Energy, environment, and infrastructure $ 156,644 38 % $ 163,582 43 % Health, education, and social programs 205,532 50 % 158,268 42 % Safety and security 29,400 7 % 31,198 8 % Consumer and financial 21,892 5 % 25,430 7 % Total $ 413,468 100 % $ 378,478 100 % Three Months Ended March 31, 2022 2021 Dollars Percent Dollars Percent Client Type: U.S. federal government $ 220,343 53 % $ 175,985 46 % U.S. state and local government 64,833 16 % 56,878 15 % International government 26,720 6 % 36,746 10 % Total Government 311,896 75 % 269,609 71 % Commercial 101,572 25 % 108,869 29 % Total $ 413,468 100 % $ 378,478 100 % Three Months Ended March 31, 2022 2021 Dollars Percent Dollars Percent Contract Mix: Time-and-materials $ 165,084 40 % $ 159,836 42 % Fixed price 183,896 44 % 147,469 39 % Cost-based 64,488 16 % 71,173 19 % Total $ 413,468 100 % $ 378,478 100 % Contract Balances: Contract assets consist primarily of unbilled amounts resulting from long-term contracts when revenue recognized exceeds the amount billed often due to billing schedule timing. Contract liabilities result from advance payments received on a contract or from billings in excess of revenue recognized on long-term contracts due to billing schedule timing. The following table summarizes the contract balances as of March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 $ Change % Change Contract assets $ 189,147 $ 137,867 $ 51,280 37.2 % Contract liabilities (31,491 ) (39,665 ) 8,174 (20.6 %) Net contract assets (liabilities) $ 157,656 $ 98,202 $ 59,454 60.5 % The net contract assets (liabilities) as of March 31, 2022 increased by $59.5 million as compared to December 31, 2021. The increase in net contract assets (liabilities) is primarily due to the timing difference between the performance of services and billings to and payments from customers. There were no material changes to contract balances due to impairments or credit losses during the period. During the three months ended March 31, 2022 and 2021, the Company recognized $20.9 million and $15.1 million in revenue related to the contract liabilities balance at December 31, 2021 and 2020, respectively. Performance Obligations: The Company had $1.1 billion in unfulfilled performance obligations as of March 31, 2022 which primarily entail the future delivery of services for which revenue will be recognized over time. The obligations relate to continued or additional services required on non-cancelable contracts and were generally valued using an estimated cost-plus margin approach, with variable consideration being estimated at the most likely amount. The amounts exclude marketing offers, which are negotiated but unexercised contract options and indefinite delivery/indefinite quantity (IDIQ) and similar arrangements that provided a framework for customers to issue specific tasks, delivery, or purchase orders in the future.

Derivative instruments and Hedg

Derivative instruments and Hedges Activities	3 Months Ended
	Mar. 31, 2022
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative instruments and Hedges Activities	NOTE 9 – The Company uses interest rate swap arrangements (the “Swaps”) to manage or hedge its interest rate risk. Notwithstanding the terms of the Swaps, the Company is ultimately obligated for all amounts due and payable under the Credit Facility. The Company does not use such instruments for speculative or trading purposes. The Company designated the Swaps as cash flow hedges. Derivative instruments are recorded on the consolidated balance sheets at fair value. Unrealized gains and losses on derivatives designated as cash flow hedges are reported in other comprehensive income (loss) (“AOCI”) and reclassified to earnings in a manner that matches the timing of the earnings impact of the hedged transactions. Management intends that the Swaps remain effective and, on a quarterly basis, evaluates them to determine their effectiveness or ineffectiveness and records the change in fair value as an adjustment to other comprehensive income or loss. A summary of interest rate swap derivatives designated as cash flow hedges as of March 31, 2022 are as follows: Dates of Effected Cash Flows Date of Interest Rate Swap Agreement Notional Amount ($million) Paid Fixed Interest Rate% Beginning Ending September 30, 2016 (1) $ 100.0 - January 31, 2018 January 31, 2023 August 31, 2017 $ 25.0 1.8475% August 31, 2018 August 31, 2023 August 8, 2018 $ 50.0 2.8540% August 31, 2018 August 31, 2023 August 8, 2018 $ 25.0 2.8510% August 31, 2018 August 31, 2023 February 20, 2020 $ 100.0 1.2940% February 28, 2020 February 28, 2025 (1) On December 1, 2016, the Company sold the interest rate hedge agreement. The fair value of the interest rate hedge, as of the date of the sale, was recorded in other comprehensive income, net of tax. The gain from the sale will be recognized into earnings when earnings are impacted by the cash flows of the previously hedged variable interest rate.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 10 – The Company’s effective tax rate for the three months ended March 31, 2022 and 2021 was 27.5% and 26.7%, respectively. The Company is subject to federal income tax as well as taxes in various state, local and foreign jurisdictions. Tax statutes and regulations within each jurisdiction are subject to interpretation and require the application of significant judgment. The Company’s 2018 through 2020 tax years remain subject to examination by the Internal Revenue Service for federal tax purposes. Certain significant state, local and foreign tax returns also remain open under the applicable statute of limitations and, as such, are subject to examination for the tax years from 2017 to 2020. The total amount of unrecognized tax benefits as of March 31, 2022 and 2021 was $0.5 million and $0.7 million, respectively, that would impact the effective tax rate if recognized. The Company’s policy is not to recognize accrued interest and penalties related to unrecognized tax benefits as a component of tax expense. The Company did not have any accrued penalty and interest at March 31, 2022 and 2021, respectively. The Company has made no provision for deferred U.S. income taxes or additional foreign taxes on future unremitted earnings of its controlled foreign subsidiaries because the Company considers these earnings to be permanently invested. Pursuant to the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act, the Company exercised the option to defer payment of the employer portion of the Social Security tax, with 50% to be repaid by December 31, 2021 and the remainder by December 31, 2022. The Company deferred payment of approximately $20.9 million of employer Social Security taxes during the year ended December 31, 2020 and repaid 50% during the third quarter of 2021. As of March 31, 2022 the remaining deferred payment is included in accrued salaries and benefits in the Company’s consolidated balance sheets .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2022
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Accumulated Other Comprehensive Loss	NOTE 11 – ACCUMULATED OTHER COMPREHENSIVE LOSS Accumulated other comprehensive loss as of March 31, 2022 and 2021 included the following: Three Months Ended March 31, 2022 Foreign Currency Translation Adjustments Gain on Sale of Interest Rate Hedge Agreement (1) Change in Fair Value of Interest Rate Hedge Agreements (2) Total Accumulated other comprehensive (loss) income at December 31, 2021 $ (8,759 ) $ 569 $ (2,845 ) $ (11,035 ) Current period other comprehensive (loss) income: Other comprehensive (loss) income before reclassifications (2,304 ) — 5,509 3,205 Amounts reclassified from accumulated other comprehensive (loss) income (3) — (180 ) 902 722 Effect of taxes (4) 363 48 (1,679 ) (1,268 ) Total current period other comprehensive (loss) income (1,941 ) (132 ) 4,732 2,659 Accumulated other comprehensive (loss) income at March 31, 2022 $ (10,700 ) $ 437 $ 1,887 $ (8,376 ) Three Months Ended March 31, 2021 Foreign Currency Translation Adjustments Gain on Sale of Interest Rate Hedge Agreement (1) Change in Fair Value of Interest Rate Hedge Agreement (2) Total Accumulated other comprehensive (loss) income at December 31, 2020 $ (7,210 ) $ 1,096 $ (7,992 ) $ (14,106 ) Current period other comprehensive income (loss): Other comprehensive income before reclassifications 968 — 1,882 2,850 Amounts reclassified from accumulated other comprehensive (loss) income (3) — (180 ) 907 727 Effect of taxes (4) (104 ) 49 (742 ) (797 ) Total current period other comprehensive income (loss) 864 (131 ) 2,047 2,780 Accumulated other comprehensive (loss) income at March 31, 2021 $ (6,346 ) $ 965 $ (5,945 ) $ (11,326 ) (1) Represents the unamortized value of an interest rate hedge agreement, designated as a cash flow hedge, which was sold on December 1, 2016. The fair value of the interest rate hedge agreement, at the date of the sale, was recorded in other comprehensive income, net of tax, and is being reclassified to interest expense when earnings are impacted by the hedged items and as interest payments are made on the Credit Facility from January 31, 2018 to January 31, 2023 (see Note 9—Derivative Instruments and Hedging Activities). (2) Represents the change in fair value of interest rate hedge agreements designated as a cash flow hedges. The fair value of the interest rate hedge agreements was recorded in other comprehensive income, net of tax, and will be reclassified to earnings when earnings are impacted by the hedged items, as interest payments are made on the Credit Facility from August 31, 2018 to February 28, 2025 (3) The Company expects to reclassify $0.6 million net gains related to the Gain on Sale of Interest Rate Hedge Agreement and $0.5 million net losses related to the Change in Fair Value of Interest Rate Hedge Agreement from accumulated other comprehensive loss into earnings during the next 12 months. ( 4 ) The Company’s effective tax rate for the three months ended March 31, 2022 and 2021 was 27.5% and 26.7%, respectively.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2022
Stockholders Equity Note [Abstract]
Stockholders' Equity	NOTE 12 – STOCKHOLDERS’ EQUITY Changes in stockholders’ equity for the three months ended March 31, 2022 and 2021 are as follows: Three Months Ended March 31, 2022 Common Stock Additional Paid-in Retained Treasury Stock Accumulated Other Comprehensive Shares Amount Capital Earnings Shares Amount Loss Total Balance at December 31, 2021 18,876 $ 23 $ 384,984 $ 649,298 4,659 $ (219,800 ) $ (11,035 ) $ 803,470 Net income — — — 17,862 — — — 17,862 Other comprehensive income — — — — — — 2,659 2,659 Equity compensation — — 3,563 — — — — 3,563 Exercise of stock options — — 92 — — — — 92 Issuance of shares pursuant to vesting of restricted stock units 144 — — — — — — — Net payments for stock issuances and buybacks (227 ) — — — 227 (21,716 ) — (21,716 ) Dividends declared — — — (2,628 ) — — — (2,628 ) Balance at March 31, 2022 18,793 $ 23 $ 388,639 $ 664,532 4,886 $ (241,516 ) $ (8,376 ) $ 803,302 Three Months Ended March 31, 2021 Common Stock Additional Paid-in Retained Treasury Stock Accumulated Other Comprehensive Shares Amount Capital Earnings Shares Amount Loss Total Balance at December 31, 2020 18,910 $ 23 $ 369,058 $ 588,731 4,395 $ (196,745 ) $ (14,106 ) $ 746,961 Net income — — — 18,351 — — — 18,351 Other comprehensive loss — — — — — — 2,780 2,780 Equity compensation — — 3,275 — — — — 3,275 Exercise of stock options 3 — 87 — — — — 87 Issuance of shares pursuant to vesting of restricted stock units 153 — — — — — — — Net payments for stock issuances and buybacks (207 ) — — — 207 (17,580 ) — (17,580 ) Dividends declared — — — (2,641 ) — — — (2,641 ) Balance at March 31, 2021 18,859 $ 23 $ 372,420 $ 604,441 4,602 $ (214,325 ) $ (11,326 ) $ 751,233

Accounting for Stock-based Comp

Accounting for Stock-based Compensation	3 Months Ended
	Mar. 31, 2022
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Accounting for Stock-based Compensation	NOTE 13 – ACCOUNTING FOR STOCK-BASED COMPENSATION On April 4, 2018, the Company’s board of directors (the “board”) approved the 2018 Omnibus Incentive Plan (the “2018 Omnibus Plan”), which was subsequently approved by the stockholders and became effective on May 31, 2018 (the “Effective Date”). The 2018 Omnibus Plan replaced the previous 2010 Omnibus Incentive Plan (the “Prior Plan”). The 2018 Omnibus Plan was amended on May 28, 2020 to increase the number of shares available for issuance. The 2018 Omnibus Plan, as amended, allows the Company to grant 1,600,000 shares using stock options, stock appreciation rights, restricted stock, restricted stock units (“RSU”), performance units and performance share awards (“PSA”), cash-settled restricted stock units (“CSRSU”), and other stock-based awards to all officers, key employees, and non-employee directors of the Company. Outstanding shares granted under the Prior Plan, totaling 26,120 as of March 31, 2022, remain subject to its terms and conditions, and no additional awards from the Prior Plan are to be made after the Effective Date. As of March 31, 2022, the Company had approximately 789,147 shares available for grant under the 2018 Omnibus Plan. CSRSUs have no impact on the shares available for grant under the Omnibus Plan, nor on the calculated shares used in earnings per share calculations. During the three months ended March 31, 2022, the Company granted to its employees 117,136 shares in the form of RSUs with an average grant date fair value of $91.79, and the equivalent value of 56,718 shares in the form of CSRSUs with an average grant date fair value of $91.79. During the three months ended March 31, 2022, the Company also granted 35,705 shares in the form of PSAs to its employees with a grant date fair value of $93.97 per share. The RSUs, CSRSUs and PSAs granted are generally subject to service-based vesting conditions, with the PSAs also having performance-based vesting conditions. The performance conditions for the PSAs granted in 2022 have a performance period from January 1, 2022 through December 31, 2024 and performance conditions that are consistent with the PSAs granted in prior years. The Company recognized stock-based compensation expense of $4.6 million and $6.1 million for the three months ended March 31, 2022 and 2021, respectively. Unrecognized compensation expense of approximately $19.7 million as of March 31, 2022 related to unsettled RSUs is expected to be recognized over a weighted-average period of 2.1 2.0 1.6

Business Combination

Business Combination	3 Months Ended
	Mar. 31, 2022
Business Combinations [Abstract]
Business Combination	NOTE 14 – BUSINESS COMBINATION On December 31, 2021, the Company acquired Creative Systems and Consulting, a premier provider of IT modernization and digital transformation solutions to federal agencies, for a cash purchase price of approximately $159.5 million, subject to working capital adjustments. The Company initially recorded working capital of $4.5 million and recognized fair value of the assets acquired and liabilities assumed and allocated $126.1 million to goodwill and $28.9 million to intangible assets. Intangible assets consist of $24.5 million in customer relationships, $3.7 million related to developed technology, $0.6 million related to trade names and trademarks, and $0.1 million related to non-compete agreements. The allocation of the total purchase price to the tangible and intangible assets and liabilities of Creative Systems and Consulting was based on management’s preliminary estimate of fair value, based on the best available information as of December 31, 2021 when the purchase price allocation was determined. The Company expects to complete the purchase accounting during the 2022 fiscal year as it finalizes the determination of both working capital, as well as its estimates of future cash flows underlying the valuation of customer-related intangible assets. The pro-forma impact of the acquisition is not material to the Company’s results of operations. A prior acquisition’s purchase agreement included additional consideration in the form of warranty and indemnity hold back payments. As of March 31, 2022, one payment remains outstanding

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 15 – EARNINGS PER SHARE The Company’s earnings per share (“EPS”) is computed by dividing reported net income by the weighted-average number of shares outstanding. Diluted EPS considers the potential dilution that could occur if common stock equivalents of stock options, RSUs, and PSAs were exercised or converted into stock. PSAs are included in the computation of diluted shares only to the extent that the underlying performance conditions (i) are satisfied as of the end of the reporting period or (ii) would be considered satisfied if the end of the reporting period were the end of the related performance period and the result would be dilutive under the treasury stock method. As of March 31, 2022, the PSAs granted during the year ended December 31, 2020 met the related performance conditions for the initial performance period and were included in the calculation of diluted EPS. However, the PSAs granted during the year ended December 31, 2021 and during the three months ended March 31, 2022 have not yet completed their initial two-year The dilutive effect of stock options, RSUs, and PSAs for each period reported is summarized below: Three Months Ended March 31, 2022 2021 Net Income $ 17,862 $ 18,351 Weighted-average number of basic shares outstanding during the period 18,795 18,885 Dilutive effect of stock options, RSUs, and performance shares 217 233 Weighted-average number of diluted shares outstanding during the period 19,012 19,118 Basic earnings per share $ 0.95 $ 0.97 Diluted earnings per share $ 0.94 $ 0.96

Share Repurchase Program

Share Repurchase Program	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Share Repurchase Program	NOTE 16 – SHARE REPURCHASE PROGRAM In September 2017, the board approved a share repurchase program that allows for share repurchases in the aggregate up to $100.0 million under approved share repurchase plans pursuant to Rules 10b5-1 and 10b-18 under the Securities Exchange Act of 1934. In November 2021, the board amended and increased the limit under the previous authorization of $100.0 million to $200.0 million. The Credit Facility permits unlimited share repurchases, provided the Company’s Leverage Ratio, prior to and after giving effect to such repurchases, is not greater than 3.50 to 1.00. Purchases under this program may be made from time to time at prevailing market prices in open market purchases or in privately negotiated transactions pursuant to Rule 10b-18 under the Exchange Act and in accordance with applicable insider trading and other securities laws and regulations. The purchases are funded from existing cash balances and/or borrowings, and the repurchased shares are held in treasury and used for general corporate purposes. The timing and extent to which the Company repurchases its shares will depend on market conditions and other corporate considerations at the Company’s sole discretion. During the fourth quarter of 2021, the board approved an updated Rule 10b5-1 plan element of the share repurchase program to repurchase a maximum of 165,000 shares, or a total of $20.0 million, under the current program starting on December 20, 2021 and ending no later than June 30, 2022. Under this approved plan, the Company repurchased 140,200 shares at an average price of $98.55 per share between January 1, 2022 and February 2, 2022. The repurchase plan was completed in the first quarter of 2022 with a total of 165,000 shares repurchased from December 20, 2021 to February 2, 2022 for a total of $16.3 million. The Company also used $3.1 million to repurchase an additional 36,175 shares in the open market during the first quarter of 2022 at an average price of $87.00 per share. For the three months ended March 31, 2022 and 2021, the Company used $17.0 million to repurchase 176,375 shares and $12.8 million to repurchase 151,200 shares, respectively, under the repurchase program. As of March 31, 2022, $111.9 million remained available for share repurchases under the repurchase program.

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value	NOTE 17 – FAIR VALUE Financial instruments measured at fair value on a recurring basis and their location within the accompanying consolidated balance sheets are as follows: March 31, 2022 (in thousands) Level 1 Level 2 Level 3 Total Location on Balance Sheet Assets: Interest rate swaps - long-term portion $ — $ 3,005 $ — $ 3,005 Other assets Deferred compensation investments in cash surrender life insurance — 19,026 — 19,026 Other assets Total $ — $ 22,031 $ — $ 22,031 Liabilities: Forward contract agreements $ — $ 182 $ — $ 182 Accrued expenses and other current liabilities Deferred compensation plan liabilities — 19,748 — 19,748 Other long-term liabilities Interest rate swaps - current portion — 508 — 508 Accrued expenses and other current liabilities Total $ — $ 20,438 $ — $ 20,438 December 31, 2021 (in thousands) Level 1 Level 2 Level 3 Total Location on Balance Sheet Assets: Forward contract agreements $ — $ 267 $ — $ 267 Prepaid expenses and other assets Deferred compensation investments in cash surrender life insurance — 20,159 — 20,159 Other assets Total $ — $ 20,426 $ — $ 20,426 Liabilities: Deferred compensation plan liabilities $ — $ 20,129 $ — $ 20,129 Other long-term liabilities Interest rate swaps - current portion — 3,026 — 3,026 Accrued expenses and other current liabilities Interest rate swaps - long-term portion — 888 — 888 Other long-term liabilities Total $ — $ 24,043 $ — $ 24,043

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	NOTE 18 – Dividend On May 4, 2022, the board approved a $0.14 per share cash dividend. The dividend will be paid on July 14, 2022 to shareholders of record as of the close of business on June 10, 2022.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2022
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 19 – Litigation and Claims The Company is involved in various legal matters and proceedings arising in the ordinary course of business. While these matters and proceedings cause it to incur costs, including, but not limited to, attorneys’ fees, the Company currently believes that any ultimate liability arising out of these matters and proceedings will not have a material adverse effect on its financial position, results of operations, or cash flows. Road Home Contract On June 10, 2016, the Office of Community Development (the “OCD”) of the State of Louisiana filed a written administrative demand with the Louisiana Commissioner of Administration against ICF Emergency Management Services, L.L.C. (“ICF Emergency”), a subsidiary of the Company, in connection with ICF Emergency’s administration of the Road Home Program (“Program”). The Program contract was a three-year The Program was primarily intended to help homeowners and landlords of small rental properties affected by Hurricanes Rita and Katrina. In its administrative demand, the OCD sought approximately $200.8 million in alleged overpayments to the Program’s grant recipients, and separately supplemented the amount of recovery it sought in total to approximately $220.2 million. The State of Louisiana, through the Division of Administration, also filed suit in Louisiana state court on June 10, 2016. The State of Louisiana broadly alleges and sought recoupment for the same claim made in the administrative proceeding submission before the Louisiana Commissioner of Administration. On September 21, 2016, the Commissioner of the Division of Administration notified OCD and the Company of his decision to defer jurisdiction of the administrative demand filed by the OCD. In so doing, the Commissioner declined to reach a decision on the merits, stated that his deferral would not be deemed to grant or deny any portion of the OCD’s claim, and authorized the parties to proceed on the matter in the previously filed judicial proceeding. The Company continues to believe that this claim has no merit, intends to vigorously defend its position, and has therefore not recorded a liability as of March 31, 2022. Executive Chair Retirement On November 15, 2020, the Company’s former Executive Chair gave notice of his retirement effective December 31, 2020. In connection with his retirement, the former Executive Chair is entitled to receive compensation and benefits as provided in his employment agreement for a termination of employment on the basis of “good reason.” As of March 31, 2022, there were PSAs totaling 17,287 shares which were originally granted during 2020 to be satisfied through the normal course of the PSA equity award plan (see Note 13—Accounting for Stock-Based Compensation) and subject to adjustment from rTSR performance.

Basis of Presentation and Nat_2

Basis of Presentation and Nature of Operations (Policies)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements include the accounts of ICF International, Inc. (“ICFI”) and its principal subsidiary, ICF Consulting Group, Inc. (“Consulting,” and together with ICFI, the “Company”), and have been prepared in accordance with United States (“U.S.”) generally accepted accounting principles (“U.S. GAAP”). Consulting is a wholly owned subsidiary of ICFI. ICFI is a holding company with no operations or assets other than its investment in the common stock of Consulting. All other subsidiaries of the Company are wholly owned by Consulting. All significant intercompany transactions and balances have been eliminated.
Use of Estimates	Use of Estimates The preparation of consolidated 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 liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. Areas of the consolidated financial statements where estimates may have the most significant effect include contractual and regulatory reserves, valuation and lives of tangible and intangible assets, contingent consideration related to business acquisitions, impairment of goodwill and long-lived assets, accrued liabilities, revenue recognition and costs to complete fixed-price contracts, bonus and other incentive compensation, stock-based compensation, reserves for tax benefits and valuation allowances on deferred tax assets, provisions for income taxes, collectability of receivables, and loss accruals for litigation. Actual results experienced by the Company may differ from management's estimates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recent Accounting Pronouncements Not Yet Adopted Reference Rate Reform In March 2020, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The standard is intended to provide temporary optional expedients and exceptions to the U.S. GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the expected market transition from the London Interbank Offered Rate (“LIBOR”) and other interbank offered rates to alternative reference rates. The provisions of this ASU are elective and apply to all entities, subject to meeting certain criteria, that have debt or hedging contracts, among other contracts, that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The Company can elect to not apply certain modification accounting requirements to contracts affected by reference rate reform if certain criteria are met. Also, the Company can elect various optional expedients that would allow it to continue to apply hedge accounting for hedging relationships affected by reference rate reform if certain criteria are met. This guidance was effective beginning on March 12, 2020, and the Company may elect to apply the amendments prospectively through December 31, 2022. The Company is currently evaluating the impact of the transition from LIBOR to alternative reference interest rates for the current Credit Facility (see Note 7—Long-Term Debt) and the related interest rate hedges (see Note 9—Derivative Instruments and Hedging Activities) but does not expect a significant impact to its operating results, financial position, or cash flows.

Restricted Cash (Tables)

Restricted Cash (Tables)	3 Months Ended
	Mar. 31, 2022
Restricted Cash And Cash Equivalents Current [Abstract]
Reconciliation of Cash and Cash Equivalents, and Restricted Cash	The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheets for the periods presented to the total of cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows for the three months ended March 31, 2022 and 2021: March 31, 2022 March 31, 2021 Beginning Ending Beginning Ending Cash and cash equivalents $ 8,254 $ 7,392 $ 13,841 $ 8,592 Restricted cash - current (1) 12,179 1,681 68,146 42,231 Total of cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows $ 20,433 $ 9,073 $ 81,987 $ 50,823 (1) Under a contract with a customer that commenced in the fourth quarter of fiscal year 2020, the Company received advance payments to be used to pay providers of services to the customer, a separate third-party. The advanced payments are treated as restricted cash - current as the Company is required under the contract to distribute the advanced funds to the third-party providers of services or return the advanced funds to the customer. Because the Company receives the advance payments from the customer, which must be refunded to the customer or remitted to a third party, the cash receipts are treated as borrowings rather than receipts for the provision of goods or services. Therefore, these cash receipts are presented in the consolidated statements of cash flows as financing cash inflows, “Receipt of restricted contract funds” with the subsequent payments classified as financing cash outflows, “Payment of restricted contract funds.” See Note 6 – Accrued Expenses and Other Current Liabilities for the corresponding liability.

Contract Receivables, Net (Tabl

Contract Receivables, Net (Tables)	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Summary of Contract Receivables, Net	Contract receivables, net consisted of the following: March 31, 2022 December 31, 2021 Billed and billable $ 211,827 $ 245,425 Allowance for expected credit losses (6,000 ) (7,741 ) Contract receivables, net $ 205,827 $ 237,684

Goodwill (Tables)

Goodwill (Tables)	3 Months Ended
	Mar. 31, 2022
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill during the three-months period ended March 31, 2022 were as follows: Balance as of December 31, 2021 $ 1,046,760 Measurement period adjustments - ESAC acquisition 87 Measurement period adjustments - Creative Systems and Consulting acquisition (1 ) Effect of foreign currency translation (1,343 ) Balance as of March 31, 2022 $ 1,045,503

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Summary of Lease Cost	The Company’s lease cost is recognized on a straight-line basis over the lease term. Lease cost consists of the following: Three Months Ended March 31, 2022 March 31, 2021 Operating lease cost $ 9,502 $ 8,793 Short-term lease cost 133 131 Variable lease cost 20 10 Sublease income (10 ) — Total lease cost $ 9,645 $ 8,934
Summary of Future Minimum Lease Payments Under Non-Cancellable Leases	Future minimum lease payments under non-cancellable leases as of March 31, 2022 were as follows: March 31, 2023 $ 33,057 March 31, 2024 20,984 March 31, 2025 23,628 March 31, 2026 21,643 March 31, 2027 20,369 Thereafter 152,425 Total future minimum lease payments 272,106 Less: Interest (51,719 ) Total operating lease liabilities $ 220,387 Operating lease liabilities - current $ 30,530 Operating lease liabilities - non-current 189,857 Total operating lease liabilities $ 220,387
Summary of Other Information Related to Operating Leases	Other information related to operating leases is as follows: March 31, 2022 March 31, 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 10,110 $ 4,130 Right-of-use assets obtained in exchange for operating lease liabilities $ 2,952 $ 142 Weighted-average remaining lease term - operating leases 11.5 5.8 Weighted-average discount rate - operating leases 3.2 % 3.4 %

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2022
Payables And Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	At March 31, 2022 and December 31, 2021, accrued expenses and other current liabilities consisted of the following: March 31, 2022 December 31, 2021 Deposits $ 21,162 $ 21,088 Restricted contract funds 1,668 12,165 Accrued IT and software licensing costs 1,231 1,702 Accrued taxes and insurance premiums 3,632 5,267 Accrued facilities rental and lease exit costs 1,027 1,291 Accrued interest 171 212 Accrued professional services 2,363 3,068 Accrued dividends 2,627 2,643 Contingent and contractual liabilities from acquisitions 1,212 1,245 Interest rate swap liability - current 508 3,026 Forward contract agreements liability - current 182 — Other accrued expenses and current liabilities 5,605 9,789 Total accrued expenses and other current liabilities $ 41,388 $ 61,496

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Schedule of Long-term Debt	At March 31, 2022 and December 31, 2021, debt consisted of: March 31, 2022 December 31, 2021 Average Interest Rate Outstanding Balance Average Interest Rate Outstanding Balance Term Loan $ 180,000 $ 182,500 Revolving Credit 281,583 241,055 Total before debt issuance costs 1.40% 461,583 1.65% 423,555 Unamortized debt issuance costs (1,807 ) (1,950 ) $ 459,776 $ 421,605 Current portion of long-term debt $ 10,000 $ 10,000 Long-term debt - non-current 449,776 411,605 $ 459,776 $ 421,605
Schedule of Future Scheduled Repayments of Debt Principal	Future scheduled repayments of debt principal are as follows: Payments due by Term Loan Revolving Credit Total March 31, 2023 $ 10,000 $ — $ 10,000 March 30, 2024 15,000 — 15,000 March 3, 2025 (Maturity) 155,000 281,583 436,583 Total $ 180,000 $ 281,583 $ 461,583

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2022
Revenue From Contract With Customer [Abstract]
Disaggregation of Revenue	Disaggregation of Revenue Changes in the three months ended March 31, 2022 compared to the three months ended March 31, 2021 were driven primarily by an increase of $39.4 million and $6.2 million from U.S. federal government’s health, education, and social programs and energy, environment, and infrastructure client markets, respectively, $7.4 million and $0.5 million from U.S. state and local government’s health, education, and social programs and energy, environment, and infrastructure client markets, respectively, and $1.7 million from international government’s health, education, and social programs client market, offset by decreases of $11.1 million and $0.6 million from international government’s energy, environment, and infrastructure and safety and security client markets, respectively, $3.5 million, $2.6 million, and $1.2 million from commercial consumer and financial, energy, environment, and infrastructure, and health, education, and social programs client markets, respectively, and $1.2 million from U.S. federal government safety and security client market. Three Months Ended March 31, 2022 2021 Dollars Percent Dollars Percent Client Markets: Energy, environment, and infrastructure $ 156,644 38 % $ 163,582 43 % Health, education, and social programs 205,532 50 % 158,268 42 % Safety and security 29,400 7 % 31,198 8 % Consumer and financial 21,892 5 % 25,430 7 % Total $ 413,468 100 % $ 378,478 100 % Three Months Ended March 31, 2022 2021 Dollars Percent Dollars Percent Client Type: U.S. federal government $ 220,343 53 % $ 175,985 46 % U.S. state and local government 64,833 16 % 56,878 15 % International government 26,720 6 % 36,746 10 % Total Government 311,896 75 % 269,609 71 % Commercial 101,572 25 % 108,869 29 % Total $ 413,468 100 % $ 378,478 100 % Three Months Ended March 31, 2022 2021 Dollars Percent Dollars Percent Contract Mix: Time-and-materials $ 165,084 40 % $ 159,836 42 % Fixed price 183,896 44 % 147,469 39 % Cost-based 64,488 16 % 71,173 19 % Total $ 413,468 100 % $ 378,478 100 %
Schedule of Contract Balances and Changes in Contract Balances	Contract Balances: Contract assets consist primarily of unbilled amounts resulting from long-term contracts when revenue recognized exceeds the amount billed often due to billing schedule timing. Contract liabilities result from advance payments received on a contract or from billings in excess of revenue recognized on long-term contracts due to billing schedule timing. The following table summarizes the contract balances as of March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 $ Change % Change Contract assets $ 189,147 $ 137,867 $ 51,280 37.2 % Contract liabilities (31,491 ) (39,665 ) 8,174 (20.6 %) Net contract assets (liabilities) $ 157,656 $ 98,202 $ 59,454 60.5 %

Derivative instruments and He_2

Derivative instruments and Hedges Activities (Tables)	3 Months Ended
	Mar. 31, 2022
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Interest Rate Swaps Derivatives Designated as Cash Flow Hedges	A summary of interest rate swap derivatives designated as cash flow hedges as of March 31, 2022 are as follows: Dates of Effected Cash Flows Date of Interest Rate Swap Agreement Notional Amount ($million) Paid Fixed Interest Rate% Beginning Ending September 30, 2016 (1) $ 100.0 - January 31, 2018 January 31, 2023 August 31, 2017 $ 25.0 1.8475% August 31, 2018 August 31, 2023 August 8, 2018 $ 50.0 2.8540% August 31, 2018 August 31, 2023 August 8, 2018 $ 25.0 2.8510% August 31, 2018 August 31, 2023 February 20, 2020 $ 100.0 1.2940% February 28, 2020 February 28, 2025 (1) On December 1, 2016, the Company sold the interest rate hedge agreement. The fair value of the interest rate hedge, as of the date of the sale, was recorded in other comprehensive income, net of tax. The gain from the sale will be recognized into earnings when earnings are impacted by the cash flows of the previously hedged variable interest rate.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2022
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Components of Accumulated Other Comprehensive Loss	NOTE 11 – ACCUMULATED OTHER COMPREHENSIVE LOSS Accumulated other comprehensive loss as of March 31, 2022 and 2021 included the following: Three Months Ended March 31, 2022 Foreign Currency Translation Adjustments Gain on Sale of Interest Rate Hedge Agreement (1) Change in Fair Value of Interest Rate Hedge Agreements (2) Total Accumulated other comprehensive (loss) income at December 31, 2021 $ (8,759 ) $ 569 $ (2,845 ) $ (11,035 ) Current period other comprehensive (loss) income: Other comprehensive (loss) income before reclassifications (2,304 ) — 5,509 3,205 Amounts reclassified from accumulated other comprehensive (loss) income (3) — (180 ) 902 722 Effect of taxes (4) 363 48 (1,679 ) (1,268 ) Total current period other comprehensive (loss) income (1,941 ) (132 ) 4,732 2,659 Accumulated other comprehensive (loss) income at March 31, 2022 $ (10,700 ) $ 437 $ 1,887 $ (8,376 ) Three Months Ended March 31, 2021 Foreign Currency Translation Adjustments Gain on Sale of Interest Rate Hedge Agreement (1) Change in Fair Value of Interest Rate Hedge Agreement (2) Total Accumulated other comprehensive (loss) income at December 31, 2020 $ (7,210 ) $ 1,096 $ (7,992 ) $ (14,106 ) Current period other comprehensive income (loss): Other comprehensive income before reclassifications 968 — 1,882 2,850 Amounts reclassified from accumulated other comprehensive (loss) income (3) — (180 ) 907 727 Effect of taxes (4) (104 ) 49 (742 ) (797 ) Total current period other comprehensive income (loss) 864 (131 ) 2,047 2,780 Accumulated other comprehensive (loss) income at March 31, 2021 $ (6,346 ) $ 965 $ (5,945 ) $ (11,326 ) (1) Represents the unamortized value of an interest rate hedge agreement, designated as a cash flow hedge, which was sold on December 1, 2016. The fair value of the interest rate hedge agreement, at the date of the sale, was recorded in other comprehensive income, net of tax, and is being reclassified to interest expense when earnings are impacted by the hedged items and as interest payments are made on the Credit Facility from January 31, 2018 to January 31, 2023 (see Note 9—Derivative Instruments and Hedging Activities). (2) Represents the change in fair value of interest rate hedge agreements designated as a cash flow hedges. The fair value of the interest rate hedge agreements was recorded in other comprehensive income, net of tax, and will be reclassified to earnings when earnings are impacted by the hedged items, as interest payments are made on the Credit Facility from August 31, 2018 to February 28, 2025 (3) The Company expects to reclassify $0.6 million net gains related to the Gain on Sale of Interest Rate Hedge Agreement and $0.5 million net losses related to the Change in Fair Value of Interest Rate Hedge Agreement from accumulated other comprehensive loss into earnings during the next 12 months. ( 4 ) The Company’s effective tax rate for the three months ended March 31, 2022 and 2021 was 27.5% and 26.7%, respectively.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2022
Stockholders Equity Note [Abstract]
Schedule of Changes in Stockholders' Equity	Changes in stockholders’ equity for the three months ended March 31, 2022 and 2021 are as follows: Three Months Ended March 31, 2022 Common Stock Additional Paid-in Retained Treasury Stock Accumulated Other Comprehensive Shares Amount Capital Earnings Shares Amount Loss Total Balance at December 31, 2021 18,876 $ 23 $ 384,984 $ 649,298 4,659 $ (219,800 ) $ (11,035 ) $ 803,470 Net income — — — 17,862 — — — 17,862 Other comprehensive income — — — — — — 2,659 2,659 Equity compensation — — 3,563 — — — — 3,563 Exercise of stock options — — 92 — — — — 92 Issuance of shares pursuant to vesting of restricted stock units 144 — — — — — — — Net payments for stock issuances and buybacks (227 ) — — — 227 (21,716 ) — (21,716 ) Dividends declared — — — (2,628 ) — — — (2,628 ) Balance at March 31, 2022 18,793 $ 23 $ 388,639 $ 664,532 4,886 $ (241,516 ) $ (8,376 ) $ 803,302 Three Months Ended March 31, 2021 Common Stock Additional Paid-in Retained Treasury Stock Accumulated Other Comprehensive Shares Amount Capital Earnings Shares Amount Loss Total Balance at December 31, 2020 18,910 $ 23 $ 369,058 $ 588,731 4,395 $ (196,745 ) $ (14,106 ) $ 746,961 Net income — — — 18,351 — — — 18,351 Other comprehensive loss — — — — — — 2,780 2,780 Equity compensation — — 3,275 — — — — 3,275 Exercise of stock options 3 — 87 — — — — 87 Issuance of shares pursuant to vesting of restricted stock units 153 — — — — — — — Net payments for stock issuances and buybacks (207 ) — — — 207 (17,580 ) — (17,580 ) Dividends declared — — — (2,641 ) — — — (2,641 ) Balance at March 31, 2021 18,859 $ 23 $ 372,420 $ 604,441 4,602 $ (214,325 ) $ (11,326 ) $ 751,233

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Schedule of Dilutive Effect of Stock Options RSUs and PSAs	The dilutive effect of stock options, RSUs, and PSAs for each period reported is summarized below: Three Months Ended March 31, 2022 2021 Net Income $ 17,862 $ 18,351 Weighted-average number of basic shares outstanding during the period 18,795 18,885 Dilutive effect of stock options, RSUs, and performance shares 217 233 Weighted-average number of diluted shares outstanding during the period 19,012 19,118 Basic earnings per share $ 0.95 $ 0.97 Diluted earnings per share $ 0.94 $ 0.96

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Schedule of Financial Instruments Measured at Fair Value on Recurring Basis	Financial instruments measured at fair value on a recurring basis and their location within the accompanying consolidated balance sheets are as follows: March 31, 2022 (in thousands) Level 1 Level 2 Level 3 Total Location on Balance Sheet Assets: Interest rate swaps - long-term portion $ — $ 3,005 $ — $ 3,005 Other assets Deferred compensation investments in cash surrender life insurance — 19,026 — 19,026 Other assets Total $ — $ 22,031 $ — $ 22,031 Liabilities: Forward contract agreements $ — $ 182 $ — $ 182 Accrued expenses and other current liabilities Deferred compensation plan liabilities — 19,748 — 19,748 Other long-term liabilities Interest rate swaps - current portion — 508 — 508 Accrued expenses and other current liabilities Total $ — $ 20,438 $ — $ 20,438 December 31, 2021 (in thousands) Level 1 Level 2 Level 3 Total Location on Balance Sheet Assets: Forward contract agreements $ — $ 267 $ — $ 267 Prepaid expenses and other assets Deferred compensation investments in cash surrender life insurance — 20,159 — 20,159 Other assets Total $ — $ 20,426 $ — $ 20,426 Liabilities: Deferred compensation plan liabilities $ — $ 20,129 $ — $ 20,129 Other long-term liabilities Interest rate swaps - current portion — 3,026 — 3,026 Accrued expenses and other current liabilities Interest rate swaps - long-term portion — 888 — 888 Other long-term liabilities Total $ — $ 24,043 $ — $ 24,043

Basis of Presentation and Nat_3

Basis of Presentation and Nature of Operations - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022OfficeSegment	Mar. 31, 2021Segment
Basis of Presentation and Nature of Operations [Line Items]
Number of operating segments | Segment	1
Number of reporting segments | Segment		1
Domestic | Minimum
Basis of Presentation and Nature of Operations [Line Items]
Number of offices | Office	50
International | Minimum
Basis of Presentation and Nature of Operations [Line Items]
Number of offices | Office	20

Restricted Cash - Reconciliatio

Restricted Cash - Reconciliation of Cash and Cash Equivalents, and Restricted Cash to the Total of Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents		$ 7,392	$ 8,254	$ 8,592	$ 13,841
Restricted cash - current	[1]	1,681	12,179	42,231	68,146
Total of cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows		$ 9,073	$ 20,433	$ 50,823	$ 81,987
[1]	Under a contract with a customer that commenced in the fourth quarter of fiscal year 2020, the Company received advance payments to be used to pay providers of services to the customer, a separate third-party. The advanced payments are treated as restricted cash - current as the Company is required under the contract to distribute the advanced funds to the third-party providers of services or return the advanced funds to the customer. Because the Company receives the advance payments from the customer, which must be refunded to the customer or remitted to a third party, the cash receipts are treated as borrowings rather than receipts for the provision of goods or services. Therefore, these cash receipts are presented in the consolidated statements of cash flows as financing cash inflows, “Receipt of restricted contract funds” with the subsequent payments classified as financing cash outflows, “Payment of restricted contract funds.” See Note 6 – Accrued Expenses and Other Current Liabilities for the corresponding liability.

Contract Receivables, Net - Sum

Contract Receivables, Net - Summary of Contract Receivables, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Receivables [Abstract]
Billed and billable	$ 211,827	$ 245,425
Allowance for expected credit losses	(6,000)	(7,741)
Contract receivables, net	$ 205,827	$ 237,684

Goodwill - Schedule of Changes

Goodwill - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Goodwill [Line Items]
Balance as of December 31, 2021	$ 1,046,760
Effect of foreign currency translation	(1,343)
Balance as of March 31, 2022	1,045,503
ESAC Acquisition
Goodwill [Line Items]
Measurement period adjustments	87
Creative Systems and Consulting Acquisition
Goodwill [Line Items]
Measurement period adjustments	$ (1)

Leases - Additional Information

Leases - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022
Lessee Lease Description [Line Items]
Operating leases, option to extend lease	The leases may include options to extend the lease periods for up to 5 years
Operating leases, existence of option to extend	true
Operating leases, option to terminate lease	options to terminate the leases within 1 year
Operating leases, existence of option to terminate	true
Operating leases, residual value guarantee description	The leases may include a residual value guarantee or a responsibility to return the property to its original state of use.
Operating leases, existence of residual value guarantee	true
Minimum
Lessee Lease Description [Line Items]
Operating leases, remaining lease term	1 year
Maximum
Lessee Lease Description [Line Items]
Operating leases, remaining lease term	17 years
Operating leases, extendable lease term	5 years
Operating leases, termination lease term	1 year

Leases - Summary of Lease Cost

Leases - Summary of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Operating lease cost	$ 9,502	$ 8,793
Short-term lease cost	133	131
Variable lease cost	20	10
Sublease income	(10)
Total lease cost	$ 9,645	$ 8,934

Leases - Summary of Future Mini

Leases - Summary of Future Minimum Lease Payments Under Non-Cancellable Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
March 31, 2023	$ 33,057
March 31, 2024	20,984
March 31, 2025	23,628
March 31, 2026	21,643
March 31, 2027	20,369
Thereafter	152,425
Total future minimum lease payments	272,106
Less: Interest	(51,719)
Total operating lease liabilities	220,387
Operating lease liabilities - current	30,530	$ 34,901
Operating lease liabilities - non-current	189,857	$ 191,805
Total operating lease liabilities	$ 220,387

Leases - Summary of Other Infor

Leases - Summary of Other Information Related to Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Operating cash flows from operating leases	$ 10,110	$ 4,130
Right-of-use assets obtained in exchange for operating lease liabilities	$ 2,952	$ 142
Weighted-average remaining lease term - operating leases	11 years 6 months	5 years 9 months 18 days
Weighted-average discount rate - operating leases	3.20%	3.40%

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Payables And Accruals [Abstract]
Deposits	$ 21,162	$ 21,088
Restricted contract funds	1,668	12,165
Accrued IT and software licensing costs	1,231	1,702
Accrued taxes and insurance premiums	3,632	5,267
Accrued facilities rental and lease exit costs	1,027	1,291
Accrued interest	171	212
Accrued professional services	2,363	3,068
Accrued dividends	2,627	2,643
Contingent and contractual liabilities from acquisitions	1,212	1,245
Interest rate swap liability - current	508	3,026
Forward contract agreements liability - current	182
Other accrued expenses and current liabilities	5,605	9,789
Total accrued expenses and other current liabilities	$ 41,388	$ 61,496

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long Term Debt (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Average Interest Rate	1.40%	1.65%
Outstanding Balance before debt issuance costs	$ 461,583	$ 423,555
Unamortized debt issuance costs	(1,807)	(1,950)
Long-term Debt	459,776	421,605
Current portion of long-term debt	10,000	10,000
Long-term debt	449,776	411,605
Term Loan
Debt Instrument [Line Items]
Outstanding Balance before debt issuance costs	180,000	182,500
Revolving Credit
Debt Instrument [Line Items]
Outstanding Balance before debt issuance costs	$ 281,583	$ 241,055

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details)	Mar. 03, 2020USD ($)Bank	Mar. 31, 2022USD ($)	Dec. 31, 2021USD ($)
Debt Instrument [Line Items]
Credit facility group, number of commercial banks | Bank	10
Line of credit facility, expiration date		Mar. 3, 2025
Line of credit facility, swing line commitment amount	$ 25,000,000
Line of credit facility, maximum borrowing capacity	60,000,000
Line of credit facility, additional revolving credit commitments under existing loan facility	$ 300,000,000
Line of credit facility, interest coverage ratio covenant	300.00%
Line of credit facility, leverage ratio covenant	400.00%
Line of credit facility, leverage ratio covenant step-up pursuant to permitted acquisitions	425.00%
Long-term debt outstanding exclusive of unamortized debt issuance costs		$ 461,583,000	$ 423,555,000
Outstanding Balance before debt issuance costs		461,583,000	423,555,000
Unamortized debt issuance costs		$ 1,807,000	1,950,000
Number of letters of credit, outstanding		9
Letters of credit outstanding, amount		$ 3,300,000
Line of credit facility, current borrowing capacity		250,400,000
Term Loan
Debt Instrument [Line Items]
Long-term debt outstanding exclusive of unamortized debt issuance costs		180,000,000	182,500,000
Outstanding Balance before debt issuance costs		180,000,000	$ 182,500,000
Federal Funds Open Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.50%
Revolving Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 600,000,000	600,000,000
Unused borrowing capacity amount		$ 315,100,000
Term Loan
Debt Instrument [Line Items]
Debt instrument, principal amount	200,000,000
Line of credit facility	200,000,000
Swing Line Loans
Debt Instrument [Line Items]
Line of credit facility	75,000,000
Maximum
Debt Instrument [Line Items]
Line of credit facility, swing line commitment amount	$ 75,000,000
Line of credit facility, commitment fee unused capacity	0.25%
Maximum | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Minimum
Debt Instrument [Line Items]
Line of credit facility, commitment fee unused capacity	0.13%
Minimum | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.00%

Long Term Debt - Schedule of Fu

Long Term Debt - Schedule of Future Scheduled Repayments of Term Loan Principal (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
March 31, 2023	$ 10,000
March 30, 2024	15,000
March 3, 2025 (Maturity)	436,583
Total	461,583	$ 423,555
Term Loan
Debt Instrument [Line Items]
March 31, 2023	10,000
March 30, 2024	15,000
March 3, 2025 (Maturity)	155,000
Total	180,000	182,500
Revolving Credit
Debt Instrument [Line Items]
March 3, 2025 (Maturity)	281,583
Total	$ 281,583	$ 241,055

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Revenue From Contract With Customer [Line Items]
Net contract assets (liabilities)	$ 59,454
Revenue related to contract liabilities	20,900	$ 15,100
U.S. Federal Government | Health, Education and Social Programs
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	39,400
U.S. Federal Government | Energy, Environmental and Infrastructure
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	6,200
U.S. Federal Government | Safety and Security
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	(1,200)
U.S. State and Local Government | Health, Education and Social Programs
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	7,400
U.S. State and Local Government | Energy, Environmental and Infrastructure
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	500
International Government | Health, Education and Social Programs
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	1,700
International Government | Energy, Environmental and Infrastructure
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	(11,100)
International Government | Safety and Security
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	(600)
Commercial | Health, Education and Social Programs
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	(1,200)
Commercial | Energy, Environmental and Infrastructure
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	(2,600)
Commercial | Consumer And Financial Services
Revenue From Contract With Customer [Line Items]
Increase (decrease) in revenue	$ (3,500)

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenue from clients	$ 413,468	$ 378,478
Time-and-Materials
Disaggregation Of Revenue [Line Items]
Revenue from clients	165,084	159,836
Fixed-Price
Disaggregation Of Revenue [Line Items]
Revenue from clients	183,896	147,469
Cost-Based
Disaggregation Of Revenue [Line Items]
Revenue from clients	64,488	71,173
U.S. Federal Government
Disaggregation Of Revenue [Line Items]
Revenue from clients	220,343	175,985
U.S. State and Local Government
Disaggregation Of Revenue [Line Items]
Revenue from clients	64,833	56,878
International Government
Disaggregation Of Revenue [Line Items]
Revenue from clients	26,720	36,746
Total Government
Disaggregation Of Revenue [Line Items]
Revenue from clients	311,896	269,609
Commercial
Disaggregation Of Revenue [Line Items]
Revenue from clients	$ 101,572	$ 108,869
Customer Concentration Risk | Revenue from Contract with Customer
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	100.00%	100.00%
Customer Concentration Risk | Revenue from Contract with Customer | Time-and-Materials
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	40.00%	42.00%
Customer Concentration Risk | Revenue from Contract with Customer | Fixed-Price
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	44.00%	39.00%
Customer Concentration Risk | Revenue from Contract with Customer | Cost-Based
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	16.00%	19.00%
Customer Concentration Risk | Revenue from Contract with Customer | U.S. Federal Government
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	53.00%	46.00%
Customer Concentration Risk | Revenue from Contract with Customer | U.S. State and Local Government
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	16.00%	15.00%
Customer Concentration Risk | Revenue from Contract with Customer | International Government
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	6.00%	10.00%
Customer Concentration Risk | Revenue from Contract with Customer | Total Government
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	75.00%	71.00%
Customer Concentration Risk | Revenue from Contract with Customer | Commercial
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	25.00%	29.00%
Energy, Environmental and Infrastructure
Disaggregation Of Revenue [Line Items]
Revenue from clients	$ 156,644	$ 163,582
Energy, Environmental and Infrastructure | Customer Concentration Risk | Revenue from Contract with Customer
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	38.00%	43.00%
Health, Education and Social Programs
Disaggregation Of Revenue [Line Items]
Revenue from clients	$ 205,532	$ 158,268
Health, Education and Social Programs | Customer Concentration Risk | Revenue from Contract with Customer
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	50.00%	42.00%
Safety and Security
Disaggregation Of Revenue [Line Items]
Revenue from clients	$ 29,400	$ 31,198
Safety and Security | Customer Concentration Risk | Revenue from Contract with Customer
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	7.00%	8.00%
Consumer and Financial
Disaggregation Of Revenue [Line Items]
Revenue from clients	$ 21,892	$ 25,430
Consumer and Financial | Customer Concentration Risk | Revenue from Contract with Customer
Disaggregation Of Revenue [Line Items]
Revenue from clients, Percent	5.00%	7.00%

Revenue Recognition - Schedule

Revenue Recognition - Schedule of Changes in Contract Balances Due to Adoption of New Accounting Standards (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Revenue From Contract With Customer [Abstract]
Contract assets	$ 189,147	$ 137,867
Contract liabilities	(31,491)	(39,665)
Net contract assets (liabilities)	157,656	$ 98,202
Change in contract assets	51,280
Change in contract liabilities	8,174
Change in net contract assets (liabilities)	$ 59,454
Percentage of change in contract assets	37.20%
Percentage of change in contract liabilities	(20.60%)
Percentage of change in net contract assets (liabilities)	60.50%

Revenue Recognition - Additio_2

Revenue Recognition - Additional Information (Detail 1) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-04-01 $ in Billions	Mar. 31, 2022USD ($)
Revenue From Contract With Customer [Line Items]
Unfulfilled performance obligation	$ 1.1
Minimum
Revenue From Contract With Customer [Line Items]
Expected period to satisfy performance obligations	1 year
Maximum
Revenue From Contract With Customer [Line Items]
Expected period to satisfy performance obligations	2 years

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Summary of Interest Rate Swaps Derivatives Designated as Cash Flow Hedges (Details) - Cash Flow Hedging - Designated as Hedging Instrument - USD ($) $ in Millions	Feb. 20, 2020	Aug. 08, 2018	Aug. 31, 2017	Sep. 30, 2016	[1]
Interest Rate Swap
Derivative [Line Items]
Notional Amount	$ 100	$ 50	$ 25	$ 100
Paid Fixed Interest Rate%	1.294%	2.854%	1.8475%
Beginning Dates of Effected Cash Flows	Feb. 28, 2020	Aug. 31, 2018	Aug. 31, 2018	Jan. 31, 2018
Ending Dates of Effected Cash Flows	Feb. 28, 2025	Aug. 31, 2023	Aug. 31, 2023	Jan. 31, 2023
Interest Rate Swap 2.8510% Paid Rate
Derivative [Line Items]
Notional Amount		$ 25
Paid Fixed Interest Rate%		2.851%
Beginning Dates of Effected Cash Flows		Aug. 31, 2018
Ending Dates of Effected Cash Flows		Aug. 31, 2023
[1]	On December 1, 2016, the Company sold the interest rate hedge agreement. The fair value of the interest rate hedge, as of the date of the sale, was recorded in other comprehensive income, net of tax. The gain from the sale will be recognized into earnings when earnings are impacted by the cash flows of the previously hedged variable interest rate.

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Sep. 30, 2021	Mar. 31, 2021
Income Taxes [Line Items]
Effective income tax rate reconciliation, percent	27.50%		26.70%
Unrecognized tax benefits	$ 500,000		$ 700,000
Unrecognized tax benefits, income tax penalties and interest accrued	$ 0		$ 0
COVID-19 Pandemic | U.S. Federal Government
Income Taxes [Line Items]
Percentage of deferred employer portion of social security tax repayable		50.00%
COVID-19 Pandemic | CARES Act | U.S. Federal Government
Income Taxes [Line Items]
Exercised option to defer employer portion of social security tax payment description	Pursuant to the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act, the Company exercised the option to defer payment of the employer portion of the Social Security tax, with 50% to be repaid by December 31, 2021 and the remainder by December 31, 2022.
Percentage of deferred employer portion of social security tax repayable	50.00%
Employer portion of social security tax repayable date	Dec. 31, 2021
Employer portion of social security tax repayable remainder date	Dec. 31, 2022
Employer portion of social security tax deferred	$ 20,900,000
Internal Revenue Service (IRS) | Latest Tax Year
Income Taxes [Line Items]
Open tax year	2020
Internal Revenue Service (IRS) | Earliest Tax Year
Income Taxes [Line Items]
Open tax year	2018
State Local and Foreign Jurisdictions | Latest Tax Year
Income Taxes [Line Items]
Open tax year	2020
State Local and Foreign Jurisdictions | Earliest Tax Year
Income Taxes [Line Items]
Open tax year	2017

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Balance		$ 803,470	$ 746,961
Current period other comprehensive (loss) income:
Total current period other comprehensive (loss) income		2,659	2,780
Balance		803,302	751,233
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance		(8,759)	(7,210)
Current period other comprehensive (loss) income:
Other comprehensive (loss) income before reclassifications		(2,304)	968
Effect of taxes	[1]	363	(104)
Total current period other comprehensive (loss) income		(1,941)	864
Balance		(10,700)	(6,346)
Gain on Sale of Interest Rate Hedge Agreement
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	[2]	569	1,096
Current period other comprehensive (loss) income:
Amounts reclassified from accumulated other comprehensive (loss) income	[2],[3]	(180)	(180)
Effect of taxes	[1],[2]	48	49
Total current period other comprehensive (loss) income	[2]	(132)	(131)
Balance	[2]	437	965
Change in Fair Value of Interest Rate Hedge Agreements
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	[4]	(2,845)	(7,992)
Current period other comprehensive (loss) income:
Other comprehensive (loss) income before reclassifications	[4]	5,509	1,882
Amounts reclassified from accumulated other comprehensive (loss) income	[3],[4]	902	907
Effect of taxes	[1],[4]	(1,679)	(742)
Total current period other comprehensive (loss) income	[4]	4,732	2,047
Balance	[4]	1,887	(5,945)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance		(11,035)	(14,106)
Current period other comprehensive (loss) income:
Other comprehensive (loss) income before reclassifications		3,205	2,850
Amounts reclassified from accumulated other comprehensive (loss) income	[3]	722	727
Effect of taxes	[1]	(1,268)	(797)
Total current period other comprehensive (loss) income		2,659	2,780
Balance		$ (8,376)	$ (11,326)
[1]	The Company’s effective tax rate for the three months ended March 31, 2022 and 2021 was 27.5% and 26.7%, respectively
[2]	Represents the unamortized value of an interest rate hedge agreement, designated as a cash flow hedge, which was sold on December 1, 2016. The fair value of the interest rate hedge agreement, at the date of the sale, was recorded in other comprehensive income, net of tax, and is being reclassified to interest expense when earnings are impacted by the hedged items and as interest payments are made on the Credit Facility from January 31, 2018 to January 31, 2023 (see Note 9—Derivative Instruments and Hedging Activities).
[3]	The Company expects to reclassify $0.6 million net gains related to the Gain on Sale of Interest Rate Hedge Agreement and $0.5 million net losses related to the Change in Fair Value of Interest Rate Hedge Agreement from accumulated other comprehensive loss into earnings during the next 12 months
[4]	Represents the change in fair value of interest rate hedge agreements designated as a cash flow hedges. The fair value of the interest rate hedge agreements was recorded in other comprehensive income, net of tax, and will be reclassified to earnings when earnings are impacted by the hedged items, as interest payments are made on the Credit Facility from August 31, 2018 to February 28, 2025

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Expects to reclassify net gains from accumulated other comprehensive loss into earnings	$ 0.6
Expects to reclassify net losses related to change in fair value of interest rate hedge agreement from accumulated other comprehensive loss into earnings	$ 0.5
Effective tax rate	27.50%	26.70%

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Changes in Stockholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Balance	$ 803,470	$ 746,961
Net income	17,862	18,351
Other comprehensive income (loss)	2,659	2,780
Equity compensation	3,563	3,275
Exercise of stock options	92	87
Net payments for stock issuances and buybacks	(21,716)	(17,580)
Dividends declared	(2,628)	(2,641)
Balance	$ 803,302	$ 751,233
Common Stock
Balance (in shares)	18,876	18,910
Balance	$ 23	$ 23
Exercise of stock options (in shares)		3
Issuance of shares pursuant to vesting of restricted stock units (in shares)	144	153
Net payments for stock issuances and buybacks (in shares)	(227)	(207)
Balance (in shares)	18,793	18,859
Balance	$ 23	$ 23
Additional Paid-in Capital
Balance	384,984	369,058
Equity compensation	3,563	3,275
Exercise of stock options	92	87
Balance	388,639	372,420
Retained Earnings
Balance	649,298	588,731
Net income	17,862	18,351
Dividends declared	(2,628)	(2,641)
Balance	$ 664,532	$ 604,441
Treasury Stock
Balance (in shares)	4,659	4,395
Balance	$ (219,800)	$ (196,745)
Net payments for stock issuances and buybacks (in shares)	227	207
Net payments for stock issuances and buybacks	$ (21,716)	$ (17,580)
Balance (in shares)	4,886	4,602
Balance	$ (241,516)	$ (214,325)
Accumulated Other Comprehensive Loss
Balance	(11,035)	(14,106)
Other comprehensive income (loss)	2,659	2,780
Balance	$ (8,376)	$ (11,326)

Accounting for Stock-based Co_2

Accounting for Stock-based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 04, 2018	Mar. 31, 2022	Mar. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Allocated share-based compensation expense		$ 4.6	$ 6.1
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period		117,136
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value		$ 91.79
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized		$ 19.7
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition		2 years 1 month 6 days
Cash Settled RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period		56,718
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value		$ 91.79
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized		$ 9.3
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition		2 years
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period		35,705
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value		$ 93.97
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized		$ 6.3
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition		1 year 7 months 6 days
Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares grants	1,600,000	26,120
Share-based compensation arrangement by share-based payment award, number of additional awards		0
Share-based compensation arrangement by share-based payment award, number of shares available for grant		789,147

Business Combinations - Additio

Business Combinations - Additional Information (Details) $ in Millions	Jan. 31, 2020	Dec. 31, 2021USD ($)	Dec. 31, 2022USD ($)	Mar. 31, 2022Payment
Creative Systems
Business Acquisition [Line Items]
Business acquisition date		Dec. 31, 2021
Purchase price acquisition		$ 159.5
Working capital acquired		4.5
Measurement period adjustments		126.1
Creative Systems | Intangible Assets
Business Acquisition [Line Items]
Purchase price allocated to intangibles		28.9
Creative Systems | Customer Relationships
Business Acquisition [Line Items]
Purchase price allocated to intangibles		24.5
Creative Systems | Developed Technology
Business Acquisition [Line Items]
Purchase price allocated to intangibles		3.7
Creative Systems | Trade Names and Trademarks
Business Acquisition [Line Items]
Purchase price allocated to intangibles		0.6
Creative Systems | Non-compete Agreements
Business Acquisition [Line Items]
Purchase price allocated to intangibles		$ 0.1
ITG | Indemnity
Business Acquisition [Line Items]
Business combination, number of payment outstanding | Payment				1
Percentage of fair value acquisition discounting liabilities	3.25%
ITG | Indemnity | Forecast
Business Acquisition [Line Items]
Purchase price acquisition			$ 1.2

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Details) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Antidilutive securities excluded from computation of earnings per share, amount	53,819	10,327
Performance Shares | Initial Performance Vesting Period
Share-based compensation arrangement by share-based payment award, award vesting period	2 years

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Dilutive Effect of Stock Options RSUs and PSAs (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net Income	$ 17,862	$ 18,351
Weighted-average number of basic shares outstanding during the period	18,795	18,885
Dilutive effect of stock options, RSUs, and performance shares	217	233
Weighted-average number of diluted shares outstanding during the period	19,012	19,118
Basic earnings per share	$ 0.95	$ 0.97
Diluted earnings per share	$ 0.94	$ 0.96

Share Repurchase Program - Addi

Share Repurchase Program - Additional Information (Details)	1 Months Ended	3 Months Ended
	Feb. 02, 2022USD ($)$ / sharesshares	Mar. 31, 2022USD ($)$ / sharesshares	Mar. 31, 2021USD ($)shares	Dec. 31, 2021USD ($)shares	Nov. 30, 2021USD ($)	Sep. 30, 2017USD ($)
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount | $					$ 200,000,000	$ 100,000,000
Line of credit facility, condition permitted for unlimited share repurchases, leverage ratio					3.50	3.50
Stock Repurchased During Period, Shares | shares		176,375	151,200
Stock Repurchased During Period, Value | $		$ 17,000,000	$ 12,800,000
Credit Facility
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, remaining authorized repurchase amount | $		111,900,000
Share Repurchase Approved Starting on December 20, 2021 and Ending No Later Than June 30, 2022
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount | $	$ 16,300	$ 3,100		$ 20,000
Stock repurchase program, number of shares authorized to be repurchased | shares	165,000
Stock Repurchased During Period, Shares | shares	140,200	36,175
Average price per share | $ / shares	$ 98.55	$ 87
Maximum | Share Repurchase Approved Starting on December 20, 2021 and Ending No Later Than June 30, 2022
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, number of shares authorized to be repurchased | shares				165,000

Fair Value - Schedule of Financ

Fair Value - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets:
Assets, Total	$ 22,031	$ 20,426
Liabilities:
Liabilities, Total	20,438	24,043
Forward Contract Agreements | Accrued Expenses and Other Current Liabilities
Liabilities:
Liabilities, Total	182
Forward Contract Agreements | Prepaid Expenses and Other
Assets:
Assets, Total		267
Deferred Compensation Investments in Cash Surrender Life Insurance | Other Assets
Assets:
Assets, Total	19,026	20,159
Deferred Compensation Plan Liabilities | Other Long-Term Liabilities
Liabilities:
Liabilities, Total	19,748	20,129
Interest Rate Swap | Accrued Expenses and Other Current Liabilities
Liabilities:
Liabilities, Total	508	3,026
Interest Rate Swap | Other Assets
Assets:
Assets, Total	3,005
Interest Rate Swap | Other Long-Term Liabilities
Liabilities:
Liabilities, Total		888
Level 2
Assets:
Assets, Total	22,031	20,426
Liabilities:
Liabilities, Total	20,438	24,043
Level 2 | Forward Contract Agreements | Accrued Expenses and Other Current Liabilities
Liabilities:
Liabilities, Total	182
Level 2 | Forward Contract Agreements | Prepaid Expenses and Other
Assets:
Assets, Total		267
Level 2 | Deferred Compensation Investments in Cash Surrender Life Insurance | Other Assets
Assets:
Assets, Total	19,026	20,159
Level 2 | Deferred Compensation Plan Liabilities | Other Long-Term Liabilities
Liabilities:
Liabilities, Total	19,748	20,129
Level 2 | Interest Rate Swap | Accrued Expenses and Other Current Liabilities
Liabilities:
Liabilities, Total	508	3,026
Level 2 | Interest Rate Swap | Other Assets
Assets:
Assets, Total	$ 3,005
Level 2 | Interest Rate Swap | Other Long-Term Liabilities
Liabilities:
Liabilities, Total		$ 888

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - Subsequent Event	May 04, 2022$ / shares
Subsequent Event [Line Items]
Dividend declaration date	May 4, 2022
Cash dividend per share	$ 0.14
Dividend payment date	Jul. 14, 2022
Dividend record date	Jun. 10, 2022

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Jun. 10, 2016	Mar. 31, 2022
Loss Contingencies [Line Items]
Community development related to claim		$ 220.2
Board of Directors Chairman | Performance Shares
Loss Contingencies [Line Items]
Shares granted vested and accelerated		17,287
OCD vs ICF Emergency
Loss Contingencies [Line Items]
Loss contingency damages sought value	$ 200.8
Road Home Contract
Loss Contingencies [Line Items]
Contract term, period	3 years
Contract award, value	$ 912