ICF International (ICFI) 10-K 28 Feb 25 2024 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Feb. 21, 2025	Jun. 30, 2024
Cover [Abstract]
Entity Registrant Name	ICF INTERNATIONAL, INC.
Entity Central Index Key	0001362004
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Annual Report	true
Document Transition Report	false
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		18,436,146
Entity Public Float			$ 2,746
Document Type	10-K
Document Period End Date	Dec. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity File Number	001-33045
Entity Tax Identification Number	22-3661438
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Incorporation State Country Code	DE
Entity Address, Address Line One	1902 Reston Metro Plaza
Entity Address, City or Town	Reston
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	20190
City Area Code	703
Local Phone Number	934-3000
Auditor Firm ID	248
Auditor Name	Grant Thornton LLP
Auditor Location	Arlington, Virginia
Auditor Opinion [Text Block]	Opinion on the financial statements We have audited the accompanying consolidated balance sheets of ICF International, Inc. (a Delaware corporation) and subsidiaries (the “Company”) as of December 31, 2024 and 2023, the related consolidated statements of comprehensive income, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2024, and the related notes and financial statement schedule included under Item 15(2) (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2024, in conformity with accounting principles generally accepted in the United States of America. We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company’s internal control over financial reporting as of December 31, 2024, based on criteria established in the 2013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”), and our report dated February 28, 2025 expressed an unqualified opinion.
Title of each class	Common Stock, $0.001 par value
Trading Symbol	ICFI
Security Exchange Name	NASDAQ
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Part III incorporates information by reference from the Proxy Statement for the 2025 Annual Meeting of Stockholders expected to be held in June 2025 .

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 4,960	$ 6,361
Restricted cash	13,857	3,088
Contract receivables, net	256,923	205,484
Contract assets	188,941	201,832
Prepaid expenses and other assets	21,133	28,055
Income tax receivable	6,260	2,337
Total Current Assets	492,074	447,157
Property and Equipment, net	68,118	75,948
Other Assets:
Goodwill	1,248,855	1,219,476
Other intangible assets, net	88,262	94,904
Operating lease - right-of-use assets	115,531	132,807
Deferred tax assets	1,603
Other assets	51,910	41,480
Total Assets	2,066,353	2,011,772
Current Liabilities:
Current portion of long-term debt	0	26,000
Accounts payable	159,522	134,503
Contract liabilities	24,580	21,997
Operating lease liabilities	20,721	20,409
Finance lease liabilities	2,612	2,522
Accrued salaries and benefits	105,773	88,021
Accrued subcontractors and other direct costs	49,271	45,645
Accrued expenses and other current liabilities	86,701	79,129
Total Current Liabilities	449,180	418,226
Long-term Liabilities:
Long-term debt	411,743	404,407
Operating lease liabilities - non-current	155,935	175,460
Finance lease liabilities - non-current	11,261	13,874
Deferred income taxes	0	26,175
Other long-term liabilities	55,775	56,045
Total Liabilities	1,083,894	1,094,187
Commitments and Contingencies (Note 19)
Stockholders’ Equity:
Preferred stock, par value $.001 per share; 5,000,000 shares authorized; none issued
Common stock, $.001 par value; 70,000,000 shares authorized; 24,186,962 and 23,982,132 shares issued; and 18,666,290 and 18,845,521 shares outstanding at December 31, 2024 and 2023, respectively	24	24
Additional paid-in capital	443,463	421,502
Retained earnings	874,772	775,099
Treasury stock, 5,520,672 and 5,136,611 shares at December 31, 2024 and 2023, respectively	(320,054)	(267,155)
Accumulated other comprehensive loss	(15,746)	(11,885)
Total Stockholders’ Equity	982,459	917,585
Total Liabilities and Stockholders’ Equity	$ 2,066,353	$ 2,011,772

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2024	Dec. 31, 2023
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)	24,186,962	23,982,132
Common stock, outstanding (in shares)	18,666,290	18,845,521
Treasury stock, shares (in shares)	5,520,672	5,136,611

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue	$ 2,019,787	$ 1,963,238	$ 1,779,964
Direct costs	1,282,016	1,265,018	1,134,422
Operating costs and expenses:
Indirect and selling expenses	518,453	505,162	486,863
Depreciation and amortization	20,484	25,277	21,482
Amortization of intangible assets	32,992	35,461	28,435
Total operating costs and expenses	571,929	565,900	536,780
Operating income	165,842	132,320	108,762
Interest, net	(29,590)	(39,681)	(23,281)
Other income (expense)	1,806	3,908	(1,501)
Income before income taxes	138,058	96,547	83,980
Provision for income taxes	27,888	13,935	19,737
Net income	$ 110,170	$ 82,612	$ 64,243
Earnings per share:
Basic	$ 5.88	$ 4.39	$ 3.41
Diluted	$ 5.82	$ 4.35	$ 3.38
Weighted-average common shares outstanding:
Basic	18,747	18,802	18,818
Diluted	18,925	18,994	19,033
Cash dividends declared per common share	$ 0.56	$ 0.56	$ 0.56
Other comprehensive (loss) income, net of tax	$ (3,861)	$ (3,752)	$ 2,902
Comprehensive income, net of tax	$ 106,309	$ 78,860	$ 67,145

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2021	$ 803,470	$ 23	$ 384,984	$ 649,298	$ (219,800)	$ (11,035)
Balance (in shares) at Dec. 31, 2021		18,876,000			4,659,000
Net income	64,243			64,243
Other comprehensive income (loss)	2,902					2,902
Equity compensation	13,171		13,171
Exercise of stock options	602		602
Exercise of stock options (in shares)		19,000
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units	3,200		3,200
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units (in shares)		235,000
Net payments for stock buybacks	(23,866)				$ (23,866)
Net payments for stock buybacks (in shares)		(247,000)			247,000
Dividends declared	(10,511)			(10,511)
Balance at Dec. 31, 2022	853,211	$ 23	401,957	703,030	$ (243,666)	(8,133)
Balance (in shares) at Dec. 31, 2022		18,883,000			4,906,000
Net income	82,612			82,612
Other comprehensive income (loss)	(3,752)					(3,752)
Equity compensation	14,861		14,861
Exercise of stock options	279		279
Exercise of stock options (in shares)		8,000
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units	4,406	$ 1	4,405
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units (in shares)		185,000
Net payments for stock buybacks	(23,489)				$ (23,489)
Net payments for stock buybacks (in shares)		(230,000)			230,000
Dividends declared	(10,543)			(10,543)
Balance at Dec. 31, 2023	917,585	$ 24	421,502	775,099	$ (267,155)	(11,885)
Balance (in shares) at Dec. 31, 2023		18,846,000			5,136,000
Net income	110,170			110,170
Other comprehensive income (loss)	(3,861)					(3,861)
Equity compensation	16,722		16,722
Exercise of stock options	107		107
Exercise of stock options (in shares)		2,000
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units	5,132		5,132
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units (in shares)		202,000
Net payments for stock buybacks	(52,899)				$ (52,899)
Net payments for stock buybacks (in shares)		(384,000)			384,000
Dividends declared	(10,497)			(10,497)
Balance at Dec. 31, 2024	$ 982,459	$ 24	$ 443,463	$ 874,772	$ (320,054)	$ (15,746)
Balance (in shares) at Dec. 31, 2024		18,666,000			5,520

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash Flows from Operating Activities
Net income	$ 110,170	$ 82,612	$ 64,243
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	1,673	1,164	248
Deferred income taxes and unrecognized income tax benefits	(24,336)	(17,634)	7,428
Non-cash equity compensation	16,722	14,861	13,171
Depreciation and amortization	53,476	60,738	49,917
Gain on divestiture of a business	(2,009)	(7,590)
Other operating, net	4,647	8,294	10,683
Changes in operating assets and liabilities, net of the effect of acquisitions:
Net contract assets and liabilities	14,668	(38,422)	(41,634)
Contract receivables	(49,538)	20,939	19,732
Prepaid expenses and other assets	3,496	18,579	(20,737)
Operating lease assets and liabilities, net	(4,755)	3,544	(1,466)
Accounts payable	24,152	(1,489)	30,003
Accrued salaries and benefits	18,048	2,175	(3,337)
Accrued subcontractors and other direct costs	4,353	(269)	6,965
Accrued expenses and other current liabilities	8,361	(4,757)	24,742
Income tax receivable and payable	(5,391)	9,277	(1,526)
Other liabilities	(2,193)	361	3,774
Net Cash Provided by Operating Activities	171,544	152,383	162,206
Cash Flows from Investing Activities
Payments for purchase of property and equipment and capitalized software	(21,430)	(22,337)	(24,475)
Payments for business acquisitions, net of cash acquired	(55,007)	(32,664)	(237,280)
Proceeds from working capital adjustments related to prior business acquisition			2,911
Proceeds from divestiture of a business	1,985	51,328
Other investing, net	(353)
Net Cash Used in Investing Activities	(74,805)	(3,673)	(258,844)
Cash Flows from Financing Activities
Advances from working capital facilities	1,227,926	1,245,198	1,583,936
Payments on working capital facilities	(1,247,791)	(1,372,474)	(1,446,125)
Proceeds from other short-term borrowings	62,080	48,532
Repayments of other short-term borrowings	(66,408)	(41,653)
Receipt of restricted contract funds	1,251	7,672	15,721
Payment of restricted contract funds	(3,267)	(8,084)	(25,959)
Dividends paid	(10,507)	(10,537)	(10,547)
Net payments for stockholder issuances and share repurchases	(47,767)	(19,083)	(21,218)
Other financing, net	(2,415)	(2,159)	(5,437)
Net Cash (Used in) Provided by Financing Activities	(86,898)	(152,588)	90,371
Effect of Exchange Rate Changes on Cash, Cash Equivalents, and Restricted Cash	(473)	359	(1,198)
Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash	9,368	(3,519)	(7,465)
Cash, Cash Equivalents, and Restricted Cash, Beginning of Period	9,449	12,968	20,433
Cash, Cash Equivalents, and Restricted Cash, End of Period	18,817	9,449	12,968
Supplemental disclosure of cash flow information:
Interest	30,046	34,093	22,782
Income taxes	$ 60,221	26,190	16,476
Non-cash investing and financing transactions:
Tenant improvements funded by lessor		568	20,253
Acquisition of property and equipment through finance lease		$ 337	$ 18,319

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 110,170	$ 82,612	$ 64,243

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2024 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On December 7, 2024 , James Morgan , our Chief Operating Officer , adopted a trading plan intended to satisfy the affirmative defense conditions under Rule 10b5-1(c) of the Exchange Act. The plan is for the sale of up to 10,000 shares and terminates on the earlier of the date all shares covered by the plan have been sold and April 1, 2026.
Name	James Morgan
Title	Chief Operating Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	December 7, 2024
Aggregate Available	10,000

Insider Trading Policies and Pr

Insider Trading Policies and Procedures	12 Months Ended
	Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Cybersecurity Risk Management,

Cybersecurity Risk Management, Strategy, and Governance	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	ITEM 1C. CYBE RSECURITY As discussed in the “Item 1A. Risk Factors – Privacy, Cybersecurity, Technology, and Data Protection Risks,” we face certain ongoing risks from cybersecurity threats and recognize the critical importance of effective cybersecurity risk management in today's interconnected digital landscape. As part of our commitment to safeguarding our operations, sensitive data, and stakeholder trust, we have implemented robust cybersecurity practices and governance. Cybersecurity Risk Management Program We regularly assess and identify potential cybersecurity risks that could impact our business, financial condition, or reputation. Our risk assessment process includes: • Enterprise Risk Management: We maintain an enterprise risk management process that embeds cybersecurity within the risk assessment strategy. • Threat Landscape Analysis: We monitor emerging threats, vulnerabilities, and attack vectors relevant to our industry and business operations. • Risk Scenarios: We evaluate potential scenarios, with considerations to both internal and external threats, to understand their potential impact. • Risk Quantification: We assess the likelihood and potential financial, operational, and reputational impact of identified risks. Our risk mitigation strategy focuses on measures to prevent, detect, and respond to cybersecurity incidents. The primary components of our risk mitigation strategy include: • Security Controls: We maintain a comprehensive set of controls aligned with industry standards such as the National Institute of Standards and Technology (“NIST”) and the International Organization of Standards (“ISO”) 27001 to protect our systems, networks, and data. • Incident Response Plan: We have a well-defined incident response plan that outlines roles, responsibilities, and procedures for handling cybersecurity incidents. • Employee Training and Awareness: We have training programs to ensure that our employees understand their role in maintaining a secure environment and recognize potential threats. • Third-Party Risk Assessment and Management: We assess and manage cybersecurity risks associated with our vendors, partners, and service providers. Our approach to information security follows a defense-in-depth methodology in which security is embedded throughout the system architecture. Technical controls rely on proven technologies, such as network-based intrusion detection systems, next generation firewalls with advanced threat detection, secure server networks, demilitarized zones, and endpoint detection and response capabilities. Security techniques, such as encryption at rest and encryption in transit, are used to incorporate relevant practices. We undergo annual third-party security assessments such as security control compliance reviews, incident response exercises, penetration testing, and red team drills to maintain the effectiveness of the security program. Our critical corporate information systems are maintained in a commercial grade data center with climate controls, fire suppression, redundant power, and several telecommunication options. The data center is designed to host mission-critical computer systems with fully redundant subsystems and compartmentalized security zones. Our primary data center also undergoes independent assessment on an annual basis. Our computing infrastructures are protected by multiple independent layers of security measures managed by the corporate information security department. Our approach to accessing protected networks is based on the principle of least privilege. Notwithstanding the vigorous approach we take to cybersecurity, we may not always be successful in preventing or mitigating a cybersecurity incident that could have a material adverse effect on us. To date, we have not identified cybersecurity risks, threats, or incidents that have materially affected us or are reasonably likely to materially affect us, including our operations, business strategy, results of operations, or financial conditions. Cybersecurity Governance and Oversight Our Board, directly or through its committees, is responsible for the oversight of the Company's overall enterprise risk management program, which includes cybersecurity risks. Our Audit Committee regularly reviews and evaluates cybersecurity risks and the procedures and policies implemented by management to identify, manage, and mitigate such risks. Management is responsible for day-to-day assessment and management of cybersecurity risks. Our current Chief Information Officer (the “CIO”), the Deputy Chief Information Office (the “Deputy CIO”) and the Chief Information Security Officer (the “CISO”) have primary oversight of material risks from cybersecurity threats. The CIO has decades of professional experience across various engineering, business and management roles. Our Deputy CIO has over 30 years of experience leading implementation of various IT infrastructure and systems, and our CISO has over 20 years of specific cybersecurity experience and is responsible for maintaining compliance with applicable security requirements. They have a combined tenure of over three decades with the Company in various progressive management roles in information systems and technology and in formation security. They conduct regular meetings with the Audit Committee and the Board to communicate updates on cybersecurity risks, incidents, and mitigation efforts. The CISO and our security staff provide ongoing support to internal operations and oversight to our systems that offer services to our clients within our enterprise network. Our security staff is also augmented through an industry-recognized security operations center where systems are continuously monitored.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	• Enterprise Risk Management: We maintain an enterprise risk management process that embeds cybersecurity within the risk assessment strategy.
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Our Board, directly or through its committees, is responsible for the oversight of the Company's overall enterprise risk management program, which includes cybersecurity risks. Our Audit Committee regularly reviews and evaluates cybersecurity risks and the procedures and policies implemented by management to identify, manage, and mitigate such risks.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Board, directly or through its committees, is responsible for the oversight of the Company's overall enterprise risk management program, which includes cybersecurity risks.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Audit Committee regularly reviews and evaluates cybersecurity risks and the procedures and policies implemented by management to identify, manage, and mitigate such risks.
Cybersecurity Risk Role of Management [Text Block]	Management is responsible for day-to-day assessment and management of cybersecurity risks. Our current Chief Information Officer (the “CIO”), the Deputy Chief Information Office (the “Deputy CIO”) and the Chief Information Security Officer (the “CISO”) have primary oversight of material risks from cybersecurity threats. The CIO has decades of professional experience across various engineering, business and management roles. Our Deputy CIO has over 30 years of experience leading implementation of various IT infrastructure and systems, and our CISO has over 20 years of specific cybersecurity experience and is responsible for maintaining compliance with applicable security requirements. They have a combined tenure of over three decades with the Company in various progressive management roles in information systems and technology and in formation security. They conduct regular meetings with the Audit Committee and the Board to communicate updates on cybersecurity risks, incidents, and mitigation efforts. The CISO and our security staff provide ongoing support to internal operations and oversight to our systems that offer services to our clients within our enterprise network. Our security staff is also augmented through an industry-recognized security operations center where systems are continuously monitored.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Our current Chief Information Officer (the “CIO”), the Deputy Chief Information Office (the “Deputy CIO”) and the Chief Information Security Officer (the “CISO”) have primary oversight of material risks from cybersecurity threats.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	The CIO has decades of professional experience across various engineering, business and management roles. Our Deputy CIO has over 30 years of experience leading implementation of various IT infrastructure and systems, and our CISO has over 20 years of specific cybersecurity experience and is responsible for maintaining compliance with applicable security requirements. They have a combined tenure of over three decades with the Company in various progressive management roles in information systems and technology and in formation security.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	The CISO and our security staff provide ongoing support to internal operations and oversight to our systems that offer services to our clients within our enterprise network. Our security staff is also augmented through an industry-recognized security operations center where systems are continuously monitored.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Basis of Presentation and Natur

Basis of Presentation and Nature of Operations	12 Months Ended
	Dec. 31, 2024
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. Intercompany transactions and balances have been eliminated. Certain amounts reported in the previous year's consolidated statements of cash flows have been combined to conform to the current year presentation. Nature of Operations The Company primarily provides professional services and technology-based solutions, including management, technology, and policy consulting and implementation services, in the areas of energy, environment, infrastructure, and disaster recovery; health and social programs; security and other civilian & commercial. The Company offers a full range of services to clients throughout the entire life cycle of a policy, program, project, or initiative, from research and analysis, 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 customers are U.S. federal government departments and agencies. The Company also serves U.S. state (including territories) and local government departments and agencies, international governments, and commercial clients worldwide. Commercial clients primarily include airlines, airports, electric and gas utilities, health care companies, banks and other financial services companies. The terms “federal” or “federal government” refer to the U.S. federal government, and “state and local” or “state and local government” refer to U.S. state (including territories) and local governments, unless otherwise indicated. The Company, incorporated in Delaware, is headquartered in Reston, Virginia. It maintains additional offices throughout the world, including more than 55 offices in the U.S. and U.S. territories and 15 offices in key markets outside the U.S., including offices in the United Kingdom (“U.K.”), Belgium, Spain, India, and Canada.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 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 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 and divestitures, impairment of long-lived assets, accrued liabilities, revenue recognition (including estimates of variable considerations in determining the total contract price and allocation of performance obligations), the remaining 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. Revenue Recognition The Company enters into agreements with clients that create enforceable rights and obligations and for which it is probable that the Company will collect the consideration to which it will be entitled as services and solutions are transferred to the client. Except in certain narrowly defined situations, the Company’s agreements with its clients are written and revenue is generally not recognized on oral or implied arrangements. The Company recognizes revenue based on the consideration specified in the applicable agreement and excludes payments to customers and amounts collected on behalf of third parties. Accordingly, sales and similar taxes which are collected on behalf of third parties are excluded from the transaction price. The Company evaluates whether two or more agreements should be accounted for as one single contract and whether combined or single agreements should be accounted for as more than one performance obligation. For most contracts, the client requires the Company to perform a number of tasks in providing an integrated output for which the client has contracted, and, hence, contracts of this type are tracked as having only one performance obligation since a substantial part of the Company’s promise is to ensure the individual tasks are incorporated into a combined output in accordance with contract requirements. When contracts have multiple performance obligations, the Company allocates the total transaction price to each performance obligation based on the estimated relative standalone selling prices of the promised services underlying each performance obligation. The Company generally provides customized solutions in which the pricing is based on specific negotiations with each client, and, in these cases, the Company uses a cost-plus margin approach to estimate the standalone selling price of each performance obligation. Certain contracts contain award fees, incentive fees or other provisions that can either increase or decrease the transaction price. These variable amounts are generally awarded at the completion of a contractually stipulated performance assessment period based on the achievement of performance metrics, program milestones or cost targets, and the amount awarded may be subject to client discretion. Variable consideration is estimated based on the most likely amount. Once the Company selects a method to estimate variable consideration, it applies that method consistently. Estimates of variable consideration will be constrained only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur. The Company evaluates contractual arrangements to determine whether revenue should be recognized on a gross versus net basis. The Company’s assessment is based on the nature of the contractual obligation to the client. In most cases, the Company itself agrees to provide specified services to the client as a principal and revenue is recognized on a gross basis. In certain instances, the Company acts as an agent and merely arranges for another party to provide services to the client and revenue is recognized on a net basis in reflection of the fact that the Company does not control the goods or services provided to the client by the other party. Long-term contracts typically contain billing terms that provide for invoicing monthly or upon completion of milestones, and payment on a net 30 -day basis. Therefore, the timing of billings and cash receipts may differ from the timing of revenue recognition resulting in either contract assets or contract liabilities. Exceptions to monthly billing terms are to ensure that the Company performs satisfactorily rather than representing a significant financing component. For cost-based contracts, the Company’s performance is evaluated during a contractually-stipulated performance period and, while contract costs may be billed on a monthly basis, the Company is generally permitted to bill for incentive or award fees only after the completion of the performance assessment period, which may occur quarterly, semi-annually or annually, and after the client completes the performance assessment. Fixed-price contracts may provide for milestone billings based on the attainment of specific project objectives rather than for billing on a monthly basis. Moreover, contracts may require retention or hold backs that are paid at the end of the contract to ensure that the Company performs in accordance with requirements. The Company does not assess whether a contract contains a significant financing component if the Company expects, at contract inception, that the period between payment by the client and the transfer of promised services to the client will be one year or less. The Company generally recognizes revenue over time as control is transferred to a client, based on the extent of progress towards satisfaction of the performance obligation. The selection of the method used to measure progress requires judgment and is dependent, among other factors, on the contract type and the nature of the services provided. For time-and-materials contracts, the Company uses the right-to-invoice practical expedient to recognize revenue earned based on hours worked in contract performance at negotiated billing rates. Fixed-price level-of-effort contracts are substantially similar to time-and-materials contracts except that the Company is required to deliver a specified level of effort over a stated period of time. For these contracts, the Company determines the revenue earned using contract hours worked at negotiated bill rates as the Company delivers the contractually required workforce. For certain cost-based contracts that meet the criteria for the right-to-invoice practical expedient to be used, the Company recognizes revenue based on the amount to which the Company has a contractual right to invoice which is typically costs incurred plus contractually-stipulated fixed fees. Cost-based contracts may include variable consideration which is allocated to the distinct periods in which they relate to and recognized in that period. For series-services performance obligations, the Company measures progress using either a cost input measure, a time-elapsed output measure, or the right to invoice practical expedient. For certain fixed-price contracts, the Company uses the percentage-of-completion method to estimate the amount of revenue, based on the ratio of actual costs incurred to total estimated costs, provided that costs incurred (an input method) represents a reasonable measure of progress towards the satisfaction of a performance obligation and transfer of control to the customer. This method provides a faithful depiction of the transfer of value to the client when the Company is satisfying a performance obligation that entails integration of tasks for a combined output, which requires the Company to coordinate the work of employees, subcontractors and delivery of other contract costs. Contract costs that are not reflective of the Company’s progress toward satisfying a performance obligation are not included in the calculation of the measure of progress. When this method is used, the changes in estimated costs to complete the obligations result in adjustments to revenue on a cumulative catch-up basis, which causes the effect of revised estimates for prior periods to be recognized in the current period. Changes in these estimates may routinely occur over contract performance for a variety of reasons, which include: changes in contract scope; changes in contract cost estimates due to unanticipated cost growth or reassessments of risks impacting costs; changes in estimated incentive or award fees; or performing better or worse than previously estimated. For fixed-price contracts in which the estimated cost to perform exceeds the consideration to be received, the Company accrues for the entire estimated loss during the period in which the loss is determined by recording additional direct costs. In some fixed-price service contracts, the Company performs services of a recurring nature, such as maintenance and other services of a “stand ready” nature. For these contracts, the Company has the right to consideration in an amount that corresponds directly with the value that the client has received. Therefore, the Company records revenue on a time-elapsed basis to reflect the transfer of control to the client throughout the contract. Contracts may be modified to reflect changes in contract specifications and requirements, and these changes may create new enforceable rights and obligations. Modifications that are for services that are not distinct from the existing agreement due to the significant integration service that the Company provides are accounted for as part of an existing performance obligation. The effect of these modifications on the transaction price and the Company’s measure of progress in fulfilling the performance obligation to which they relate is recognized as an adjustment to revenue on a cumulative catch-up basis. Revenue from modifications that create new, distinct performance obligations is recognized based on the Company’s progress in fulfilling the requirements of the new obligations. For performance obligations that are satisfied over time, the Company recognizes the cost to fulfill contracts when incurred, unless the costs are within the scope of another topic in which case the guidance of that topic is applied. The Company evaluates incremental costs of obtaining a contract and, if they are recoverable from the client and relate to a specific future contract, they are deferred and recognized over contract performance or the estimated life of the customer relationship if renewals are expected. The Company expenses these costs when incurred if the amortization period is one year or less. Unfulfilled performance obligations represent amounts expected to be earned on non-cancellable contracts or those that are cancellable, but the Company has determined to have substantive termination penalties, and do not include the value of negotiated, unexercised contract options, which are classified as marketing offers. Indefinite delivery/indefinite quantity and similar arrangements provide a framework for the client to issue specific tasks, delivery or purchase orders in the future and these arrangements are considered marketing offers until a specific order is executed. Some of the Company’s contracts include variable consideration, which requires the Company to estimate and, as necessary, revise the most likely amounts that will be earned over the respective performance assessment periods. For these obligations, changes in estimates result in cumulative catch-up adjustments and may have a significant impact on earnings during a given period. The Company’s operating cycle for long-term contracts may be greater than one year and is measured by the average time between the inception and completion of those contracts. Contract-related assets and liabilities are classified as current assets and current liabilities. Cash and Cash Equivalents The Company considers cash on deposit and any highly liquid investments with original maturities of three months or less when purchased to be cash and cash equivalents. Restricted Cash Restricted cash represents cash that is restricted as to usage due to contractual restrictions. Contract Receivables, Net Contract receivables represent amounts billed and due from clients in accordance with respective contractual terms. The amounts due are stated at their net realizable value. The Company estimates an allowance for expected credit loss to reflect the amount of receivables that will not be collected. The Company considers a number of factors in estimating the amount of the allowance, including knowledge of a client’s financial condition, its historical collection experience, and other factors relevant to assessing the collectability of the receivables. The Company writes off contract receivables when such amounts are determined to be uncollectible. Property and Equipment Property and equipment are carried at cost and are depreciated using the straight-line method over their estimated useful lives, which range from two to seven years . Leasehold improvements are amortized on a straight-line basis over the shorter of the economic life of the improvement or the related lease term. Goodwill and Indefinite-Lived Assets Goodwill represents the excess of the purchase consideration over the fair value of net assets of businesses acquired. Goodwill and any intangible assets acquired in a business combination that are deemed to have an indefinite useful life are not amortized, but instead are reviewed for impairment annually, or more frequently if impairment indicators arise. The Company performs its annual goodwill impairment test as of October 1 of each year. As its business is highly integrated and all of its components have similar economic characteristics, the Company has concluded it has one aggregated reporting unit at the consolidated entity level and performs the assessment at that level. The Company has the option to perform a qualitative assessment that determines if it is more likely than not that the estimated fair value of goodwill is greater than its carrying value and, if so, the Company may conclude that there are no indicators of impairment. If the Company concludes that an indicator exists, a quantitative test is performed by comparing the reporting unit’s fair value to the carrying amount and recognizing the difference as an impairment loss. Impairment of Long-Lived Assets The Company reviews its long-lived assets, including property and equipment, operating lease right-of-use (“ROU”) assets, and definite-lived intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amounts of the long-lived asset group may not be fully recoverable. If the total of the expected undiscounted future net cash flows is less than the carrying amount of the long-lived asset group being evaluated, a loss is recognized for any excess of the carrying amount over the fair value of the asset group. During the years ended December 31, 2024, 2023, and 2022 , the Company recognized impairment losses of $ 3.6 million, $ 6.8 million, and $ 8.4 million, respectively, related to operating facility lease right-of-use assets and leasehold improvements that it no longer used in ongoing operations. The impairment losses were included in indirect and selling expenses on the Company’s consolidated statements of comprehensive income. Leases The Company leases facilities and property and equipment. The Company determines if an arrangement is a lease at its inception and recognizes a right-of-use asset and obligation for all leases greater than twelve months based on the present value of the future minimum lease payments as of the commencement date, excluding any lease incentives and initial costs incurred to obtain the lease. Since most lease agreements do not provide an implicit rate, the Company uses its incremental borrowing rate as of the commencement date, based on publicly available yields adjusted for company-specific considerations and terms, in estimating the present value of future payments. Lease terms, for the purpose of determining each lease’s present value, include options to extend or terminate the lease if it is reasonably certain and economically reasonable that the Company will exercise that option. Lease costs from minimum lease payments are recognized on a straight-line basis over the lease term. The leases may contain both lease and non-lease components, which are generally accounted for separately. For office equipment leases (primarily copier leases), the Company elected to account for the lease and non-lease components as a single lease component and not recognize right-of-use assets and lease liabilities for leases with a term less than twelve months. Operating leases are included in operating lease right-of-use assets and operating lease liabilities (current and non-current) and finance leases are included in property and equipment, net and finance lease liabilities (current and non-current) on the consolidated balance sheets. Capitalized Software and Costs of Cloud Computing Arrangements The Company capitalizes certain costs to develop, enhance, and upgrade internal-use software. Capitalized costs include external direct costs and payroll costs for employees directly associated with such activities. These costs are amortization on a straight-line basis over the expected economic life of the software, typically lasting three to five years . As of December 31, 2024, and 2023, capitalized software, net of accumulated amortization, totaled $ 21.8 million and $ 12.8 million , respectively. The Company capitalizes costs related to the implementation costs of cloud computing arrangements that are service contracts. These costs are amortized over the term of the hosting arrangement. As of December 31, 2024 and 2023, capitalized costs, net of accumulated amortization, totaled $ 2.8 million and $ 2.6 million , respectively. The amounts are included as part of other assets on the consolidated balance sheets. Stock-Based Compensation The Company recognizes stock-based compensation expense to employees and non-employee directors, including grants of stock options, restricted stock awards, restricted stock units (“RSUs”), and cash-settled restricted stock units (“CSRSUs”) on a straight-line basis over the requisite service period, which is generally the vesting period. The Company recognizes expense for performance-based share awards (“PSAs”), which have both performance and service conditions, on a straight-line basis over the three-year performance period. Non-employee director awards are granted annually for Board-related services and therefore expensed over the service period of one year . Stock-based compensation expense is based on the estimated fair value of the instruments on the grant date and the estimated number of shares the Company ultimately expects will vest. The Company estimates the rate of future forfeitures based on factors which include the historical forfeiture experience from the previous 10 years for each applicable employee class. In addition, the estimation of PSAs that will ultimately vest requires judgment based on the performance and market conditions that will be achieved over the performance period. Changes to these estimates are recorded as a cumulative adjustment in the period estimates are revised. The fair value of stock options, restricted stock awards, RSUs, PSAs, and non-employee director awards is estimated based on the fair value of a share of common stock at the grant date. The fair value of PSAs is estimated using a Monte Carlo simulation model. CSRSUs are settled only in cash payments based on the fair value of the Company’s stock price at the vesting date, calculated by multiplying the number of CSRSUs vested by the Company’s closing stock price on the vesting date, subject to a maximum payment cap and a minimum payment floor. The Company treats these awards as liability-classified awards, and, therefore, accounts for them based on the closing price of the Company’s stock at the reporting date. Derivative Instruments Derivative instruments include interest rate swaps, foreign currency hedges, and forward contracts. Derivative instruments designated as cash flow hedges are recorded on the consolidated balance sheets at fair value as of the reporting date and reclassified to earnings (to the same category as the item being hedged) in the period that the hedged instruments affect earnings, and the effective portion of the hedge is recorded in other comprehensive income (loss) (“AOCI”), net of tax, on the consolidated statements of comprehensive income. Management reviews the effectiveness of the hedges on a quarterly basis. Income Taxes The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The Company evaluates its ability to benefit from all deferred tax assets and establishes valuation allowances for amounts it believes will more likely than not be realizable. For uncertain tax positions, the Company uses a more-likely-than-not recognition threshold based on the technical merits of the income tax position taken. Income tax positions that do not meet the more-likely-than-not recognition threshold are measured in order to determine the tax benefit recognized in the financial statements. Penalties, if probable and reasonably estimable, and interest expense related to uncertain tax positions are not recognized as a component of income tax expense but recorded separately in indirect expenses and interest expense, respectively. Treasury Shares Repurchased shares are accounted for as treasury stock under the cost method. Foreign Currency The financial positions and results of operations of the Company’s foreign subsidiaries, for which the functional currency is not the U.S. dollar, are translated into U.S. dollars for financial reporting purposes. Assets and liabilities of the subsidiaries are translated at the exchange rate in effect at each balance sheet date. Income statement accounts are translated at the average rate of exchange prevailing during the period. Translation adjustments are reported in accumulated other comprehensive loss included in stockholders’ equity in the Company’s consolidated balance sheets. Other Comprehensive Income (Loss) Other comprehensive income (loss) includes foreign currency translation adjustments, the changes in fair value of interest rate agreements designated as cash flow hedges, net of taxes, and the gain on the sale of an interest rate hedge agreement designated as a cash flow hedge. Acquisition-Related Costs Costs related to acquisitions include professional fees for legal, financial, and other advisory services and are expensed in the period that they are incurred. Business Combinations Acquisitions that meet the definition of a business in accordance with ASC 805, Business Combinations, are recorded using the acquisition method of accounting. Except for contract assets and contract liabilities, the Company recognizes and measures identifiable assets acquired, liabilities assumed, and any non-controlling interest as of the acquisition date at fair value. Contract assets and contract liabilities from acquired contracts are measured as if the Company had originated the contracts. The valuation of intangible assets is determined by using an approach: market, income, or cost approach. The excess, if any, of total consideration transferred in a business combination over the fair value of identifiable assets acquired, liabilities assumed and any non-controlling interest is recognized as goodwill. Direct Costs Direct costs exclude depreciation and amortization and amortization of intangible assets, which are presented separately on the consolidated statements of comprehensive income. Indirect and Selling Expense Indirect and selling expenses exclude depreciation and amortization, and amortization of intangible assets, which are presented separately on the consolidated statements of comprehensive income. Fair Value The Company measures and reports certain financial assets and liabilities at fair value in accordance with the Financial Accounting Standards Board (the “FASB”) Accounting Standards Codification (“ASC”) 820, Fair Value Measurements and Disclosures (“ASC 280”). Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. Generally, fair value is based on observable quoted market prices or derived from observable market data when such market prices or data are available. ASC 820 establishes a three-level hierarchy used to estimate fair value by which each level is categorized based on the priority of the inputs used to measure fair value: • Level 1: Quoted prices that are available in active markets for identical assets or liabilities; • Level 2: Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (e.g. interest rates and yield curves that are observable at commonly quoted intervals, and implied volatilities); and inputs derived principally from or corroborated by observable market data by correlation or other means; and • Level 3: Uses inputs that are unobservable and require the Company to make certain assumptions and require significant estimation and judgment from management to use in pricing the fair value of the assets and liabilities. Certain financial instruments, including cash and cash equivalents, contract receivables, and accounts payable are carried at cost, which, due to their short maturities, approximates their fair values. The carrying value of the Company’s long-term debt approximates the estimated fair value for debt with similar terms, interest rates, and remaining maturities currently available to companies with similar credit ratings (Level 2). Concentration of Credit Risks Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents, derivative financial instruments, and contract receivables. The Company’s domestic bank accounts are insured up to $ 250,000 by the Federal Deposit Insurance Corporation. As of December 31, 2024 and 2023, the Company had $ 9.3 million and $ 0.3 million , respectively, of cash in its accounts that exceeded the insured limit. The majority of the Company’s cash transactions are processed through one U.S. commercial bank. As of December 31, 2024 and 2023, the Company held approximately $ 4.6 million and $ 8.5 million , respectively, of cash and restricted cash in foreign bank accounts. The Company enters into derivative financial instruments with financial institutions that meet certain credit guidelines and limit its risks by continuously monitoring the credit rating of the institutions. The Company’s receivables consist principally of amounts due from agencies and departments of the federal government, state and local governments, and international governments, as well as from commercial organizations. The credit risk, with respect to federal and other government clients, is limited due to the creditworthiness of the respective governmental entity. Receivables from commercial clients generally pose a greater credit risk, and, as a result, are subject to ongoing monitoring. The Company extends credit in the normal course of operations and does not require collateral from its clients. Recent Accounting Pronouncements Accounting Pronouncements Adopted Segment Reporting In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07: Improvements to Reportable Segment Disclosures (“ASU 2023-07”), that required additional disclosures for public entities currently required under the ASC. While it does not change how a public entity identifies its operating segments, ASU 2023-07 enhances the current segment reporting disclosures of Topic 280 by requiring significant segment expenses that are regularly provided to the Chief Operating Decision Maker (the “CODM”), the amount and description of other segment items, and interim disclosures of reportable segment’s profit or loss and assets. ASU 2023-07 also requires public entities that have a single reportable segment to provide all the disclosures required in Topic 280, as amended. The Company completed its adoption of the provisions of ASU 2023-07 during the fourth quarter of 2024, see Note 22 – Segment Information and Geographic Data. Accounting Pronouncements Not Yet Adopted Income Taxes In December 2023, the FASB issued ASU 2023-09, Income Taxes: Improvements to Income Tax Disclosures (“ASU 2023-09”), that require greater disaggregation of income tax rate and amounts paid by entities. ASU 2023-09 specifically requires all entities to disclose, on an annual basis, disaggregated domestic and foreign pre-tax income or loss from continuing operations and the disaggregated income tax expense or benefit by federal, state, and foreign components, and a tabular rate reconciliation, using both percentages and reporting currency amounts, of eight specific categories as well as any individual reconciling items that are equal to or greater than 5% of a threshold computed by multiplying pretax income or loss from continuing operations by the applicable federal rate. Additionally, the amendments also require disclosure of income taxes paid disaggregated by federal, state, and foreign jurisdictions as well as any individual jurisdictions over 5% of the total income taxes paid. ASU 2023-09 is effective for the Company for the 2025 fiscal year, with early adoption permitted. The amendments may be adopted on a prospective or retrospective basis. The Company is currently evaluating the impact of the adoption of ASU 2023-09 but does not expect the adoption to have a material impact, if any, on the consolidated financial statements. Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures In November 2024, the FASB issued ASU 2024-03: Disaggregation of Income Statement Expenses (“ASU 2024-03”), which requires additional disaggregation of certain costs and expenses. ASU 2024-03 specifically requires all public entities to disclose within a tabular format the amounts of (a) purchases of inventory, (b) employee compensation, (c) depreciation, (d) intangible asset amortization, and (e) depreciation, depletion, and amortization recognized as part of oil- and gas-producing activities in each relevant expense caption as well as certain amounts that are already required to be disclosed under current U.S. GAAP. ASU 2024-03 also requires public entities to disclose a qualitative description of the composition of any amounts in relevant expense captions that are not separately disaggregated and the amount and definition of the entity’s selling expenses. ASU 2024-03 is effective for the Company for the 2027 fiscal year and interim periods within the 2028 fiscal year, with early adoption permitted. The amendments may be adopted on a prospective or retrospective basis. The Company is currently evaluating the impact of the adoption of ASU 2024-03 but does not expect the adoption to have a material impact, if any, on the consolidated financial statements.

Restricted Cash

Restricted Cash	12 Months Ended
	Dec. 31, 2024
Cash and Cash Equivalents [Abstract]
Restricted Cash	NOTE 3 - RESTRICTED CASH The following table provides a reconciliation of cash and cash equivalents, and restricted cash reported within the consolidated balance sheets at December 31, 2024 and 2023 to the total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows for the years ended December 31, 2024, 2023, and 2022: 2024 2023 2022 Beginning Ending Beginning Ending Beginning Ending Cash and cash equivalents $ 6,361 $ 4,960 $ 11,257 $ 6,361 $ 8,254 $ 11,257 Restricted cash 3,088 13,857 1,711 3,088 12,179 1,711 Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows $ 9,449 $ 18,817 $ 12,968 $ 9,449 $ 20,433 $ 12,968

Contract Receivables, Net

Contract Receivables, Net	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Contract Receivables, Net	NOTE 4 - CONTRACT RECEIVABLES, NET Contract receivables, net consisted of the following as of December 31: 2024 2023 Billed and billable $ 263,624 $ 210,919 Allowance for expected credit losses ( 6,701 ) ( 5,435 ) Contract receivables, net $ 256,923 $ 205,484 The Company sells certain billed contract receivables in accordance with its Master Receivables Purchase Agreement (the “MRPA”) with MUFG Bank, Ltd. (“MUFG”). The contract receivables that are sold without recourse and where the Company does not retain any ongoing financial interest in the transferred receivables, other than providing servicing activities, are accounted for as sales under ASC 860, Transfers and Servicing (“ASC 860”). Consequently, these contract receivables are derecognized from the Company’s consolidated balance sheets at the date of the sale, and the cash received from MUFG is presented as part of cash flows from operating activities. The following is a reconciliation of billed contract receivables sold to MUFG that were eligible and accounted for as sales under ASC 860, including billed contract receivables sold to MUFG and collected from customers on behalf of MUFG during the twelve months ended December 31, 2024 and 2023, and the balance of billed contract receivables not yet collected from customers as of December 31, 2024 and 2023, respectively: As of and for the Year Ended December 31, 2024 December 31, 2023 Beginning balance, billed contract receivables sold and not yet collected (1) $ 21,302 $ 3,818 Billed contract receivables sold during the period (2) 634,081 260,904 Collections from customers during the period (2) ( 629,417 ) ( 243,420 ) Ending balance, billed contract receivables sold and not yet collected (3) $ 25,966 $ 21,302 (1) The beginning balances represent billed contract receivables that were previously sold and derecognized by the Company but have not yet been collected from customers as of January 1, 2024 and 2023 , respectively. (2) For the twelve months ended December 31, 2024 and 2023, the Company recorded net inflows of $ 4.7 million and $ 17.5 million , respectively, in its cash flows from operating activities from the sale of billed contract receivables. (3) The ending balances represent billed contract receivables that were sold and derecognized by the Company but have not yet been collected from customers as of December 31, 2024 and 2023 , respectively. The following is a reconciliation of cash collections from customers of billed contract receivables previously sold to MUFG that were eligible and accounted for as sales under ASC 860, including collections from customers on behalf of MUFG of previously sold billed contract receivables and remittances of cash collections to MUFG during the twelve months ended December 31, 2024 and 2023, and the balance of cash collected but not yet remitted to MUFG as of December 31, 2024 and 2023, respectively: As of and for the Year Ended December 31, 2024 December 31, 2023 Beginning balance, cash collected but not yet remitted to MUFG (1) $ 21,796 $ 6,165 Collections from customers during the period (2) 629,417 243,420 Remittances to MUFG during the period (2) ( 627,874 ) ( 227,789 ) Ending balance, cash collected but not yet remitted to MUFG (3) $ 23,339 $ 21,796 (1) The beginning balances represent cash collected from customers on behalf of MUFG for billed contract receivables that were previously sold and derecognized by the Company but have not yet been remitted to MUFG as of January 1, 2024 and 2023 , respectively. (2) For the twelve months ended December 31, 2024 and 2023, the Company recorded net inflows of $ 1.5 million and $ 15.6 million , respectively, in its cash flows from operating activities from the collection of billed contract receivables that were sold but not yet remitted to MUFG. (3) The ending balances are included as part of “Accrued expenses and other current liabilities” on the Company’s consolidated balance sheets. The Company services the receivables sold by collecting cash and remitting it to MUFG. The related servicing fee received from MUFG was immaterial. The aggregate impact of the sale of billed contract receivables on the Company’s operating cash flows was $ 6.2 million and $ 33.1 million for the twelve months ended December 31, 2024 and 2023, respectively. The Company also sold certain billed contract receivables to MUFG that did not qualify as sales under ASC 860. Consequently, the cash received from and remitted back to MUFG is presented as cash from financing activities within “Proceeds from other short-term borrowings” and “Repayments of other short-term borrowings” on the Company’s consolidated statements of cash flows. At December 31, 2024 and 2023, the amounts due to MUFG for cash collected and not yet remitted for billed contract receivables sold that did not qualify as sales under ASC 860 totaled $ 7.9 million and $ 6.9 million , respectively. These amounts are included as part of “Accrued expenses and other current liabilities” on the Company’s consolidated balance sheets.

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Property and Equipment	NOTE 5 - PROPERTY AND EQUIPMENT Property and equipment consisted of the following at December 31: 2024 2023 Leasehold improvements $ 53,096 $ 54,398 Purchased software 9,483 16,897 Furniture and office equipment 28,182 29,773 Computer equipment 43,695 44,661 134,456 145,729 Accumulated depreciation and amortization ( 66,338 ) ( 69,781 ) Total property and equipment, net $ 68,118 $ 75,948 Depreciation and amortization expense for the years ended December 31, 2024, 2023, and 2022 totaled $ 20.5 million , $ 25.3 million , and $ 21.5 million , respectively.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	NOTE 6 - GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill The changes in the carrying amount of goodwill for the fiscal years ended December 31 were as follows: 2024 2023 Balance as of January 1, 2024 $ 1,219,476 $ 1,212,898 Add: Goodwill resulting from business combinations 30,200 21,133 Less: Goodwill resulting from business divestitures — ( 16,921 ) Effect of foreign currency translation ( 821 ) 2,366 Balance as of December 31, 2024 $ 1,248,855 $ 1,219,476 See “Note 17 – Acquisitions and Divestitures” for the details of the business combination and divestiture resulting in the changes in goodwill. Other Intangible Assets Intangible assets with definite lives are primarily amortized over periods ranging from approximately 1 to 11 years. The weighted-average period of amortization for all intangible assets, calculated as of December 31, 2024, is 5.7 years. The customer-related intangible assets, which consist of customer contracts, backlog, and non-contractual customer relationships, are being amortized based on estimated cash flows and respective estimated economic benefit of the assets. The weighted-average period of amortization of the customer-related intangibles calculated as of December 31, 2024 is 5.7 years. Intangible assets related to developed technology are being amortized over a weighted-average period, calculated as of December 31, 2024, of 7.6 years. Intangible assets with an indefinite life consist of a domain name. Other intangibles consisted of the following at December 31: 2024 Gross Accumulated Net Carrying Customer-related $ 188,410 $ ( 108,215 ) $ 80,195 Developed technology 8,902 ( 1,279 ) 7,623 Trade name 1,570 ( 1,220 ) 350 Total amortizable intangible assets 198,882 ( 110,714 ) 88,168 Intangible with indefinite life 94 — 94 Total other intangible assets $ 198,976 $ ( 110,714 ) $ 88,262 2023 Gross Accumulated Net Carrying Customer-related $ 185,723 $ ( 93,911 ) $ 91,812 Developed technology 3,902 ( 904 ) 2,998 Trade name 1,280 ( 1,280 ) — Total amortizable intangible assets 190,905 ( 96,095 ) 94,810 Intangible with indefinite life 94 — 94 Total other intangible assets $ 190,999 $ ( 96,095 ) $ 94,904 Aggregate amortization expense for the years ended December 31, 2024, 2023, and 2022, was approximately $ 33.0 million , $ 35.5 million , and $ 28.4 million , respectively. The estimated future amortization expense relating to intangible assets is as follows: Year ending December 31, 2025 $ 35,590 2026 21,700 2027 6,574 2028 5,214 2029 4,534 Thereafter 14,556 Total $ 88,168

Leases

Leases	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Leases	NOTE 7 – LEASES The Company has operating and finance leases for facilities and equipment which have remaining terms ranging from 1 to 14 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 lease cost resulting from changes in these indices was included within variable lease cost. The Company’s lease cost is recognized on a straight-line basis over the lease term and is primarily included within indirect and selling expenses on the consolidated statements of comprehensive income. Lease cost consisted of the following: Year Ended December 31, 2024 2023 2022 Operating lease cost $ 22,085 $ 25,037 $ 37,889 Finance lease cost - amortization of right-of-use assets 2,040 2,040 598 Finance lease cost - interest 519 602 179 Short-term lease cost 724 669 509 Variable lease cost 289 222 146 Sublease income — ( 28 ) ( 92 ) Total lease cost $ 25,657 $ 28,542 $ 39,229 Future minimum lease payments under non-cancellable operating and finance leases as of December 31, 2024 were as follows: Operating Finance December 31, 2025 $ 26,183 $ 3,041 December 31, 2026 23,708 3,041 December 31, 2027 18,335 3,041 December 31, 2028 15,281 2,985 December 31, 2029 13,244 2,965 Thereafter 118,158 — Total future minimum lease payments 214,909 15,073 Less: Interest ( 38,253 ) ( 1,200 ) Total lease liabilities $ 176,656 $ 13,873 Lease liabilities - current $ 20,721 $ 2,612 Lease liabilities - non-current 155,935 11,261 Total lease liabilities $ 176,656 $ 13,873 Other information related to operating and finance leases is as follows: Year Ended December 31, 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 27,267 $ 20,368 Financing cash flows from finance leases $ 2,522 $ 2,438 Operating cash flows from finance leases $ 519 $ 602 Right-of-use assets obtained in exchange for new operating lease liabilities $ 3,730 $ 18,590 Property and equipment obtained in exchange for finance lease liabilities — 338 Weighted-average remaining lease term Operating leases 11.4 11.6 Finance leases 5.0 6.0 Weighted-average discount rate Operating leases 3.5 % 3.6 % Finance leases 3.4 % 3.4 %

Accrued Salaries and Benefits

Accrued Salaries and Benefits	12 Months Ended
	Dec. 31, 2024
Employee-related Liabilities, Current [Abstract]
Accrued Salaries and Benefits	NOTE 8 - ACCRUED SALARIES AND BENEFITS Accrued salaries and benefits consisted of the following at December 31: 2024 2023 Bonuses, liability-classified awards, and commissions $ 30,884 $ 27,371 Salaries 41,593 32,604 Paid time off and leave 18,028 16,415 Medical 7,548 5,685 Payroll taxes and withholdings 2,252 976 Other 5,468 4,970 Total accrued salaries and benefits $ 105,773 $ 88,021

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2024
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	NOTE 9 - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accrued expenses and other current liabilities consisted of the following at December 31: 2024 2023 Deposits $ 18,493 $ 20,246 Restricted contract funds 13,857 2,036 Taxes and insurance premiums 3,893 7,010 Facilities rental and lease exit costs 2,524 2,754 Interest 489 3,218 Professional services 2,761 1,943 Dividends 2,626 2,636 Cash collected not yet remitted to purchaser of billed receivables 31,252 28,675 Other accrued expenses and current liabilities 10,806 10,611 Total accrued expenses and other current liabilities $ 86,701 $ 79,129

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 10 - LONG-TERM DEBT On May 6, 2022, the Company entered into the Restated Credit Agreement with a group of lenders with (a) PNC Bank, National Association as the Administrative Agent and (b) PNC Capital Markets LLC, BOFA Securities, Inc., TD Securities (USA) LLC, Wells Fargo Securities, LLC and Citizens Bank, N.A., as joint lead arrangers. The various facilities under the Restated Credit Agreement are referred to as the “Credit Facility”. The Restated Credit Agreement amended and restated the Company’s prior credit agreement (the “Existing Credit Agreement”) to, among other things: (a) maintain the existing $ 600 million revolving credit facility (together and inclusive of a $ 75 million swing line sublimit and $ 100 million sublimit for letters of credit); (b) increase the existing term loan facility from $ 200 million to $ 300 million; (c) provide for a new delayed draw term loan facility of $ 400 million; (d) maintain the existing incremental credit facility to make, subject to approval of the lenders making such loans, incremental term or revolving credit loan(s) in the aggregate principal amount of not more than $ 300 million; (e) increase the maximum Consolidated Leverage Ratio (as such term is defined in the Restated Credit Agreement) from 4.00 to 1.00 to 4.50 to 1.00 (with temporary increases to 5.00 to 1.00 for the three fiscal quarters following a “Material Permitted Acquisition”, as such term is defined in the Restated Credit Agreement); (f) maintain the minimum Consolidated Interest Coverage Ratio (as such term is defined in the Restated Credit Agreement) of 3.00 to 1.00; (g) increase the foreign currency debt limit in Euro and Sterling Pounds from $ 30 million equivalent to $ 200 million equivalent; (h) modify LIBOR based interest pricing conventions with SOFR based interest pricing conventions; (i) extend the maturity date of the Credit Facility until May 6, 2027 ; (j) incorporate various provisions and conventions encouraged by the Loan Syndication and Trade Association; and (k) modify certain definitions and certain covenants. Under the Restated Credit Agreement, the Company may, at its discretion, borrow funds under the Credit Facility at interest rates based on both term SOFR (i.e., 1, 3, or 6-month rates) and the Base Rate (as defined herein), plus their applicable margins. The Base Rate is a fluctuating rate of interest equal to the highest of (a) the Overnight Bank Funding Rate (as defined in the Restated Credit Agreement), plus 0.5 %, (b) the Prime Rate (as defined in the Restated Credit Agreement) and (c) the Daily Simple SOFR Rate (as defined in the Restated Credit Agreement) plus 1 %, all as then adjusted to include the Applicable Margin (as defined in the Restated Credit Agreement) as then in effect (and as determined pursuant to the then-current Consolidated Leverage Ratio). For the years ended December 31, 2024 and 2023, the average interest rate on borrowings under the Credit Facility was 6.6 % and 6.7 % , respectively. Inclusive of the impact of floating-to-fixed interest rate swaps (see “Note 12 – Derivative Instruments and Hedging Activities”), the average interest rate was 5.3 % and 5.6 % for the years ended December 31, 2024 and 2023, respectively. The Credit Facility is collateralized by substantially all the assets of the Company and its material domestic subsidiaries and requires that the Company remain in compliance with certain financial and non-financial covenants including, but not limited to the Consolidated Leverage Ratio and the Consolidated Interest Coverage Ratio. The Credit Facility also includes other terms and conditions, covenants, and other provisions of the Restated Credit Agreement that are materially consistent with the Existing Credit Agreement. As of December 31, 2024, the Company was in compliance with all covenants. As of December 31, 2024, the Company had $ 411.7 million (net of unamortized debt issuance costs) of long-term debt outstanding from the Credit Facility and unused borrowing capacity of $ 541.1 million , from the available $ 600.0 million revolving line of credit under the Credit Facility. The unused borrowing capacity is inclusive of four outstanding letters of credit totaling $ 1.6 million . As of December 31, 2024 and 2023, long-term debt consisted of the following: December 31, 2024 December 31, 2023 Average Outstanding Average Outstanding Term Loan $ 200,250 $ 207,750 Delayed-Draw Term Loan 156,750 220,000 Revolving Credit 57,225 6,340 Total before debt issuance costs 6.6 % 414,225 6.7 % 434,090 Unamortized debt issuance costs ( 2,482 ) ( 3,683 ) $ 411,743 $ 430,407 Current portion of long-term debt $ — $ 26,000 Long-term debt - non-current 411,743 404,407 Total $ 411,743 $ 430,407 Future scheduled repayments of debt principal are as follows: Payments due by Term Loan Delayed-Draw Term Loan Revolving Credit Total December 31, 2025 $ — $ — $ — $ — December 31, 2026 — — — — December 31, 2027 200,250 156,750 57,225 414,225 Total $ 200,250 $ 156,750 $ 57,225 $ 414,225 Debt Issuance Cost The Company’s debt issuance costs are amortized over the term of indebtedness. Amortization of debt issuance costs totaling $ 1.2 million , $ 2.0 million , and $ 1.3 million was recorded for each of the years ended December 31, 2024, 2023, and 2022 , respectively, and was included as part of interest, net, on the Company’s consolidated statements of comprehensive income.

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue Recognition	NOTE 11 – REVENUE RECOGNITION Disaggregation of Revenue The Company disaggregates revenue from clients 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 client 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 the market or type of the ultimate client. 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 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. The Company’s revenue by client markets, type, and contract mix are in the following tables. Certain immaterial revenue amounts in the prior years have been reclassified due to minor adjustments and reclassification. Year ended December 31, 2024 2023 2022 Client Markets: Energy, environment, infrastructure, and disaster recovery $ 929,711 $ 805,942 $ 714,628 Health and social programs 764,477 814,789 704,465 Security and other civilian & commercial 325,599 342,507 360,871 Total $ 2,019,787 $ 1,963,238 $ 1,779,964 Year ended December 31, 2024 2023 2022 Client Type: U.S. federal government $ 1,087,349 $ 1,084,047 $ 980,746 U.S. state and local government 316,083 309,516 259,764 International government 110,798 103,446 103,609 Total Government 1,514,230 1,497,009 1,344,119 Commercial 505,557 466,229 435,845 Total $ 2,019,787 $ 1,963,238 $ 1,779,964 Year ended December 31, 2024 2023 2022 Contract Mix: Time-and-materials $ 855,538 $ 811,911 $ 713,693 Fixed-price 932,351 886,200 802,568 Cost-based 231,898 265,127 263,703 Total $ 2,019,787 $ 1,963,238 $ 1,779,964 Contract Assets and Liabilities: Contract assets consist of unbilled receivables on contracts where revenue recognized exceeds the amount billed. Contract liabilities result from advance payments received on a contract or from billings in excess of revenue recognized on long-term contracts. The following table summarizes the contract balances as of December 31, 2024 and December 31, 2023: December 31, 2024 December 31, 2023 Change Contract assets $ 188,941 $ 201,832 $ ( 12,891 ) Contract liabilities ( 24,580 ) ( 21,997 ) ( 2,583 ) Net contract assets (liabilities) $ 164,361 $ 179,835 $ ( 15,474 ) The net contract assets (liabilities) as of December 31, 2024 decreased by $ 15.5 million as compared to December 31, 2023, 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 years ended December 31, 2024 and 2023, the Company recognized $ 17.6 million and $ 17.8 million in revenue related to the contract liabilities balance at December 31, 2023 and 2022, respectively. Unfulfilled Performance Obligations: The Company had $ 1.3 billion in remaining unfulfilled performance obligations (“UPO”) as of December 31, 2024 which the Company expects to recognize as revenue approximately 61 % by December 31, 2025, 73 % by December 31, 2026, and the remaining thereafter. Subsequent to December 31, 2024, and through February 25, 2025, pursuant to the recent executive orders issued by the Administration or actions by DOGE, the Company received notices for termination-for-convenience and for stop-work orders. Had these termination-for-convenience occurred prior to December 31, 2024, the total UPO would be reduced by approximately $ 245 million. It is unknown if the stop-work orders notices will be lifted and the Company will resume work on these programs, or if the stop-work orders will result in a termination-for-convenience.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	NOTE 12 - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES The Company uses interest rate swap agreements (the “Swaps”) to manage its variable interest rate risk associated with its borrowings under the Credit Facility. The Company does not use such instruments for speculative or trading purposes. At December 31, 2024, the Company had floating-to-fixed interest rate swaps for an aggregate notional amount of $ 275.0 million, of which $ 100.0 million will mature on February 28, 2025 , $ 75.0 million will mature on February 28, 2028 , and $ 100.0 million will mature on June 27, 2028 . The C ompany has designated the Swaps as cash flow hedges. For the years ended December 31, 2024 and 2023, the effect of the Swaps on the Company’s financial statements are as follows: Cash Flow Hedging Derivatives Total Gain (Loss) Recorded to AOCI Amount of (Gain) or Loss Year Ended December 31, 2024 2023 2024 2023 Interest Rate Swaps $ 5,996 $ ( 45 ) $ ( 6,244 ) $ ( 6,982 ) As of December 31, 2024, $ 0.8 million in unrealized gains from the Swaps are expected to be reclassified from AOCI into earnings within the next twelve months .

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 15 - INCOME TAXES The domestic and foreign components of income before provision for income taxes are as follows for the years ended December 31: 2024 2023 2022 Domestic $ 134,068 $ 83,742 $ 80,372 Foreign 3,990 12,805 3,608 Income before income taxes $ 138,058 $ 96,547 $ 83,980 Income tax expense consisted of the following for the years ended December 31: 2024 2023 2022 Current: Federal $ 41,276 $ 28,108 $ 8,413 State 16,851 10,380 2,686 Foreign 1,647 2,247 1,661 Total current 59,774 40,735 12,760 Deferred: Federal ( 21,055 ) ( 20,279 ) 4,264 State ( 10,861 ) ( 6,915 ) 3,607 Foreign 30 394 ( 894 ) Total deferred ( 31,886 ) ( 26,800 ) 6,977 Income tax expense $ 27,888 $ 13,935 $ 19,737 Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and income tax purposes. Deferred tax assets (liabilities) consisted of the following at December 31: 2024 2023 Deferred Tax Assets Allowance for expected credit losses $ 1,648 $ 1,213 Accrued paid time off 3,525 3,039 State net operating loss carryforward 456 500 Stock-based compensation 6,076 5,523 Deferred compensation 6,568 5,765 Foreign tax credits 8,151 8,035 State tax credits 1,923 686 Foreign exchange 4,345 3,591 Foreign deferred 333 441 Accrued bonus 6,393 5,830 Capital loss 1,020 1,054 Facilities impairment 2,611 3,092 Capitalized research expenses 70,617 47,019 Depreciation 402 — Accrued liabilities and other 1,364 2,682 Lease liabilities 54,263 58,538 169,695 147,008 Less: Valuation Allowance ( 9,627 ) ( 9,021 ) Total Deferred Tax Assets 160,068 137,987 Deferred Tax Liabilities Payroll taxes ( 939 ) ( 725 ) Unbilled revenue ( 184 ) ( 284 ) Depreciation — ( 2,128 ) Amortization ( 108,009 ) ( 107,201 ) Deferred gain and other ( 2,543 ) ( 2,202 ) Lease assets - right-of-use ( 46,790 ) ( 51,622 ) Total Deferred Tax Liabilities ( 158,465 ) ( 164,162 ) Total Net Deferred Tax Assets (Liabilities) $ 1,603 $ ( 26,175 ) The Company measures certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is 27.0 %. Effective for tax years beginning after January 1, 2022, research and development costs are required to be capitalized and amortized over a period of five years for domestic and fifteen years for foreign research and development for income tax purposes. As a result of the capitalization, the Company rec ognized increases of $ 23.6 million and $ 28.1 million in deferre d tax asset for the years ended December 31, 2024 and 2023, respectively. As of December 31, 2024, the cumulative foreign tax credit carryforward balance increased by approximately $ 0.1 million and the valuation allowance required increased by approximately $ 0.1 million. No additional income taxes have been provided for any undistributed foreign earnings not subject to the transition tax. No additional deferred income taxes have been provided for the $ 5.0 million of additional favorable outside basis differences inherent in these foreign entities as of December 31, 2024 because these amounts continue to be permanently reinvested in foreign operations. As of December 31, 2024 , the Company has net operating loss (“NOL”) carryforwards for state income tax purposes of approximately $ 5.9 million, which expire between 2029 and 2034 . The Company acquired these NOLs as a result of its purchase of a business in November 2014. IRC Section 382 imposes an annual limitation on the use of a corporation’s NOLs, tax credits and other carryovers after an “ownership change” occurs. Section 382 imposes an annual limitation on the amount of post-ownership change taxable income a corporation may offset with pre-ownership change NOLs and credits. In general, the annual limitation is determined by multiplying the value of the corporation’s stock immediately before the ownership change (subject to certain adjustments) by the applicable long-term tax-exempt rate. Any unused portion of the annual limitation is available for use in future years until such NOLs are scheduled to expire (in general, NOLs may be carried forward 15 to 20 years). The Company established a full valuation allowance of approximately $ 0.5 million against the portion of the deferred tax asset which it is more-likely-than-not that it will not be recoverable (e.g. expiration of the statute of limitations, etc.) As of December 31, 2024, the C ompany had gross state income tax credit carryforwards of approximately $ 2.4 million, which expire between 2025 and 2035 . A deferred tax asset of approximately $ 1.9 million, net of federal benefit, has been established related to these state income tax credit carryforwards as of December 31, 2024. The need to establish valuation allowances for deferred assets is based on a more-likely-than-not threshold that the benefit of such assets will be realized in future periods. Appropriate consideration has been given to all available evidence, including historical operating results, projections of taxable income, and tax planning alternatives. The Company concluded that a $ 0.4 million valuation allowance was required for tax attributes related to specified state jurisdictions, a $ 1.0 million valuation allowance was required for tax attributes related to capital loss carryforwards, and an additional $ 8.1 million valuation allowance is required against our U.S. foreign tax credit carryforwards. The total amount of unrecognized tax benefits as of December 31, 2024 and 2023 was $ 25.8 million and $ 24.1 million, respectively, which includes $ 15.0 million and $ 9.0 million, respectively, of tax positions that, if recognized, would impact the effective rate. The unrecognized tax benefits and the related accrued interest are part of other long-term liabilities on the Company’s consolidated balance sheets. The components of unrecognized tax benefits, excluding penalty and interest, are as follows at December 31: 2024 2023 U.S. transfer pricing $ — $ 145 India transfer pricing — 164 Section 41 tax credit 15,042 8,736 Section 174 expense capitalization 10,798 15,086 Total $ 25,840 $ 24,131 The unrecognized tax benefit reconciliation, excluding penalty and interest, is as follows: Unrecognized tax benefits at January 1, 2022 $ 450 Decrease attributable to tax positions taken during the current period ( 305 ) Unrecognized tax benefits at December 31, 2022 145 Increase attributable to tax positions taken during a prior period 19,845 Increase attributable to tax positions taken during the current period 4,141 Unrecognized tax benefits at December 31, 2023 24,131 Decrease attributable to tax positions taken during a prior period ( 4,597 ) Increase attributable to tax positions taken during the current period 6,306 Unrecognized tax benefits at December 31, 2024 25,840 The Company’s 2021, 2022, and 2023 tax years remain subject to examination by the Internal Revenue Service for federal tax purposes. Certain significant state and foreign tax jurisdictions are also either currently under examination or remain open under the statutes of limitation and subject to examination for the tax years from 2020, 2021, 2022, and 2023 . Although the Company believes it has adequately provided for all uncertain tax positions, amounts asserted by taxing authorities could be greater than the Company’s accrued position. Accordingly, additional provisions on federal, state, and foreign income tax related matters could be recorded in the future as revised estimates are made or the underlying matters are effectively settled or otherwise resolved. Conversely, the Company could settle positions with the tax authorities for amounts lower than have been accrued. The Company believes it is reasonably possible that, during the next 12 months, the Company’s liability for uncertain tax positions may not change. The Company’s provision for income taxes differs from the federal statutory rate. The differences between the statutory rate and the Company’s provision are as follows for the years ended December 31: 2024 2023 2022 Taxes at statutory rate 21.0 % 21.0 % 21.0 % State taxes, net of federal benefit 6.0 % 6.0 % 5.8 % Foreign tax rate differential ( 0.1 )% ( 0.2 )% 0.1 % Executive compensation 1.8 % 1.7 % 2.2 % Other permanent differences ( 0.4 )% ( 0.3 )% 2.0 % Global intangible low-taxed income (GILTI) — 0.3 % — Prior year tax adjustments ( 2.0 )% ( 6.4 )% ( 1.1 )% Deferred impact of state rate change 0.1 % 0.5 % 0.6 % Worthless stock deduction — ( 5.1 )% ( 4.6 )% Unrecognized tax benefits 4.0 % 9.0 % ( 0.4 )% Capital loss — ( 3.8 )% — Valuation allowance 1.3 % 2.0 % 0.7 % Equity-based compensation ( 1.7 )% ( 1.1 )% ( 1.3 )% Tax credits ( 9.8 )% ( 9.2 )% ( 1.5 )% Taxes at effective rate 20.2 % 14.4 % 23.5 % During 2023, the Company restructured the ownership of its Canadian entities for tax purposes resulting in a 3.8 % decrease in the Company’s effective income tax rate for the year ended December 31, 2023. During 2023, the Company liquidated one of its U.K. subsidiaries as part of the wind-down of its commercial marketing business resulting in a reduction in the Company’s effective income tax rate of 5.1 % for the year ended December 31, 2023. During 2024 and 2023, the Company completed its annual true-up of the prior year income tax provision in connection with the filing of its U.S. federal & state income tax returns. As a result of that process, the Company recorded changes in the estimate of certain tax credits it is eligible to claim with its income tax return filings tha t resulted in decreases of 2.0 % and 6.4 %, respectively, in the Company’s effective income tax rates for the years ended D ecember 31, 2024 and 2023.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2024
Stockholders' Equity Note [Abstract]
Stockholders' Equity	NOTE 14 - STOCKHOLDERS ’ EQUITY Accumulated Other Comprehensive Loss Accumulated other comprehensive (loss) income included the following: Foreign Changes in (1)(2) Total Accumulated other comprehensive (loss) income at January 1, 2022 $ ( 8,759 ) $ ( 2,276 ) $ ( 11,035 ) Current period other comprehensive income (loss): Other comprehensive income (loss) before reclassifications ( 9,259 ) 11,445 2,186 Amounts reclassified from accumulated other comprehensive (loss) income — ( 248 ) ( 248 ) Effect of taxes (3) 3,962 ( 2,998 ) 964 Total current period other comprehensive income (loss) ( 5,297 ) 8,199 2,902 Accumulated other comprehensive (loss) income at December 31, 2022 ( 14,056 ) 5,923 ( 8,133 ) Current period other comprehensive income (loss): Other comprehensive (loss) income before reclassifications 4,158 ( 45 ) 4,113 Amounts reclassified from accumulated other comprehensive (loss) income — ( 6,982 ) ( 6,982 ) Effect of taxes (3) ( 2,797 ) 1,914 ( 883 ) Total current period other comprehensive income (loss) 1,361 ( 5,113 ) ( 3,752 ) Accumulated other comprehensive (loss) income at December 31, 2023 ( 12,695 ) 810 ( 11,885 ) Current period other comprehensive income (loss): Other comprehensive income (loss) before reclassifications ( 3,884 ) 5,996 2,112 Amounts reclassified from accumulated other comprehensive (loss) income (4) — ( 6,244 ) ( 6,244 ) Effect of taxes (3) 196 75 271 Total current period other comprehensive income (loss) ( 3,688 ) ( 173 ) ( 3,861 ) Accumulated other comprehensive (loss) income at December 31, 2024 $ ( 16,383 ) $ 637 $ ( 15,746 ) (1) 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 through June 27, 2028. See additional details of the hedge agreements in Note 12 - Derivative Instruments and Hedging Activities. (2) The Company expects to reclassify $ 0.8 million in unrealized gains related to the Change in Fair Value of Interest Rate Hedge Agreement from accumulated other comprehensive loss into earnings during the next 12 months. (3) The Company’s effective tax rate for the years ended December 31, 2024, 2023, and 2022 was 20.2 % , 14.4 % , and 23.5 % , respectively. Share Repurchases The Company’s current approved share repurchase program allows for share repurchases in the aggregate up to $ 300.0 million under approved share repurchase plans pursuant to Rules 10b5-1 and 10b-18 under the Exchange Act. The repurchase program and the authorized amount have no expiration date. On an annual basis, the Credit Facility (see Note 10 – Long-Term Debt) permits share repurchases of at least $ 25.0 million provided that the Company is not in default of its covenants, and higher amounts provided that the Company’s Consolidated Leverage Ratio, prior to and after giving effect to such repurchases, is 0.50 to 1.00 less than the then-applicable maximum Consolidated Leverage Ratio and subject to the Company having net liquidity of at least $ 100.0 million after giving effect to such repurchases. 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. The timing and extent to which the Company repurchases its shares will depend on market conditions and other corporate considerations in the Company’s sole discretion. For the years ended December 31, 2024 and 2023, the Company used $ 44.4 million to repurchase 327,321 shares at an average price of $ 135.77 per share and $ 18.1 million to repurchase 180,000 shares at an average price of $ 100.70 per share, respectively, under this program. As of December 31, 2024, approximately $ 149.3 million of authority remained available under the share repurchase plan. Employee Stock Purchase Plan The Company has an Employee Stock Purchase Plan (“ESPP”) under which one million shares have been authorized for issuance. The ESPP allows eligible employees to purchase shares of the Company’s common stock through payroll deductions up to $ 25,000 per calendar year, per Internal Revenue Services rules, over six-month offering periods at a discount not to exceed 5 % of the market value on the date of each purchase period, and therefore the Company does not have any compensation expense related to the ESPP. For the years ended December 31, 2024 and 2023, employees purchased a total of 40,987 and 36,140 shares at an average purchase price of $ 125.20 and $ 121.96 , respectively. At December 31, 2024 and 2023, there were 507,845 and 548,832 shares remaining available for future issuance under this plan.

Stock-based Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Stock-based Compensation	NOTE 16 - STOCK-BASED COMPENSATION Stock Incentive Plans On June 1, 2023, the Company’s stockholders approved an amendment and restatement of the 2018 Omnibus Plan (the “2018 A&R Omnibus Plan”) which increased the number of shares available for issuance to 2,050,000 shares using stock options, stock appreciation rights, restricted stock, RSUs, performance units and PSAs, cash-based awards, and other stock-based awards to all key officers, key employees, and non-employee directors of the Company. As of December 31, 2024, the Company had approximately 1,016,040 shares available for grant under the A&R 2018 Omnibus Plan. Stock-based compensation expense is included as part of direct costs and indirect and selling expenses on the consolidated statements of comprehensive income. The total stock-based compensation expense for the years ended December 31, 2024, 2023, and 2022, the unrecognized compensation expense at December 31, 2024, and the weighted-average period to recognize the remaining unrecognized shares are as follows: Stock-Based Compensation Expense Recognized Unrecognized 2024 2023 2022 2024 Weighted Restricted Stock Units $ 10,654 $ 9,413 $ 9,300 $ 13,910 1.5 Cash-Settled Restricted Stock Units 8,341 8,061 5,709 7,648 1.3 Non-Employee Director Awards 972 1,029 1,087 408 0.4 Performance Shares 5,096 4,416 2,784 5,177 1.4 Total $ 25,063 $ 22,919 $ 18,880 $ 27,143 The stock-based compensation expense is deductible for income tax purposes. For the years ended December 31, 2024, 2023, and 2022, the Company recognized excess income tax benefits of $ 2.4 million , $ 1.1 million , and $ 1.1 million , respectively, related to stock-based compensation. Restricted Stock Units RSUs generally have a vesting term of three years . On vesting the employee is issued one share of stock for each RSU awarded. The fair value of shares vested was $ 10.3 million , $ 7.3 million , and $ 10.8 million for the years ended December 31, 2024, 2023, and 2022, respectively. A summary of the Company’s RSUs is presented below. Number of Weighted- Aggregate Non-vested RSUs at January 1, 2022 303,836 $ 79.17 Granted 148,361 $ 93.70 Vested ( 140,666 ) $ 76.53 Cancelled ( 26,705 ) $ 77.16 Non-vested RSUs at December 31, 2022 284,826 $ 88.23 Granted 89,388 $ 110.80 Vested ( 93,881 ) $ 78.05 Cancelled ( 21,815 ) $ 94.01 Non-vested RSUs at December 31, 2023 258,518 $ 99.25 Granted 86,428 $ 153.22 Vested ( 107,168 ) $ 95.65 Cancelled ( 26,807 ) $ 109.79 Non-vested RSUs at December 31, 2024 210,971 $ 121.86 $ 25,150 RSUs expected to vest in the future 192,949 $ 120.99 $ 23,002 The aggregate intrinsic value in the preceding table is based on the Company’s closing stock price of $ 119.21 per share as of December 31, 2024. Cash-Settled Restricted Stock Units CSRSUs generally have a vesting term of three years . The fair value of CSRSUs vested and settled in cash for the years ended December 31, 2024, 2023, and 2022 was $ 7.8 million , $ 7.9 million and $ 6.6 million , respectively. A summary of the Company’s CSRSUs is presented below. Number of Weighted- Aggregate Non-vested CSRSUs at January 1, 2022 166,260 $ 72.79 Granted 115,024 $ 97.88 Vested ( 75,566 ) $ 73.20 Cancelled ( 17,299 ) $ 80.02 Non-vested CSRSUs at December 31, 2022 188,419 $ 87.28 Granted 70,742 $ 110.65 Vested ( 81,537 ) $ 76.26 Cancelled ( 19,040 ) $ 91.94 Non-vested CSRSUs at December 31, 2023 158,584 $ 102.82 Granted 38,653 $ 153.15 Vested ( 58,078 ) $ 99.30 Cancelled ( 9,424 ) $ 114.93 Non-vested CSRSUs at December 31, 2024 129,735 $ 118.51 $ 15,466 CSRSUs expected to vest in the future 117,615 $ 117.55 $ 14,021 The aggregate intrinsic value in the preceding table is based on the Company’s closing stock price of $ 119.21 per share as of December 31, 2024. Non-Employee Director Awards The Company grants awards of registered shares to its non-employee directors on an annual basis under the A&R Omnibus Plan. A summary of the non-employee director awards is presented below: Number of Weighted- Aggregate Non-vested RSUs at January 1, 2022 5,586 $ 90.73 Granted 11,399 $ 95.35 Vested ( 11,637 ) $ 93.39 Cancelled — $ — Non-vested RSUs at December 31, 2022 5,348 $ 94.79 Granted 8,211 $ 127.81 Vested ( 9,457 ) $ 109.14 Cancelled — $ — Non-vested RSUs at December 31, 2023 4,102 $ 127.81 Granted 6,618 $ 135.91 Vested ( 7,414 ) $ 131.43 Cancelled — $ — Non-vested RSUs at December 31, 2024 3,306 $ 135.91 $ 394 RSUs expected to vest in the future 3,306 $ 135.91 $ 394 The aggregate intrinsic value in the preceding table is based on the Company’s closing stock price of $ 119.21 per share as of December 31, 2024. Performance Share Awards In 2015, the Board approved a performance-based share program (the “Program”) that provides for the issuance of PSAs to its senior management. Under the Program, the number of PSAs that the participant will receive depends on the Company’s achievement of two performance goals during two performance periods. The performance goals under the Program are based on (i) the Company’s compounded annual growth rate in EPS (adjusted to exclude certain items specified in the award’s agreement) during a two-year performance period (the “Initial Period”) and (ii) the Company’s cumulative total shareholder return relative to its peer group (“rTSR”) during a performance period from the first day of the performance period (typically January 1 of the year awarded) to the last day of the third year of the performance period (typically December 31). The PSAs will only be eligible to vest following the expiration of the three-year performance period. The actual shares vested will be subject to both continued employment by the Company (barring certain exceptions allowing for partial performance periods) and actual financial measures achieved. The final number of shares of common stock that will be issued to each participant at the end of t he applicable performance period will be determined by multiplying the award by the product of two percentages: the first based on the Company’s EPS performance and the second based on the Company’s rTSR performance, subject to a minimum and maximum performance level. As of December 31, 2024 , shares granted during 2022, 2023, and 2024 are within year three , two , and one of the performance periods, respectively, and therefore have not fully vested. A total of 46,630 shares granted in 2021 vested during 2024 after meeting the performance goals. As of December 31, 2024, a total of 59,863 shares granted in 2022 and 2023 are expected to vest in the future based on estimated financial measures achieved in the Initial Period and rTSR performance. A summary of the Company’s PSAs is presented below. Number of Weighted- Aggregate Non-vested PSAs at January 1, 2022 133,079 $ 76.54 Granted 38,412 $ 93.15 Vested ( 47,634 ) $ 82.38 Cancelled ( 3,170 ) $ 80.64 Non-vested PSAs at December 31, 2022 120,687 $ 79.42 Granted 36,956 $ 115.67 Vested ( 45,141 ) $ 58.76 Cancelled ( 6,934 ) $ 61.49 Non-vested PSAs at December 31, 2023 105,568 $ 102.12 Granted 41,365 $ 143.97 Vested ( 46,630 ) $ 95.72 Cancelled ( 4,198 ) $ 114.91 Non-vested PSAs at December 31, 2024 96,105 $ 122.68 $ 11,457 PSAs expected to vest in the future 59,863 $ 138.01 $ 7,136 The aggregate intrinsic value in the preceding table is based on the Company’s closing stock price of $ 119.21 per share as of December 31, 2024. The fair value of the awards is estimated on the grant date using a Monte Carlo simulation model due to the market condition for the rTSR component. The fair value assumptions using the Monte Carlo simulation model for awards granted in 2024, 2023, and 2022 were: 2024 2023 2022 Dividend Yield 0.4 % 0.5 % 0.6 % Historical Volatility 29.3 % 33.6 % 39.0 % Risk-Free Rate of Returns 4.4 % 3.8 % 2.1 %

Acquisition and Divestiture

Acquisition and Divestiture	12 Months Ended
	Dec. 31, 2024
Business Combinations [Abstract]
Acquisitions and Divestitures	NOTE 17 – ACQUISITIONS AND DIVESTITURES Acquisitions Applied Energy Group, Inc. On December 31, 2024 , the Company completed the acquisition of Applied Energy Group, Inc. ( “AEG”), an energy technology and advisory services company , for $ 60.7 million in cash consideration. The purchase price is subjected to net working capital adjustments expected to be completed within ninety days. AEG provides a suite of integrated technology and advisory solutions to electric and gas utilities, state and local governments, and state energy offices nationwide which will further enhance the Company’s service offering and client footprint. As part of the preliminary allocation of the purchase consideration, the Company recorded the following: Net working capital $ 4,049 Property and equipment 55 Customer-related intangibles 21,000 Developed technology 5,000 Trade names and trademarks 350 Goodwill 30,200 Purchase considerations $ 60,654 Net working capital includes restricted cash of $ 5.6 million, accounts receivable of $ 4.5 million, and accrued expenses of $ 5.7 million. The finalization of allocation is expected to be completed by the second quarter of 2025, and is currently open primarily for final net working capital adjustments, valuation of acquired intangibles, and computation of deferred revenue. The estimated useful lives of acquired intangible assets are as follows: Customer-related intangibles 9.0 years Developed technology 6.0 years Trade names and trademarks 1.0 year The goodwill is attributable to the workforce of AEG and expected synergies with the Company. Goodwill has an indefinite life, and is deductible for income tax purposes. The pro-forma impact of the acquisition is not material to the Company’s results of operations. CMY Solutions, LLC On May 1, 2023 , the Company acquired CMY Solutions, LLC (“CMY”), a privately-held company that provides engineering and automation solutions to utilities and organizations, for $ 32.6 million in cash. The acquisition enhances the Company’s offerings in the field of power and energy advisory services. As part of the allocation of purchase consideration, the Company recorded the following: Net working capital $ 1,169 Customer-related intangibles 9,900 Trade names and trademarks 100 Goodwill 21,366 Purchase considerations $ 32,535 The estimated useful lives of acquired intangible assets are as follows: Customer-related intangibles 5 years Trade names and trademarks 1 year Goodwill has an indefinite life and is deductible for income tax purposes. The pro-forma impact of the acquisition is not material to the Company’s results of operations. Blanton & Associates On September 1, 2022, the Company completed the acquisition of Blanton & Associates (“Blanton”), an environmental consulting, planning, and project management firm headquartered in Austin, Texas, for $ 22.9 million. Blanton brought domain expertise in environmental regulatory compliance and permitting for the transportation, renewable energy, water, and resource management sectors and added technically specialized staff in all aspects of environmental services to the Company. As part of the allocation of the purchase consideration, the Company recorded the following: Net working capital $ 4,604 Property and equipment 159 Customer-related intangibles 10,919 Contract backlog 466 Trade names and trademarks 60 Goodwill 9,712 Deferred income tax liabilities ( 3,023 ) Purchase consideration $ 22,897 The estimated useful lives of acquired intangible assets are as follows: Customer-related intangibles 11 years Contract backlog 3 years Trade names and trademarks 0.3 year Goodwill has an indefinite life and is not deductible for income tax purposes. The pro-forma impact of the acquisition is not material to the Company’s results of operations. SemanticBits, LLC On July 13, 2022, the Company completed the acquisition of SemanticBits, LLC (“SemanticBits”), a 450-person Virginia limited liability company. SemanticBits is a partner to U.S. federal health agencies for mission-critical digital modernization solutions and provides a suite of scalable digital modernization services using open-source frameworks, including end-to-end agile scale development capabilities, cloud-native solutions, data analytics and human-centered designs. The acquisition provides synergies and scalabilities to support federal agencies with advanced IT solutions, digital modernization, and health expertise to solve complex customer challenges. The purchase price was $ 216.0 million in cash and was funded by the existing Credit Facility. The final purchase price allocation is summarized as follows: Contract receivables $ 12,699 Contract assets 6,071 Customer-related intangibles 62,967 Trade names and trademarks 1,120 Other current and non-current assets 407 Accrued salaries and benefits ( 3,998 ) Accrued expenses and other liabilities ( 6,244 ) Deferred tax liability ( 16,701 ) Net assets acquired 56,321 Goodwill 159,677 Purchase consideration $ 215,998 The estimated useful lives of acquired intangible assets are as follows: Customer-related intangibles 4.0 years Trade names and trademarks 0.7 year Goodwill is reflective of the existing workforce of SemanticBits and the expected synergies created with the Company as part of the acquisition. Goodwill and intangible assets are not deductible for income tax purposes. Acquisition-related costs and integration costs totaled $ 4.3 million and are included as part of indirect and selling expenses in the Company’s consolidated statements of comprehensive income. For the year ended December 31, 2022, SemanticBits contributed revenues of $ 64.3 million and gross profit of $ 26.7 million. Computation of an earnings measure other than gross profit is impracticable due to SemanticBits’ operations and financial systems being integrated with those of the Company. The following unaudited condensed pro forma information presents combined financial information as if the acquisition of SemanticBits had been effective at January 1, 2021, the beginning of the 2021 fiscal year, and as a result, fiscal year 2022 represents the pro forma results for year two of the acquisition. The pro forma information includes alignment of SemanticBits’ revenue recognition policy, corrections of employee-related expenses, and adjustments reflecting changes in the amortization of intangibles, acquisition-related costs, interest expense, and records income tax effects as if SemanticBits had been included in the Company’s results of operations. (Unaudited) Year Ended 2022 Revenue $ 1,856,399 Net income 75,999 The pro forma information is not intended to reflect the actual combined results of operations that would have occurred if the acquisition was completed on January 1, 2021, nor is it indicative of future operating results after the acquisition date of July 13, 2022. Divestitures Commercial Marketing On September 12, 2023 , the Company completed the divesture of its U.S. commercial marketing business for $ 47.1 million in cash. The disposal of the commercial marketing business was not a major strategic shift that was, or will be significant to the Company’s operations and financial results. For the years ended December 31, 2024 and 2023 , the Company recorded pre-tax gain of $ 2.0 million and $ 2.5 million, that is included as part of other income on the Company’s consolidated statements of comprehensive income. Mobile and SMS Messaging Aggregator Business On November 1, 2023, the Company completed the divesture of its Canadian mobile and Short Message Service (“SMS”) messaging aggregator business for $ 5.4 million in cash. The disposal of the mobile aggregation and SMS messaging aggregator business was not a major strategic shift that was, or will be, significant to the Company’s operations and financial results. In connection with the sale, the Company recorded a pre-tax gain of $ 3.2 million that is included as part of other income on the Company’s consolidated statements of comprehensive income.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 18 - EARNINGS PER SHARE The Company’s 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 December 31, 2024, the PSAs granted during the year ended December 31, 2022 and 2023 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, 2024 have not yet completed their initial two-year performance period and therefore were excluded in the calculation of diluted EPS. The dilutive effect of stock options, RSUs, and performance shares for each period reported is summarized below: 2024 2023 2022 Net Income $ 110,170 $ 82,612 $ 64,243 Weighted-average number of basic shares outstanding during the period 18,747 18,802 18,818 Dilutive effect of stock options, RSUs, and performance shares 178 192 215 Weighted-average number of diluted shares outstanding during the period 18,925 18,994 19,033 Basic earnings per share $ 5.88 $ 4.39 $ 3.41 Diluted earnings per share $ 5.82 $ 4.35 $ 3.38

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value	NOTE 13 - FAIR VALUE Financial instruments measured at fair value on a recurring basis and their location within the accompanying consolidated financial statements are as follows: December 31, 2024 Level 1 Level 2 Level 3 Total Location on Balance Sheet Assets: Interest rate swaps - current portion $ — $ 825 $ — $ 825 Prepaid expenses and other assets Interest rate swaps - long-term portion — 129 — 129 Other assets Company-owned life insurance policies — 23,174 — 23,174 Other assets Liabilities: Interest swaps - current portion $ — $ 15 $ — $ 15 Accrued expenses and other current liabilities Interest swaps - long-term portion — 153 — 153 Other long-term liabilities December 31, 2023 Level 1 Level 2 Level 3 Total Location on Balance Sheet Assets: Interest rate swaps - current portion $ — $ 4,820 $ — $ 4,820 Prepaid expenses and other assets Foreign currency forward and swap contracts — 6 — 6 Prepaid expenses and other assets Interest rate swaps - long-term portion — 398 — 398 Other assets Company-owned life insurance policies — 20,438 — 20,438 Other assets Financial and non-financial instruments measured or remeasured at fair value on a non-recurring basis include certain impaired right-of-use assets from operating leases and assets acquired and liabilities assumed from acquisitions, using the discounted cash flows method with Level 3 inputs as of the impairment and acquisition dates.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 19 - COMMITMENTS AND CONTINGENCIES Letters of Credit and Guarantees At December 31, 2024 and 2023, the Company had open standby letters of credit totaling $ 1.6 million and $ 1.8 million , respectively, and guarantees of $ 8.2 million and $ 7.9 million issued by its banks. The letters of credit and guarantees were primarily for the Company’s facility leases and contract performance obligations. The open standby letters of credit reduce the Company’s unused borrowing capacity under its Credit Facility. 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 it is not reasonably possible that any ultimate liability arising out of these matters and proceedings will have a material adverse effect on the Company’s financial position, results of operations, or cash flows.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Employee Benefit Plans	NOTE 20 - EMPLOYEE BENEFIT PLANS Defined Contribution Plan Effective June 30, 1999, the Company established the ICF Consulting Group Retirement Savings Plan (the “Retirement Savings Plan”). The Retirement Savings Plan is a defined contribution profit sharing plan with a cash or deferred arrangement under Section 401(k) of the Internal Revenue Code. Participants are able to elect to defer up to 70 % of their compensation, subject to statutory limitations, and are entitled to receive 100 % employer matching contributions for the first 3 % and 50 % for the next 2 % of their compensation. Contribution expense for the years ended December 31, 2024, 2023, and 2022 was $ 26.8 million , $ 25.4 million , and $ 22.9 million , respectively. Deferred Compensation Plan Certain key employees of the Company are eligible to defer a specified percentage of their cash compensation by having it contributed to a nonqualified deferred compensation plan. Eligible employees may elect to defer up to 80 % of their base salary and up to 100 % of performance bonuses, reduced by any amounts withheld for the payment of taxes or other deductions required by law. Participants are always 100 % vested in their account balances. The Company funds its deferred compensation liabilities by making cash contributions to a Rabbi Trust (the “Trust”) at the time the salary or bonus being deferred would otherwise be payable to the employee. As of December 31, 2024 , the liability to plan participants was $ 24.3 million which was materially funded by assets in the Trust. The deferred compensation plan does not have a material net impact on the Company’s results of operations.

Exit Activities

Exit Activities	12 Months Ended
	Dec. 31, 2024
Restructuring and Related Activities [Abstract]
Exit Activities	NOTE 21 - EXIT ACTIVITIES During the year ended December 31, 2023, the Company incurred and paid $ 2.5 million in retention and severance benefits related to the wind-down of its non-core commercial marketing and communication businesses in the U.K. and Belgium. The exit activity was completed as of December 31, 2023 . During the year ended December 31, 2023, the Company completed the divestitures of its non-core U.S. commercial marketing and Canadian mobile and SMS messaging aggregator businesses . As a result of the divestitures, the Company incurred and paid retention and severance benefits of $ 1.9 million and $ 1.7 million for the years ended December 31, 2023 and 2022, respectively, which was primarily recorded within direct costs. As part of the sale of the businesses, the Company incurred $ 0.6 million in related compensation expense which was recorded within indirect and selling expenses. As a result of these wind-down and divestitures that were completed, the Company recorded impairment of $ 0.9 million related to a customer-related intangible from a prior acquisition, $ 3.0 million related to right-of-use operating leases, and accrued $ 2.4 million for other facility-related exit costs. During the year ended December 31, 2022, the Company incurred charges related to: (i) the reduction and wind-down of certain non-core U.S. commercial marketing businesses, and (ii) the reduction of facilities utilized by the remaining elements of the commercial marketing group. Specifically, these charges included the impairment of certain right-of-use operating leases and related assets associated with exited facilities of $ 8.2 million, $ 4.8 million in other facility-related exit costs recorded within indirect and selling expenses, and retention and severance of $ 2.3 million primarily recorded within direct costs. Of the $ 2.3 million in retention and severance benefits, $ 1.3 million was paid during the 2022 fiscal year and the remaining liability was paid during the 2023 fiscal year.

Segment Information and Geograp

Segment Information and Geographic Data	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Segment Information and Geographic Data	NOTE 22 - SEGMENT INFORMATION AND GEOGRAPHIC DATA The Company provides a broad array of professional services to its clients across several markets, primarily within the U.S. The Company operates as a single reportable and operating segment because the CODM, which is the Chief Executive Officer , manages the business activities on a consolidated basis. Although the Company disaggregates its revenue by client market and client type, it does not manage its business or allocate resources based on client market or type. The CODM assesses performance of the segment based on consolidated net income that is reported on the Company’s consolidated statements of comprehensive income. The CODM uses consolidated net income to evaluate the Company’s performance against budgets and decide whether to use the profits to invest in the business, paydown debt, repurchase stock, pay dividends, or fund acquisitions. Asset information provided to the CODM is not used for the purposes of making decisions and assessing performance of the Company. The segment revenue, significant segment expenses, and segment profit are as follows: Year ended December 31, 2024 2023 2022 Revenue $ 2,019,787 $ 1,963,238 $ 1,779,964 Significant segment expenses: Direct labor & related fringe costs 775,239 730,322 639,861 Subcontractors & other direct costs 506,777 534,696 494,561 Indirect and selling expenses 518,453 505,162 486,863 Depreciation and amortization 20,484 25,277 21,482 Amortization of intangible assets 32,992 35,461 28,435 Interest expense 29,878 39,952 23,525 Provision for income taxes 27,888 13,935 19,737 Other segment (income) expense (1) ( 2,094 ) ( 4,179 ) 1,257 Net Income $ 110,170 $ 82,612 $ 64,243 (1) Other segment income (expenses) includes interest income, foreign currency expense, and gains/losses on disposition of assets. Other Segment Information and Geographic Data Revenue is attributed to the country where the contract is awarded by the client. There was no single foreign country that individually accounted for 10% or more of total revenue for the years ended December 31, 2024, 2023, and 2022 . The following table provide net revenue for the Company ’s home country and foreign countries: Year ended December 31, 2024 2023 2022 Revenue: U.S. $ 1,869,105 $ 1,832,562 $ 1,644,737 Other countries 150,682 130,676 135,227 Total revenue $ 2,019,787 $ 1,963,238 $ 1,779,964 At December 31, 2024 and 2023, long-lived assets were primarily held in the U.S. There was no single foreign country that individually held more than 10% of the total long-lived assets. The following table provide long-lived assets held in the Company’s home country and in foreign countries: December 31, 2024 2023 Long-lived assets: U.S. $ 65,045 $ 71,791 Other countries 3,073 4,157 Total long-lived assets $ 68,118 $ 75,948

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2024
Subsequent Events [Abstract]
Subsequent Events	NOTE 23 - SUBSEQUENT EVENTS As of February 25, 2025, the Company repurchased 258,218 shares at a total cost of $ 30.5 million , or $ 118.14 per share pursuant to the Plan authorized by the Company's board of directors (see Note 14 - Stockholders’ Equity - Share Repurchases). Subsequent to December 31, 2024, and through February 25, 2025, pursuant to the recent executive orders issued by the Administration or actions by DOGE, the Company received notices for termination-for-convenience of approximately $ 276 million and for stop-work orders of approximately $ 99 million.

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	Schedule II - Valuation and Qualifying Accounts Allowance for Credit Losses 2024 2023 2022 Balance at beginning of period $ 5,435 $ 6,112 $ 7,741 Provision for credit losses 1,673 1,164 248 Write-offs, net of recoveries ( 357 ) ( 1,886 ) ( 1,782 ) Effect of foreign currency translation ( 50 ) 45 ( 95 ) Balance at end of period $ 6,701 $ 5,435 $ 6,112 Income Tax Valuation Allowance 2024 2023 2022 Balance at beginning of period $ 9,021 $ 7,607 $ 7,048 Provision for income taxes - valuation allowance 606 1,414 559 Balance at end of period $ 9,627 $ 9,021 $ 7,607

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2024
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. Intercompany transactions and balances have been eliminated. Certain amounts reported in the previous year's consolidated statements of cash flows have been combined to conform to the current year presentation.
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 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 and divestitures, impairment of long-lived assets, accrued liabilities, revenue recognition (including estimates of variable considerations in determining the total contract price and allocation of performance obligations), the remaining 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.
Revenue Recognition	Revenue Recognition The Company enters into agreements with clients that create enforceable rights and obligations and for which it is probable that the Company will collect the consideration to which it will be entitled as services and solutions are transferred to the client. Except in certain narrowly defined situations, the Company’s agreements with its clients are written and revenue is generally not recognized on oral or implied arrangements. The Company recognizes revenue based on the consideration specified in the applicable agreement and excludes payments to customers and amounts collected on behalf of third parties. Accordingly, sales and similar taxes which are collected on behalf of third parties are excluded from the transaction price. The Company evaluates whether two or more agreements should be accounted for as one single contract and whether combined or single agreements should be accounted for as more than one performance obligation. For most contracts, the client requires the Company to perform a number of tasks in providing an integrated output for which the client has contracted, and, hence, contracts of this type are tracked as having only one performance obligation since a substantial part of the Company’s promise is to ensure the individual tasks are incorporated into a combined output in accordance with contract requirements. When contracts have multiple performance obligations, the Company allocates the total transaction price to each performance obligation based on the estimated relative standalone selling prices of the promised services underlying each performance obligation. The Company generally provides customized solutions in which the pricing is based on specific negotiations with each client, and, in these cases, the Company uses a cost-plus margin approach to estimate the standalone selling price of each performance obligation. Certain contracts contain award fees, incentive fees or other provisions that can either increase or decrease the transaction price. These variable amounts are generally awarded at the completion of a contractually stipulated performance assessment period based on the achievement of performance metrics, program milestones or cost targets, and the amount awarded may be subject to client discretion. Variable consideration is estimated based on the most likely amount. Once the Company selects a method to estimate variable consideration, it applies that method consistently. Estimates of variable consideration will be constrained only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur. The Company evaluates contractual arrangements to determine whether revenue should be recognized on a gross versus net basis. The Company’s assessment is based on the nature of the contractual obligation to the client. In most cases, the Company itself agrees to provide specified services to the client as a principal and revenue is recognized on a gross basis. In certain instances, the Company acts as an agent and merely arranges for another party to provide services to the client and revenue is recognized on a net basis in reflection of the fact that the Company does not control the goods or services provided to the client by the other party. Long-term contracts typically contain billing terms that provide for invoicing monthly or upon completion of milestones, and payment on a net 30 -day basis. Therefore, the timing of billings and cash receipts may differ from the timing of revenue recognition resulting in either contract assets or contract liabilities. Exceptions to monthly billing terms are to ensure that the Company performs satisfactorily rather than representing a significant financing component. For cost-based contracts, the Company’s performance is evaluated during a contractually-stipulated performance period and, while contract costs may be billed on a monthly basis, the Company is generally permitted to bill for incentive or award fees only after the completion of the performance assessment period, which may occur quarterly, semi-annually or annually, and after the client completes the performance assessment. Fixed-price contracts may provide for milestone billings based on the attainment of specific project objectives rather than for billing on a monthly basis. Moreover, contracts may require retention or hold backs that are paid at the end of the contract to ensure that the Company performs in accordance with requirements. The Company does not assess whether a contract contains a significant financing component if the Company expects, at contract inception, that the period between payment by the client and the transfer of promised services to the client will be one year or less. The Company generally recognizes revenue over time as control is transferred to a client, based on the extent of progress towards satisfaction of the performance obligation. The selection of the method used to measure progress requires judgment and is dependent, among other factors, on the contract type and the nature of the services provided. For time-and-materials contracts, the Company uses the right-to-invoice practical expedient to recognize revenue earned based on hours worked in contract performance at negotiated billing rates. Fixed-price level-of-effort contracts are substantially similar to time-and-materials contracts except that the Company is required to deliver a specified level of effort over a stated period of time. For these contracts, the Company determines the revenue earned using contract hours worked at negotiated bill rates as the Company delivers the contractually required workforce. For certain cost-based contracts that meet the criteria for the right-to-invoice practical expedient to be used, the Company recognizes revenue based on the amount to which the Company has a contractual right to invoice which is typically costs incurred plus contractually-stipulated fixed fees. Cost-based contracts may include variable consideration which is allocated to the distinct periods in which they relate to and recognized in that period. For series-services performance obligations, the Company measures progress using either a cost input measure, a time-elapsed output measure, or the right to invoice practical expedient. For certain fixed-price contracts, the Company uses the percentage-of-completion method to estimate the amount of revenue, based on the ratio of actual costs incurred to total estimated costs, provided that costs incurred (an input method) represents a reasonable measure of progress towards the satisfaction of a performance obligation and transfer of control to the customer. This method provides a faithful depiction of the transfer of value to the client when the Company is satisfying a performance obligation that entails integration of tasks for a combined output, which requires the Company to coordinate the work of employees, subcontractors and delivery of other contract costs. Contract costs that are not reflective of the Company’s progress toward satisfying a performance obligation are not included in the calculation of the measure of progress. When this method is used, the changes in estimated costs to complete the obligations result in adjustments to revenue on a cumulative catch-up basis, which causes the effect of revised estimates for prior periods to be recognized in the current period. Changes in these estimates may routinely occur over contract performance for a variety of reasons, which include: changes in contract scope; changes in contract cost estimates due to unanticipated cost growth or reassessments of risks impacting costs; changes in estimated incentive or award fees; or performing better or worse than previously estimated. For fixed-price contracts in which the estimated cost to perform exceeds the consideration to be received, the Company accrues for the entire estimated loss during the period in which the loss is determined by recording additional direct costs. In some fixed-price service contracts, the Company performs services of a recurring nature, such as maintenance and other services of a “stand ready” nature. For these contracts, the Company has the right to consideration in an amount that corresponds directly with the value that the client has received. Therefore, the Company records revenue on a time-elapsed basis to reflect the transfer of control to the client throughout the contract. Contracts may be modified to reflect changes in contract specifications and requirements, and these changes may create new enforceable rights and obligations. Modifications that are for services that are not distinct from the existing agreement due to the significant integration service that the Company provides are accounted for as part of an existing performance obligation. The effect of these modifications on the transaction price and the Company’s measure of progress in fulfilling the performance obligation to which they relate is recognized as an adjustment to revenue on a cumulative catch-up basis. Revenue from modifications that create new, distinct performance obligations is recognized based on the Company’s progress in fulfilling the requirements of the new obligations. For performance obligations that are satisfied over time, the Company recognizes the cost to fulfill contracts when incurred, unless the costs are within the scope of another topic in which case the guidance of that topic is applied. The Company evaluates incremental costs of obtaining a contract and, if they are recoverable from the client and relate to a specific future contract, they are deferred and recognized over contract performance or the estimated life of the customer relationship if renewals are expected. The Company expenses these costs when incurred if the amortization period is one year or less. Unfulfilled performance obligations represent amounts expected to be earned on non-cancellable contracts or those that are cancellable, but the Company has determined to have substantive termination penalties, and do not include the value of negotiated, unexercised contract options, which are classified as marketing offers. Indefinite delivery/indefinite quantity and similar arrangements provide a framework for the client to issue specific tasks, delivery or purchase orders in the future and these arrangements are considered marketing offers until a specific order is executed. Some of the Company’s contracts include variable consideration, which requires the Company to estimate and, as necessary, revise the most likely amounts that will be earned over the respective performance assessment periods. For these obligations, changes in estimates result in cumulative catch-up adjustments and may have a significant impact on earnings during a given period. The Company’s operating cycle for long-term contracts may be greater than one year and is measured by the average time between the inception and completion of those contracts. Contract-related assets and liabilities are classified as current assets and current liabilities.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers cash on deposit and any highly liquid investments with original maturities of three months or less when purchased to be cash and cash equivalents.
Restricted Cash	Restricted Cash Restricted cash represents cash that is restricted as to usage due to contractual restrictions.
Contract Receivables, Net	Contract Receivables, Net Contract receivables represent amounts billed and due from clients in accordance with respective contractual terms. The amounts due are stated at their net realizable value. The Company estimates an allowance for expected credit loss to reflect the amount of receivables that will not be collected. The Company considers a number of factors in estimating the amount of the allowance, including knowledge of a client’s financial condition, its historical collection experience, and other factors relevant to assessing the collectability of the receivables. The Company writes off contract receivables when such amounts are determined to be uncollectible.
Property and Equipment	Property and Equipment Property and equipment are carried at cost and are depreciated using the straight-line method over their estimated useful lives, which range from two to seven years . Leasehold improvements are amortized on a straight-line basis over the shorter of the economic life of the improvement or the related lease term.
Goodwill and Indefinite-Lived Assets	Goodwill and Indefinite-Lived Assets Goodwill represents the excess of the purchase consideration over the fair value of net assets of businesses acquired. Goodwill and any intangible assets acquired in a business combination that are deemed to have an indefinite useful life are not amortized, but instead are reviewed for impairment annually, or more frequently if impairment indicators arise. The Company performs its annual goodwill impairment test as of October 1 of each year. As its business is highly integrated and all of its components have similar economic characteristics, the Company has concluded it has one aggregated reporting unit at the consolidated entity level and performs the assessment at that level. The Company has the option to perform a qualitative assessment that determines if it is more likely than not that the estimated fair value of goodwill is greater than its carrying value and, if so, the Company may conclude that there are no indicators of impairment. If the Company concludes that an indicator exists, a quantitative test is performed by comparing the reporting unit’s fair value to the carrying amount and recognizing the difference as an impairment loss.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets The Company reviews its long-lived assets, including property and equipment, operating lease right-of-use (“ROU”) assets, and definite-lived intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amounts of the long-lived asset group may not be fully recoverable. If the total of the expected undiscounted future net cash flows is less than the carrying amount of the long-lived asset group being evaluated, a loss is recognized for any excess of the carrying amount over the fair value of the asset group. During the years ended December 31, 2024, 2023, and 2022 , the Company recognized impairment losses of $ 3.6 million, $ 6.8 million, and $ 8.4 million, respectively, related to operating facility lease right-of-use assets and leasehold improvements that it no longer used in ongoing operations. The impairment losses were included in indirect and selling expenses on the Company’s consolidated statements of comprehensive income.
Leases	Leases The Company leases facilities and property and equipment. The Company determines if an arrangement is a lease at its inception and recognizes a right-of-use asset and obligation for all leases greater than twelve months based on the present value of the future minimum lease payments as of the commencement date, excluding any lease incentives and initial costs incurred to obtain the lease. Since most lease agreements do not provide an implicit rate, the Company uses its incremental borrowing rate as of the commencement date, based on publicly available yields adjusted for company-specific considerations and terms, in estimating the present value of future payments. Lease terms, for the purpose of determining each lease’s present value, include options to extend or terminate the lease if it is reasonably certain and economically reasonable that the Company will exercise that option. Lease costs from minimum lease payments are recognized on a straight-line basis over the lease term. The leases may contain both lease and non-lease components, which are generally accounted for separately. For office equipment leases (primarily copier leases), the Company elected to account for the lease and non-lease components as a single lease component and not recognize right-of-use assets and lease liabilities for leases with a term less than twelve months. Operating leases are included in operating lease right-of-use assets and operating lease liabilities (current and non-current) and finance leases are included in property and equipment, net and finance lease liabilities (current and non-current) on the consolidated balance sheets.
Capitalized Software and Costs of Cloud Computing Arrangements	Capitalized Software and Costs of Cloud Computing Arrangements The Company capitalizes certain costs to develop, enhance, and upgrade internal-use software. Capitalized costs include external direct costs and payroll costs for employees directly associated with such activities. These costs are amortization on a straight-line basis over the expected economic life of the software, typically lasting three to five years . As of December 31, 2024, and 2023, capitalized software, net of accumulated amortization, totaled $ 21.8 million and $ 12.8 million , respectively. The Company capitalizes costs related to the implementation costs of cloud computing arrangements that are service contracts. These costs are amortized over the term of the hosting arrangement. As of December 31, 2024 and 2023, capitalized costs, net of accumulated amortization, totaled $ 2.8 million and $ 2.6 million , respectively. The amounts are included as part of other assets on the consolidated balance sheets.
Stock-Based Compensation	Stock-Based Compensation The Company recognizes stock-based compensation expense to employees and non-employee directors, including grants of stock options, restricted stock awards, restricted stock units (“RSUs”), and cash-settled restricted stock units (“CSRSUs”) on a straight-line basis over the requisite service period, which is generally the vesting period. The Company recognizes expense for performance-based share awards (“PSAs”), which have both performance and service conditions, on a straight-line basis over the three-year performance period. Non-employee director awards are granted annually for Board-related services and therefore expensed over the service period of one year . Stock-based compensation expense is based on the estimated fair value of the instruments on the grant date and the estimated number of shares the Company ultimately expects will vest. The Company estimates the rate of future forfeitures based on factors which include the historical forfeiture experience from the previous 10 years for each applicable employee class. In addition, the estimation of PSAs that will ultimately vest requires judgment based on the performance and market conditions that will be achieved over the performance period. Changes to these estimates are recorded as a cumulative adjustment in the period estimates are revised. The fair value of stock options, restricted stock awards, RSUs, PSAs, and non-employee director awards is estimated based on the fair value of a share of common stock at the grant date. The fair value of PSAs is estimated using a Monte Carlo simulation model. CSRSUs are settled only in cash payments based on the fair value of the Company’s stock price at the vesting date, calculated by multiplying the number of CSRSUs vested by the Company’s closing stock price on the vesting date, subject to a maximum payment cap and a minimum payment floor. The Company treats these awards as liability-classified awards, and, therefore, accounts for them based on the closing price of the Company’s stock at the reporting date.
Derivative Instruments	Derivative Instruments Derivative instruments include interest rate swaps, foreign currency hedges, and forward contracts. Derivative instruments designated as cash flow hedges are recorded on the consolidated balance sheets at fair value as of the reporting date and reclassified to earnings (to the same category as the item being hedged) in the period that the hedged instruments affect earnings, and the effective portion of the hedge is recorded in other comprehensive income (loss) (“AOCI”), net of tax, on the consolidated statements of comprehensive income. Management reviews the effectiveness of the hedges on a quarterly basis.
Income Taxes	Income Taxes The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The Company evaluates its ability to benefit from all deferred tax assets and establishes valuation allowances for amounts it believes will more likely than not be realizable. For uncertain tax positions, the Company uses a more-likely-than-not recognition threshold based on the technical merits of the income tax position taken. Income tax positions that do not meet the more-likely-than-not recognition threshold are measured in order to determine the tax benefit recognized in the financial statements. Penalties, if probable and reasonably estimable, and interest expense related to uncertain tax positions are not recognized as a component of income tax expense but recorded separately in indirect expenses and interest expense, respectively.
Treasury Shares	Treasury Shares Repurchased shares are accounted for as treasury stock under the cost method.
Foreign Currency	Foreign Currency The financial positions and results of operations of the Company’s foreign subsidiaries, for which the functional currency is not the U.S. dollar, are translated into U.S. dollars for financial reporting purposes. Assets and liabilities of the subsidiaries are translated at the exchange rate in effect at each balance sheet date. Income statement accounts are translated at the average rate of exchange prevailing during the period. Translation adjustments are reported in accumulated other comprehensive loss included in stockholders’ equity in the Company’s consolidated balance sheets.
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) Other comprehensive income (loss) includes foreign currency translation adjustments, the changes in fair value of interest rate agreements designated as cash flow hedges, net of taxes, and the gain on the sale of an interest rate hedge agreement designated as a cash flow hedge.
Acquisition-Related Costs	Acquisition-Related Costs Costs related to acquisitions include professional fees for legal, financial, and other advisory services and are expensed in the period that they are incurred.
Business Combinations	Business Combinations Acquisitions that meet the definition of a business in accordance with ASC 805, Business Combinations, are recorded using the acquisition method of accounting. Except for contract assets and contract liabilities, the Company recognizes and measures identifiable assets acquired, liabilities assumed, and any non-controlling interest as of the acquisition date at fair value. Contract assets and contract liabilities from acquired contracts are measured as if the Company had originated the contracts. The valuation of intangible assets is determined by using an approach: market, income, or cost approach. The excess, if any, of total consideration transferred in a business combination over the fair value of identifiable assets acquired, liabilities assumed and any non-controlling interest is recognized as goodwill.
Direct Costs	Direct Costs Direct costs exclude depreciation and amortization and amortization of intangible assets, which are presented separately on the consolidated statements of comprehensive income.
Indirect and Selling Expense	Indirect and Selling Expense Indirect and selling expenses exclude depreciation and amortization, and amortization of intangible assets, which are presented separately on the consolidated statements of comprehensive income.
Fair Value	Fair Value The Company measures and reports certain financial assets and liabilities at fair value in accordance with the Financial Accounting Standards Board (the “FASB”) Accounting Standards Codification (“ASC”) 820, Fair Value Measurements and Disclosures (“ASC 280”). Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. Generally, fair value is based on observable quoted market prices or derived from observable market data when such market prices or data are available. ASC 820 establishes a three-level hierarchy used to estimate fair value by which each level is categorized based on the priority of the inputs used to measure fair value: • Level 1: Quoted prices that are available in active markets for identical assets or liabilities; • Level 2: Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (e.g. interest rates and yield curves that are observable at commonly quoted intervals, and implied volatilities); and inputs derived principally from or corroborated by observable market data by correlation or other means; and • Level 3: Uses inputs that are unobservable and require the Company to make certain assumptions and require significant estimation and judgment from management to use in pricing the fair value of the assets and liabilities. Certain financial instruments, including cash and cash equivalents, contract receivables, and accounts payable are carried at cost, which, due to their short maturities, approximates their fair values. The carrying value of the Company’s long-term debt approximates the estimated fair value for debt with similar terms, interest rates, and remaining maturities currently available to companies with similar credit ratings (Level 2).
Concentration of Credit Risks	Concentration of Credit Risks Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents, derivative financial instruments, and contract receivables. The Company’s domestic bank accounts are insured up to $ 250,000 by the Federal Deposit Insurance Corporation. As of December 31, 2024 and 2023, the Company had $ 9.3 million and $ 0.3 million , respectively, of cash in its accounts that exceeded the insured limit. The majority of the Company’s cash transactions are processed through one U.S. commercial bank. As of December 31, 2024 and 2023, the Company held approximately $ 4.6 million and $ 8.5 million , respectively, of cash and restricted cash in foreign bank accounts. The Company enters into derivative financial instruments with financial institutions that meet certain credit guidelines and limit its risks by continuously monitoring the credit rating of the institutions. The Company’s receivables consist principally of amounts due from agencies and departments of the federal government, state and local governments, and international governments, as well as from commercial organizations. The credit risk, with respect to federal and other government clients, is limited due to the creditworthiness of the respective governmental entity. Receivables from commercial clients generally pose a greater credit risk, and, as a result, are subject to ongoing monitoring. The Company extends credit in the normal course of operations and does not require collateral from its clients.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Accounting Pronouncements Adopted Segment Reporting In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07: Improvements to Reportable Segment Disclosures (“ASU 2023-07”), that required additional disclosures for public entities currently required under the ASC. While it does not change how a public entity identifies its operating segments, ASU 2023-07 enhances the current segment reporting disclosures of Topic 280 by requiring significant segment expenses that are regularly provided to the Chief Operating Decision Maker (the “CODM”), the amount and description of other segment items, and interim disclosures of reportable segment’s profit or loss and assets. ASU 2023-07 also requires public entities that have a single reportable segment to provide all the disclosures required in Topic 280, as amended. The Company completed its adoption of the provisions of ASU 2023-07 during the fourth quarter of 2024, see Note 22 – Segment Information and Geographic Data. Accounting Pronouncements Not Yet Adopted Income Taxes In December 2023, the FASB issued ASU 2023-09, Income Taxes: Improvements to Income Tax Disclosures (“ASU 2023-09”), that require greater disaggregation of income tax rate and amounts paid by entities. ASU 2023-09 specifically requires all entities to disclose, on an annual basis, disaggregated domestic and foreign pre-tax income or loss from continuing operations and the disaggregated income tax expense or benefit by federal, state, and foreign components, and a tabular rate reconciliation, using both percentages and reporting currency amounts, of eight specific categories as well as any individual reconciling items that are equal to or greater than 5% of a threshold computed by multiplying pretax income or loss from continuing operations by the applicable federal rate. Additionally, the amendments also require disclosure of income taxes paid disaggregated by federal, state, and foreign jurisdictions as well as any individual jurisdictions over 5% of the total income taxes paid. ASU 2023-09 is effective for the Company for the 2025 fiscal year, with early adoption permitted. The amendments may be adopted on a prospective or retrospective basis. The Company is currently evaluating the impact of the adoption of ASU 2023-09 but does not expect the adoption to have a material impact, if any, on the consolidated financial statements. Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures In November 2024, the FASB issued ASU 2024-03: Disaggregation of Income Statement Expenses (“ASU 2024-03”), which requires additional disaggregation of certain costs and expenses. ASU 2024-03 specifically requires all public entities to disclose within a tabular format the amounts of (a) purchases of inventory, (b) employee compensation, (c) depreciation, (d) intangible asset amortization, and (e) depreciation, depletion, and amortization recognized as part of oil- and gas-producing activities in each relevant expense caption as well as certain amounts that are already required to be disclosed under current U.S. GAAP. ASU 2024-03 also requires public entities to disclose a qualitative description of the composition of any amounts in relevant expense captions that are not separately disaggregated and the amount and definition of the entity’s selling expenses. ASU 2024-03 is effective for the Company for the 2027 fiscal year and interim periods within the 2028 fiscal year, with early adoption permitted. The amendments may be adopted on a prospective or retrospective basis. The Company is currently evaluating the impact of the adoption of ASU 2024-03 but does not expect the adoption to have a material impact, if any, on the consolidated financial statements.

Restricted Cash (Tables)

Restricted Cash (Tables)	12 Months Ended
	Dec. 31, 2024
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 at December 31, 2024 and 2023 to the total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows for the years ended December 31, 2024, 2023, and 2022: 2024 2023 2022 Beginning Ending Beginning Ending Beginning Ending Cash and cash equivalents $ 6,361 $ 4,960 $ 11,257 $ 6,361 $ 8,254 $ 11,257 Restricted cash 3,088 13,857 1,711 3,088 12,179 1,711 Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows $ 9,449 $ 18,817 $ 12,968 $ 9,449 $ 20,433 $ 12,968

Contract Receivables, Net (Tabl

Contract Receivables, Net (Tables)	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Summary of Contract Receivables, Net	Contract receivables, net consisted of the following as of December 31: 2024 2023 Billed and billable $ 263,624 $ 210,919 Allowance for expected credit losses ( 6,701 ) ( 5,435 ) Contract receivables, net $ 256,923 $ 205,484
Summary of Reconciliation of Billed Contract Receivables Sold to MUF Including Receivables Sold to MUFC And Collected from Customers on Behalf of MUFG And Receivables Not Yet Collected from Customers	The following is a reconciliation of billed contract receivables sold to MUFG that were eligible and accounted for as sales under ASC 860, including billed contract receivables sold to MUFG and collected from customers on behalf of MUFG during the twelve months ended December 31, 2024 and 2023, and the balance of billed contract receivables not yet collected from customers as of December 31, 2024 and 2023, respectively: As of and for the Year Ended December 31, 2024 December 31, 2023 Beginning balance, billed contract receivables sold and not yet collected (1) $ 21,302 $ 3,818 Billed contract receivables sold during the period (2) 634,081 260,904 Collections from customers during the period (2) ( 629,417 ) ( 243,420 ) Ending balance, billed contract receivables sold and not yet collected (3) $ 25,966 $ 21,302 (1) The beginning balances represent billed contract receivables that were previously sold and derecognized by the Company but have not yet been collected from customers as of January 1, 2024 and 2023 , respectively. (2) For the twelve months ended December 31, 2024 and 2023, the Company recorded net inflows of $ 4.7 million and $ 17.5 million , respectively, in its cash flows from operating activities from the sale of billed contract receivables. (3) The ending balances represent billed contract receivables that were sold and derecognized by the Company but have not yet been collected from customers as of December 31, 2024 and 2023 , respectively.
Summary of Reconciliation of Cash Collections from Customers of Billed Contract Receivables Previously Sold to MUFG Including Previous Sold Receivables And Remittance of Cash Collections to MUFG And Cash Collected But Not Yet Remitted to MUFG	The following is a reconciliation of cash collections from customers of billed contract receivables previously sold to MUFG that were eligible and accounted for as sales under ASC 860, including collections from customers on behalf of MUFG of previously sold billed contract receivables and remittances of cash collections to MUFG during the twelve months ended December 31, 2024 and 2023, and the balance of cash collected but not yet remitted to MUFG as of December 31, 2024 and 2023, respectively: As of and for the Year Ended December 31, 2024 December 31, 2023 Beginning balance, cash collected but not yet remitted to MUFG (1) $ 21,796 $ 6,165 Collections from customers during the period (2) 629,417 243,420 Remittances to MUFG during the period (2) ( 627,874 ) ( 227,789 ) Ending balance, cash collected but not yet remitted to MUFG (3) $ 23,339 $ 21,796 (1) The beginning balances represent cash collected from customers on behalf of MUFG for billed contract receivables that were previously sold and derecognized by the Company but have not yet been remitted to MUFG as of January 1, 2024 and 2023 , respectively. (2) For the twelve months ended December 31, 2024 and 2023, the Company recorded net inflows of $ 1.5 million and $ 15.6 million , respectively, in its cash flows from operating activities from the collection of billed contract receivables that were sold but not yet remitted to MUFG. (3) The ending balances are included as part of “Accrued expenses and other current liabilities” on the Company’s consolidated balance sheets.

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and equipment consisted of the following at December 31: 2024 2023 Leasehold improvements $ 53,096 $ 54,398 Purchased software 9,483 16,897 Furniture and office equipment 28,182 29,773 Computer equipment 43,695 44,661 134,456 145,729 Accumulated depreciation and amortization ( 66,338 ) ( 69,781 ) Total property and equipment, net $ 68,118 $ 75,948

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the fiscal years ended December 31 were as follows: 2024 2023 Balance as of January 1, 2024 $ 1,219,476 $ 1,212,898 Add: Goodwill resulting from business combinations 30,200 21,133 Less: Goodwill resulting from business divestitures — ( 16,921 ) Effect of foreign currency translation ( 821 ) 2,366 Balance as of December 31, 2024 $ 1,248,855 $ 1,219,476 See “Note 17 – Acquisitions and Divestitures” for the details of the business combination and divestiture resulting in the changes in goodwill.
Schedule of Other Intangibles	Other intangibles consisted of the following at December 31: 2024 Gross Accumulated Net Carrying Customer-related $ 188,410 $ ( 108,215 ) $ 80,195 Developed technology 8,902 ( 1,279 ) 7,623 Trade name 1,570 ( 1,220 ) 350 Total amortizable intangible assets 198,882 ( 110,714 ) 88,168 Intangible with indefinite life 94 — 94 Total other intangible assets $ 198,976 $ ( 110,714 ) $ 88,262 2023 Gross Accumulated Net Carrying Customer-related $ 185,723 $ ( 93,911 ) $ 91,812 Developed technology 3,902 ( 904 ) 2,998 Trade name 1,280 ( 1,280 ) — Total amortizable intangible assets 190,905 ( 96,095 ) 94,810 Intangible with indefinite life 94 — 94 Total other intangible assets $ 190,999 $ ( 96,095 ) $ 94,904
Schedule of Estimated Future Amortization Expense Relating to Intangible Assets	The estimated future amortization expense relating to intangible assets is as follows: Year ending December 31, 2025 $ 35,590 2026 21,700 2027 6,574 2028 5,214 2029 4,534 Thereafter 14,556 Total $ 88,168

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Summary of Lease Cost	The Company’s lease cost is recognized on a straight-line basis over the lease term and is primarily included within indirect and selling expenses on the consolidated statements of comprehensive income. Lease cost consisted of the following: Year Ended December 31, 2024 2023 2022 Operating lease cost $ 22,085 $ 25,037 $ 37,889 Finance lease cost - amortization of right-of-use assets 2,040 2,040 598 Finance lease cost - interest 519 602 179 Short-term lease cost 724 669 509 Variable lease cost 289 222 146 Sublease income — ( 28 ) ( 92 ) Total lease cost $ 25,657 $ 28,542 $ 39,229
Summary of Future Minimum Lease Payments Under Non-Cancellable Operating and Finance Leases	Future minimum lease payments under non-cancellable operating and finance leases as of December 31, 2024 were as follows: Operating Finance December 31, 2025 $ 26,183 $ 3,041 December 31, 2026 23,708 3,041 December 31, 2027 18,335 3,041 December 31, 2028 15,281 2,985 December 31, 2029 13,244 2,965 Thereafter 118,158 — Total future minimum lease payments 214,909 15,073 Less: Interest ( 38,253 ) ( 1,200 ) Total lease liabilities $ 176,656 $ 13,873 Lease liabilities - current $ 20,721 $ 2,612 Lease liabilities - non-current 155,935 11,261 Total lease liabilities $ 176,656 $ 13,873
Summary of Other Information Related to Operating and Finance Leases	Other information related to operating and finance leases is as follows: Year Ended December 31, 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 27,267 $ 20,368 Financing cash flows from finance leases $ 2,522 $ 2,438 Operating cash flows from finance leases $ 519 $ 602 Right-of-use assets obtained in exchange for new operating lease liabilities $ 3,730 $ 18,590 Property and equipment obtained in exchange for finance lease liabilities — 338 Weighted-average remaining lease term Operating leases 11.4 11.6 Finance leases 5.0 6.0 Weighted-average discount rate Operating leases 3.5 % 3.6 % Finance leases 3.4 % 3.4 %

Accrued Salaries and Benefits (

Accrued Salaries and Benefits (Tables)	12 Months Ended
	Dec. 31, 2024
Employee-related Liabilities, Current [Abstract]
Schedule of Accrued Salaries and Benefits	Accrued salaries and benefits consisted of the following at December 31: 2024 2023 Bonuses, liability-classified awards, and commissions $ 30,884 $ 27,371 Salaries 41,593 32,604 Paid time off and leave 18,028 16,415 Medical 7,548 5,685 Payroll taxes and withholdings 2,252 976 Other 5,468 4,970 Total accrued salaries and benefits $ 105,773 $ 88,021

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2024
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consisted of the following at December 31: 2024 2023 Deposits $ 18,493 $ 20,246 Restricted contract funds 13,857 2,036 Taxes and insurance premiums 3,893 7,010 Facilities rental and lease exit costs 2,524 2,754 Interest 489 3,218 Professional services 2,761 1,943 Dividends 2,626 2,636 Cash collected not yet remitted to purchaser of billed receivables 31,252 28,675 Other accrued expenses and current liabilities 10,806 10,611 Total accrued expenses and other current liabilities $ 86,701 $ 79,129

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Schedule of Long-term Debt	As of December 31, 2024 and 2023, long-term debt consisted of the following: December 31, 2024 December 31, 2023 Average Outstanding Average Outstanding Term Loan $ 200,250 $ 207,750 Delayed-Draw Term Loan 156,750 220,000 Revolving Credit 57,225 6,340 Total before debt issuance costs 6.6 % 414,225 6.7 % 434,090 Unamortized debt issuance costs ( 2,482 ) ( 3,683 ) $ 411,743 $ 430,407 Current portion of long-term debt $ — $ 26,000 Long-term debt - non-current 411,743 404,407 Total $ 411,743 $ 430,407
Schedule of Future Scheduled Repayments of Debt Principal	Future scheduled repayments of debt principal are as follows: Payments due by Term Loan Delayed-Draw Term Loan Revolving Credit Total December 31, 2025 $ — $ — $ — $ — December 31, 2026 — — — — December 31, 2027 200,250 156,750 57,225 414,225 Total $ 200,250 $ 156,750 $ 57,225 $ 414,225

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The Company’s revenue by client markets, type, and contract mix are in the following tables. Certain immaterial revenue amounts in the prior years have been reclassified due to minor adjustments and reclassification. Year ended December 31, 2024 2023 2022 Client Markets: Energy, environment, infrastructure, and disaster recovery $ 929,711 $ 805,942 $ 714,628 Health and social programs 764,477 814,789 704,465 Security and other civilian & commercial 325,599 342,507 360,871 Total $ 2,019,787 $ 1,963,238 $ 1,779,964 Year ended December 31, 2024 2023 2022 Client Type: U.S. federal government $ 1,087,349 $ 1,084,047 $ 980,746 U.S. state and local government 316,083 309,516 259,764 International government 110,798 103,446 103,609 Total Government 1,514,230 1,497,009 1,344,119 Commercial 505,557 466,229 435,845 Total $ 2,019,787 $ 1,963,238 $ 1,779,964 Year ended December 31, 2024 2023 2022 Contract Mix: Time-and-materials $ 855,538 $ 811,911 $ 713,693 Fixed-price 932,351 886,200 802,568 Cost-based 231,898 265,127 263,703 Total $ 2,019,787 $ 1,963,238 $ 1,779,964
Schedule of Contract Assets and Liabilities and Changes in Contract Balances	Contract Assets and Liabilities: Contract assets consist of unbilled receivables on contracts where revenue recognized exceeds the amount billed. Contract liabilities result from advance payments received on a contract or from billings in excess of revenue recognized on long-term contracts. The following table summarizes the contract balances as of December 31, 2024 and December 31, 2023: December 31, 2024 December 31, 2023 Change Contract assets $ 188,941 $ 201,832 $ ( 12,891 ) Contract liabilities ( 24,580 ) ( 21,997 ) ( 2,583 ) Net contract assets (liabilities) $ 164,361 $ 179,835 $ ( 15,474 ) The net contract assets (liabilities) as of December 31, 2024 decreased by $ 15.5 million as compared to December 31, 2023, 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 years ended December 31, 2024 and 2023, the Company recognized $ 17.6 million and $ 17.8 million in revenue related to the contract liabilities balance at December 31, 2023 and 2022, respectively. Unfulfilled

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Effect of Swaps on Company's Financial Statements	For the years ended December 31, 2024 and 2023, the effect of the Swaps on the Company’s financial statements are as follows: Cash Flow Hedging Derivatives Total Gain (Loss) Recorded to AOCI Amount of (Gain) or Loss Year Ended December 31, 2024 2023 2024 2023 Interest Rate Swaps $ 5,996 $ ( 45 ) $ ( 6,244 ) $ ( 6,982 )

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Before Income Taxes	The domestic and foreign components of income before provision for income taxes are as follows for the years ended December 31: 2024 2023 2022 Domestic $ 134,068 $ 83,742 $ 80,372 Foreign 3,990 12,805 3,608 Income before income taxes $ 138,058 $ 96,547 $ 83,980
Income Tax Expense Components	Income tax expense consisted of the following for the years ended December 31: 2024 2023 2022 Current: Federal $ 41,276 $ 28,108 $ 8,413 State 16,851 10,380 2,686 Foreign 1,647 2,247 1,661 Total current 59,774 40,735 12,760 Deferred: Federal ( 21,055 ) ( 20,279 ) 4,264 State ( 10,861 ) ( 6,915 ) 3,607 Foreign 30 394 ( 894 ) Total deferred ( 31,886 ) ( 26,800 ) 6,977 Income tax expense $ 27,888 $ 13,935 $ 19,737
Deferred Tax Assets (Liabilities)	Deferred tax assets (liabilities) consisted of the following at December 31: 2024 2023 Deferred Tax Assets Allowance for expected credit losses $ 1,648 $ 1,213 Accrued paid time off 3,525 3,039 State net operating loss carryforward 456 500 Stock-based compensation 6,076 5,523 Deferred compensation 6,568 5,765 Foreign tax credits 8,151 8,035 State tax credits 1,923 686 Foreign exchange 4,345 3,591 Foreign deferred 333 441 Accrued bonus 6,393 5,830 Capital loss 1,020 1,054 Facilities impairment 2,611 3,092 Capitalized research expenses 70,617 47,019 Depreciation 402 — Accrued liabilities and other 1,364 2,682 Lease liabilities 54,263 58,538 169,695 147,008 Less: Valuation Allowance ( 9,627 ) ( 9,021 ) Total Deferred Tax Assets 160,068 137,987 Deferred Tax Liabilities Payroll taxes ( 939 ) ( 725 ) Unbilled revenue ( 184 ) ( 284 ) Depreciation — ( 2,128 ) Amortization ( 108,009 ) ( 107,201 ) Deferred gain and other ( 2,543 ) ( 2,202 ) Lease assets - right-of-use ( 46,790 ) ( 51,622 ) Total Deferred Tax Liabilities ( 158,465 ) ( 164,162 ) Total Net Deferred Tax Assets (Liabilities) $ 1,603 $ ( 26,175 )
Components of Unrecognized Tax Benefits, Excluding Penalty and Interest	The components of unrecognized tax benefits, excluding penalty and interest, are as follows at December 31: 2024 2023 U.S. transfer pricing $ — $ 145 India transfer pricing — 164 Section 41 tax credit 15,042 8,736 Section 174 expense capitalization 10,798 15,086 Total $ 25,840 $ 24,131 The unrecognized tax benefit reconciliation, excluding penalty and interest, is as follows: Unrecognized tax benefits at January 1, 2022 $ 450 Decrease attributable to tax positions taken during the current period ( 305 ) Unrecognized tax benefits at December 31, 2022 145 Increase attributable to tax positions taken during a prior period 19,845 Increase attributable to tax positions taken during the current period 4,141 Unrecognized tax benefits at December 31, 2023 24,131 Decrease attributable to tax positions taken during a prior period ( 4,597 ) Increase attributable to tax positions taken during the current period 6,306 Unrecognized tax benefits at December 31, 2024 25,840
Effective Income Tax Rate Reconciliation	The Company’s provision for income taxes differs from the federal statutory rate. The differences between the statutory rate and the Company’s provision are as follows for the years ended December 31: 2024 2023 2022 Taxes at statutory rate 21.0 % 21.0 % 21.0 % State taxes, net of federal benefit 6.0 % 6.0 % 5.8 % Foreign tax rate differential ( 0.1 )% ( 0.2 )% 0.1 % Executive compensation 1.8 % 1.7 % 2.2 % Other permanent differences ( 0.4 )% ( 0.3 )% 2.0 % Global intangible low-taxed income (GILTI) — 0.3 % — Prior year tax adjustments ( 2.0 )% ( 6.4 )% ( 1.1 )% Deferred impact of state rate change 0.1 % 0.5 % 0.6 % Worthless stock deduction — ( 5.1 )% ( 4.6 )% Unrecognized tax benefits 4.0 % 9.0 % ( 0.4 )% Capital loss — ( 3.8 )% — Valuation allowance 1.3 % 2.0 % 0.7 % Equity-based compensation ( 1.7 )% ( 1.1 )% ( 1.3 )% Tax credits ( 9.8 )% ( 9.2 )% ( 1.5 )% Taxes at effective rate 20.2 % 14.4 % 23.5 %

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2024
Stockholders' Equity Note [Abstract]
Components of Accumulated Other Comprehensive (Loss) Income	Accumulated other comprehensive (loss) income included the following: Foreign Changes in (1)(2) Total Accumulated other comprehensive (loss) income at January 1, 2022 $ ( 8,759 ) $ ( 2,276 ) $ ( 11,035 ) Current period other comprehensive income (loss): Other comprehensive income (loss) before reclassifications ( 9,259 ) 11,445 2,186 Amounts reclassified from accumulated other comprehensive (loss) income — ( 248 ) ( 248 ) Effect of taxes (3) 3,962 ( 2,998 ) 964 Total current period other comprehensive income (loss) ( 5,297 ) 8,199 2,902 Accumulated other comprehensive (loss) income at December 31, 2022 ( 14,056 ) 5,923 ( 8,133 ) Current period other comprehensive income (loss): Other comprehensive (loss) income before reclassifications 4,158 ( 45 ) 4,113 Amounts reclassified from accumulated other comprehensive (loss) income — ( 6,982 ) ( 6,982 ) Effect of taxes (3) ( 2,797 ) 1,914 ( 883 ) Total current period other comprehensive income (loss) 1,361 ( 5,113 ) ( 3,752 ) Accumulated other comprehensive (loss) income at December 31, 2023 ( 12,695 ) 810 ( 11,885 ) Current period other comprehensive income (loss): Other comprehensive income (loss) before reclassifications ( 3,884 ) 5,996 2,112 Amounts reclassified from accumulated other comprehensive (loss) income (4) — ( 6,244 ) ( 6,244 ) Effect of taxes (3) 196 75 271 Total current period other comprehensive income (loss) ( 3,688 ) ( 173 ) ( 3,861 ) Accumulated other comprehensive (loss) income at December 31, 2024 $ ( 16,383 ) $ 637 $ ( 15,746 ) (1) 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 through June 27, 2028. See additional details of the hedge agreements in Note 12 - Derivative Instruments and Hedging Activities. (2) The Company expects to reclassify $ 0.8 million in unrealized gains related to the Change in Fair Value of Interest Rate Hedge Agreement from accumulated other comprehensive loss into earnings during the next 12 months. (3) The Company’s effective tax rate for the years ended December 31, 2024, 2023, and 2022 was 20.2 % , 14.4 % , and 23.5 % , respectively.

Stock-based Compensation (Table

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Schedule of Stock-based Compensation Expense	The total stock-based compensation expense for the years ended December 31, 2024, 2023, and 2022, the unrecognized compensation expense at December 31, 2024, and the weighted-average period to recognize the remaining unrecognized shares are as follows: Stock-Based Compensation Expense Recognized Unrecognized 2024 2023 2022 2024 Weighted Restricted Stock Units $ 10,654 $ 9,413 $ 9,300 $ 13,910 1.5 Cash-Settled Restricted Stock Units 8,341 8,061 5,709 7,648 1.3 Non-Employee Director Awards 972 1,029 1,087 408 0.4 Performance Shares 5,096 4,416 2,784 5,177 1.4 Total $ 25,063 $ 22,919 $ 18,880 $ 27,143
Summary of Non-employee Director Awards	The Company grants awards of registered shares to its non-employee directors on an annual basis under the A&R Omnibus Plan. A summary of the non-employee director awards is presented below: Number of Weighted- Aggregate Non-vested RSUs at January 1, 2022 5,586 $ 90.73 Granted 11,399 $ 95.35 Vested ( 11,637 ) $ 93.39 Cancelled — $ — Non-vested RSUs at December 31, 2022 5,348 $ 94.79 Granted 8,211 $ 127.81 Vested ( 9,457 ) $ 109.14 Cancelled — $ — Non-vested RSUs at December 31, 2023 4,102 $ 127.81 Granted 6,618 $ 135.91 Vested ( 7,414 ) $ 131.43 Cancelled — $ — Non-vested RSUs at December 31, 2024 3,306 $ 135.91 $ 394 RSUs expected to vest in the future 3,306 $ 135.91 $ 394
Summary of Performance Shares Activity	A summary of the Company’s PSAs is presented below. Number of Weighted- Aggregate Non-vested PSAs at January 1, 2022 133,079 $ 76.54 Granted 38,412 $ 93.15 Vested ( 47,634 ) $ 82.38 Cancelled ( 3,170 ) $ 80.64 Non-vested PSAs at December 31, 2022 120,687 $ 79.42 Granted 36,956 $ 115.67 Vested ( 45,141 ) $ 58.76 Cancelled ( 6,934 ) $ 61.49 Non-vested PSAs at December 31, 2023 105,568 $ 102.12 Granted 41,365 $ 143.97 Vested ( 46,630 ) $ 95.72 Cancelled ( 4,198 ) $ 114.91 Non-vested PSAs at December 31, 2024 96,105 $ 122.68 $ 11,457 PSAs expected to vest in the future 59,863 $ 138.01 $ 7,136
Schedule of Fair Value Assumptions using Monte Carlo Simulation Model for Awards Granted	The fair value assumptions using the Monte Carlo simulation model for awards granted in 2024, 2023, and 2022 were: 2024 2023 2022 Dividend Yield 0.4 % 0.5 % 0.6 % Historical Volatility 29.3 % 33.6 % 39.0 % Risk-Free Rate of Returns 4.4 % 3.8 % 2.1 %
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Schedule of Restricted Stock Unit Activity	A summary of the Company’s RSUs is presented below. Number of Weighted- Aggregate Non-vested RSUs at January 1, 2022 303,836 $ 79.17 Granted 148,361 $ 93.70 Vested ( 140,666 ) $ 76.53 Cancelled ( 26,705 ) $ 77.16 Non-vested RSUs at December 31, 2022 284,826 $ 88.23 Granted 89,388 $ 110.80 Vested ( 93,881 ) $ 78.05 Cancelled ( 21,815 ) $ 94.01 Non-vested RSUs at December 31, 2023 258,518 $ 99.25 Granted 86,428 $ 153.22 Vested ( 107,168 ) $ 95.65 Cancelled ( 26,807 ) $ 109.79 Non-vested RSUs at December 31, 2024 210,971 $ 121.86 $ 25,150 RSUs expected to vest in the future 192,949 $ 120.99 $ 23,002
Cash Settled RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Schedule of Restricted Stock Unit Activity	A summary of the Company’s CSRSUs is presented below. Number of Weighted- Aggregate Non-vested CSRSUs at January 1, 2022 166,260 $ 72.79 Granted 115,024 $ 97.88 Vested ( 75,566 ) $ 73.20 Cancelled ( 17,299 ) $ 80.02 Non-vested CSRSUs at December 31, 2022 188,419 $ 87.28 Granted 70,742 $ 110.65 Vested ( 81,537 ) $ 76.26 Cancelled ( 19,040 ) $ 91.94 Non-vested CSRSUs at December 31, 2023 158,584 $ 102.82 Granted 38,653 $ 153.15 Vested ( 58,078 ) $ 99.30 Cancelled ( 9,424 ) $ 114.93 Non-vested CSRSUs at December 31, 2024 129,735 $ 118.51 $ 15,466 CSRSUs expected to vest in the future 117,615 $ 117.55 $ 14,021

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	12 Months Ended
	Dec. 31, 2024
Business Acquisition [Line Items]
Schedule of Unaudited Condensed Pro Forma Financial Information	The following unaudited condensed pro forma information presents combined financial information as if the acquisition of SemanticBits had been effective at January 1, 2021, the beginning of the 2021 fiscal year, and as a result, fiscal year 2022 represents the pro forma results for year two of the acquisition. The pro forma information includes alignment of SemanticBits’ revenue recognition policy, corrections of employee-related expenses, and adjustments reflecting changes in the amortization of intangibles, acquisition-related costs, interest expense, and records income tax effects as if SemanticBits had been included in the Company’s results of operations. (Unaudited) Year Ended 2022 Revenue $ 1,856,399 Net income 75,999 The pro forma information is not intended to reflect the actual combined results of operations that would have occurred if the acquisition was completed on January 1, 2021, nor is it indicative of future operating results after the acquisition date of July 13, 2022.
Applied Energy Group, Inc.
Business Acquisition [Line Items]
Summary of Preliminary Purchase Price Allocation	As part of the preliminary allocation of the purchase consideration, the Company recorded the following: Net working capital $ 4,049 Property and equipment 55 Customer-related intangibles 21,000 Developed technology 5,000 Trade names and trademarks 350 Goodwill 30,200 Purchase considerations $ 60,654
Summary of Estimated Useful Lives of Acquired Intangible Assets	The estimated useful lives of acquired intangible assets are as follows: Customer-related intangibles 9.0 years Developed technology 6.0 years Trade names and trademarks 1.0 year
CMY Solutions, LLC.
Business Acquisition [Line Items]
Summary of Preliminary Purchase Price Allocation	As part of the allocation of purchase consideration, the Company recorded the following: Net working capital $ 1,169 Customer-related intangibles 9,900 Trade names and trademarks 100 Goodwill 21,366 Purchase considerations $ 32,535
Summary of Estimated Useful Lives of Acquired Intangible Assets	The estimated useful lives of acquired intangible assets are as follows: Customer-related intangibles 5 years Trade names and trademarks 1 year
Blanton & Associates
Business Acquisition [Line Items]
Summary of Preliminary Purchase Price Allocation	As part of the allocation of the purchase consideration, the Company recorded the following: Net working capital $ 4,604 Property and equipment 159 Customer-related intangibles 10,919 Contract backlog 466 Trade names and trademarks 60 Goodwill 9,712 Deferred income tax liabilities ( 3,023 ) Purchase consideration $ 22,897
Summary of Estimated Useful Lives of Acquired Intangible Assets	The estimated useful lives of acquired intangible assets are as follows: Customer-related intangibles 11 years Contract backlog 3 years Trade names and trademarks 0.3 year
SemanticBits LLC
Business Acquisition [Line Items]
Summary of Preliminary Purchase Price Allocation	The final purchase price allocation is summarized as follows: Contract receivables $ 12,699 Contract assets 6,071 Customer-related intangibles 62,967 Trade names and trademarks 1,120 Other current and non-current assets 407 Accrued salaries and benefits ( 3,998 ) Accrued expenses and other liabilities ( 6,244 ) Deferred tax liability ( 16,701 ) Net assets acquired 56,321 Goodwill 159,677 Purchase consideration $ 215,998
Summary of Estimated Useful Lives of Acquired Intangible Assets	The estimated useful lives of acquired intangible assets are as follows: Customer-related intangibles 4.0 years Trade names and trademarks 0.7 year

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2024
Earnings Per Share [Abstract]
Schedule of Dilutive Effect of Stock Options RSUs and PSAs	The dilutive effect of stock options, RSUs, and performance shares for each period reported is summarized below: 2024 2023 2022 Net Income $ 110,170 $ 82,612 $ 64,243 Weighted-average number of basic shares outstanding during the period 18,747 18,802 18,818 Dilutive effect of stock options, RSUs, and performance shares 178 192 215 Weighted-average number of diluted shares outstanding during the period 18,925 18,994 19,033 Basic earnings per share $ 5.88 $ 4.39 $ 3.41 Diluted earnings per share $ 5.82 $ 4.35 $ 3.38

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2024
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 financial statements are as follows: December 31, 2024 Level 1 Level 2 Level 3 Total Location on Balance Sheet Assets: Interest rate swaps - current portion $ — $ 825 $ — $ 825 Prepaid expenses and other assets Interest rate swaps - long-term portion — 129 — 129 Other assets Company-owned life insurance policies — 23,174 — 23,174 Other assets Liabilities: Interest swaps - current portion $ — $ 15 $ — $ 15 Accrued expenses and other current liabilities Interest swaps - long-term portion — 153 — 153 Other long-term liabilities December 31, 2023 Level 1 Level 2 Level 3 Total Location on Balance Sheet Assets: Interest rate swaps - current portion $ — $ 4,820 $ — $ 4,820 Prepaid expenses and other assets Foreign currency forward and swap contracts — 6 — 6 Prepaid expenses and other assets Interest rate swaps - long-term portion — 398 — 398 Other assets Company-owned life insurance policies — 20,438 — 20,438 Other assets Financial and non-financial instruments measured or remeasured at fair value on a non-recurring basis include certain impaired right-of-use assets from operating leases and assets acquired and liabilities assumed from acquisitions, using the discounted cash flows method with Level 3 inputs as of the impairment and acquisition dates.

Segment Information and Geogr_2

Segment Information and Geographic Data (Tables)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Schedule of Segment Revenue, Significant Segment Expenses, and Segment Profit	The segment revenue, significant segment expenses, and segment profit are as follows: Year ended December 31, 2024 2023 2022 Revenue $ 2,019,787 $ 1,963,238 $ 1,779,964 Significant segment expenses: Direct labor & related fringe costs 775,239 730,322 639,861 Subcontractors & other direct costs 506,777 534,696 494,561 Indirect and selling expenses 518,453 505,162 486,863 Depreciation and amortization 20,484 25,277 21,482 Amortization of intangible assets 32,992 35,461 28,435 Interest expense 29,878 39,952 23,525 Provision for income taxes 27,888 13,935 19,737 Other segment (income) expense (1) ( 2,094 ) ( 4,179 ) 1,257 Net Income $ 110,170 $ 82,612 $ 64,243 (1) Other segment income (expenses) includes interest income, foreign currency expense, and gains/losses on disposition of assets.
Schedule of Net Revenue	The following table provide net revenue for the Company ’s home country and foreign countries: Year ended December 31, 2024 2023 2022 Revenue: U.S. $ 1,869,105 $ 1,832,562 $ 1,644,737 Other countries 150,682 130,676 135,227 Total revenue $ 2,019,787 $ 1,963,238 $ 1,779,964
Schedule of Long-lived Assets Held	The following table provide long-lived assets held in the Company’s home country and in foreign countries: December 31, 2024 2023 Long-lived assets: U.S. $ 65,045 $ 71,791 Other countries 3,073 4,157 Total long-lived assets $ 68,118 $ 75,948

Basis of Presentation and Nat_2

Basis of Presentation and Nature of Operations - Additional Information (Details) - Minimum	Dec. 31, 2024 Office
Domestic
Basis of Presentation and Nature of Operations [Line Items]
Number of offices	55
International
Basis of Presentation and Nature of Operations [Line Items]
Number of offices	15

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) Segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Contract payment term description	contracts typically contain billing terms that provide for invoicing monthly or upon completion of milestones, and payment on a net 30-day basis.
Contracts payment, term	30 days
Number of reportable segments | Segment	1
Goodwill, impaired, accumulated impairment loss	$ 0
Board-related services period expensed	1 year
Number of operating segments | Segment	1
Revenue	$ 2,019,787,000	$ 1,963,238,000	$ 1,779,964,000
Foreign financial institutions, actual deposits	4,600,000	8,500,000
Domestic bank accounts exceeded FDIC insurance limit	9,300,000	300,000
Other Assets
Summary Of Significant Accounting Policies [Line Items]
Capitalized software, net of accumulated amortization	21,800,000	12,800,000
Implementation costs of hosted software	2,800,000	2,600,000
Indirect and Selling Expenses | Operating Facility Lease Right-of-Use Assets and Leasehold Improvements
Summary Of Significant Accounting Policies [Line Items]
Impairment losses	$ 3,600,000	$ 6,800,000	$ 8,400,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	2 years
Finite-lived intangible asset, useful life	1 year
Minimum | Other Assets
Summary Of Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	7 years
Finite-lived intangible asset, useful life	11 years
Insured domestic bank accounts	$ 250,000
Maximum | Other Assets
Summary Of Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	5 years

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	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 4,960	$ 6,361	$ 11,257	$ 8,254
Restricted cash	13,857	3,088	1,711	12,179
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows	$ 18,817	$ 9,449	$ 12,968	$ 20,433

Contract Receivables, Net - Sum

Contract Receivables, Net - Summary of Contract Receivables, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Receivables [Abstract]
Billed and billable	$ 263,624	$ 210,919
Allowance for expected credit losses	(6,701)	(5,435)
Contract receivables, net	$ 256,923	$ 205,484

Contract Receivables, Net -Summ

Contract Receivables, Net -Summary of Reconciliation of Billed Contract Receivables Sold to MUF Including Receivables Sold to MUFC And Collected from Customers on Behalf of MUFG And Receivables Not Yet Collected from Customers (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023
Receivables [Abstract]
Beginning balance	[1]	$ 21,302	[2]	$ 3,818
Billed receivables sold during the period	[3]	634,081		260,904
Collections from customers during the period	[3],[4]	(629,417)		(243,420)
Ending balance	[2]	$ 25,966		$ 21,302	[1]
[1] The beginning balances represent billed contract receivables that were previously sold and derecognized by the Company but have not yet been collected from customers as of January 1, 2024 and 2023 , respectively. The ending balances represent billed contract receivables that were sold and derecognized by the Company but have not yet been collected from customers as of December 31, 2024 and 2023 , respectively. For the twelve months ended December 31, 2024 and 2023, the Company recorded net inflows of $ 4.7 million and $ 17.5 million , respectively, in its cash flows from operating activities from the sale of billed contract receivables. For the twelve months ended December 31, 2024 and 2023, the Company recorded net inflows of $ 1.5 million and $ 15.6 million , respectively, in its cash flows from operating activities from the collection of billed contract receivables that were sold but not yet remitted to MUFG.

Contract Receivables, Net - S_2

Contract Receivables, Net - Summary of Reconciliation of Billed Contract Receivables Sold to MUF Including Receivables Sold to MUFC And Collected from Customers on Behalf of MUFG And Receivables Not Yet Collected from Customers (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Receivables [Abstract]
Proceeds from sale of billed contract receivables	$ 4.7	$ 17.5

Contract Receivables, Net - S_3

Contract Receivables, Net - Summary of Reconciliation of Cash Collections from Customers of Billed Contract Receivables Previously Sold to MUFG Including Previous Sold Receivables And Remittance of Cash Collections to MUFG And Cash Collected But Not Yet Remitted to MUFG (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023
Receivables [Abstract]
Beginning balance	[1]	$ 21,796	[2]	$ 6,165
Collections from customers during the period	[3],[4]	629,417		243,420
Remittances to MUFG during the period	[3]	(627,874)		(227,789)
Ending balance	[2]	$ 23,339		$ 21,796	[1]
[1] The beginning balances represent cash collected from customers on behalf of MUFG for billed contract receivables that were previously sold and derecognized by the Company but have not yet been remitted to MUFG as of January 1, 2024 and 2023 , respectively. The ending balances are included as part of “Accrued expenses and other current liabilities” on the Company’s consolidated balance sheets. For the twelve months ended December 31, 2024 and 2023, the Company recorded net inflows of $ 1.5 million and $ 15.6 million , respectively, in its cash flows from operating activities from the collection of billed contract receivables that were sold but not yet remitted to MUFG. For the twelve months ended December 31, 2024 and 2023, the Company recorded net inflows of $ 4.7 million and $ 17.5 million , respectively, in its cash flows from operating activities from the sale of billed contract receivables.

Contract Receivables, Net - S_4

Contract Receivables, Net - Summary of Reconciliation of Cash Collections from Customers of Billed Contract Receivables Previously Sold to MUFG Including Previous Sold Receivables And Remittance of Cash Collections to MUFG And Cash Collected But Not Yet Remitted to MUFG (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Procceds from sale of billed receivables but not yet remitted to MUFG	$ 1.5	$ 15.6

Contract Receivables, Net - Add

Contract Receivables, Net - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Sale of billed contract receivables amount	$ 6,200	$ 33,100
Cash collected not yet remitted for receivables sold	31,252	28,675
Master Receivables Purchase Agreement with MUFG Bank
Financing Receivable, Past Due [Line Items]
Cash collected not yet remitted for receivables sold	$ 7,900	$ 6,900

Property and Equipment - Proper

Property and Equipment - Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 134,456	$ 145,729
Accumulated depreciation and amortization	(66,338)	(69,781)
Total property and equipment, net	68,118	75,948
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	53,096	54,398
Purchased software
Property Plant And Equipment [Line Items]
Property and equipment, gross	9,483	16,897
Furniture and Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	28,182	29,773
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 43,695	$ 44,661

Property and Equipment - Additi

Property and Equipment - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 20,484	$ 25,277	$ 21,482

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Line Items]
Balance as of January 1, 2024	$ 1,219,476	$ 1,212,898
Add: Goodwill resulting from business combinations	30,200	21,133
Less: Goodwill resulting from business divestitures	0	(16,921)
Effect of foreign currency translation	(821)	2,366
Balance as of December 31, 2024	$ 1,248,855	$ 1,219,476

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Amortization of Intangible Assets	$ 32,992	$ 35,461	$ 28,435
Minimum
Finite-lived intangible asset, useful life	1 year
Maximum
Finite-lived intangible asset, useful life	11 years
Weighted Average
Finite-lived intangible asset, useful life	5 years 8 months 12 days
Weighted Average | Customer Relationships
Finite-lived intangible asset, useful life	5 years 8 months 12 days
Weighted Average | Technology-Based Intangible Assets
Finite-lived intangible asset, useful life	7 years 7 months 6 days

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Schedule of Other Intangibles (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Finite lived intangible assets, gross carrying value	$ 198,882	$ 190,905
Accumulated amortization	(110,714)	(96,095)
Finite lived intangible assets, net carrying value	88,168	94,810
Indefinite lived intangible assets, gross carrying value	94	94
Total intangible assets, gross carrying value	198,976	190,999
Other intangible assets, net	88,262	94,904
Customer-Related Intangible Assets
Finite lived intangible assets, gross carrying value	188,410	185,723
Accumulated amortization	(108,215)	(93,911)
Finite lived intangible assets, net carrying value	80,195	91,812
Developed Technology Rights
Finite lived intangible assets, gross carrying value	8,902	3,902
Accumulated amortization	(1,279)	(904)
Finite lived intangible assets, net carrying value	7,623	2,998
Trade Name
Finite lived intangible assets, gross carrying value	1,570	1,280
Accumulated amortization	(1,220)	(1,280)
Finite lived intangible assets, net carrying value	$ 350	$ 0

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Estimated Future Amortization Expense Relating to Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
2025	$ 35,590
2026	21,700
2027	6,574
2028	5,214
2029	4,534
Thereafter	14,556
Finite lived intangible assets, net carrying value	$ 88,168	$ 94,810

Leases - Additional Information

Leases - Additional Information (Details)	12 Months Ended
	Dec. 31, 2024
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
Finance 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
Finance 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.
Finance 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
Finance leases, remaining lease term	1 year
Maximum
Lessee Lease Description [Line Items]
Operating leases, remaining lease term	14 years
Finance leases, remaining lease term	14 years
Operating leases, termination lease term	1 year
Operating leases, extendable lease term	5 years
Finance leases, extendable lease term	5 years
Finance leases, termination lease term	1 year

Leases - Summary of Lease Cost

Leases - Summary of Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease cost	$ 22,085	$ 25,037	$ 37,889
Finance lease cost - amortization of right-of-use assets	2,040	2,040	598
Finance lease cost - interest	519	602	179
Short-term lease cost	724	669	509
Variable lease cost	289	222	146
Sublease income		(28)	(92)
Total lease cost	$ 25,657	$ 28,542	$ 39,229

Leases - Summary of Future Mini

Leases - Summary of Future Minimum Lease Payments Under Non-Cancellable Operating and Finance Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
December 31, 2025	$ 26,183
December 31, 2026	23,708
December 31, 2027	18,335
December 31, 2028	15,281
December 31, 2029	13,244
Thereafter	118,158
Total future minimum lease payments	214,909
Less: Interest	(38,253)
Total lease liabilities	176,656
Lease liabilities - current	20,721	$ 20,409
Lease liabilities - non-current	155,935	175,460
December 31, 2025	3,041
December 31, 2026	3,041
December 31, 2027	3,041
December 31, 2028	2,985
December 31, 2029	2,965
Total future minimum lease payments	15,073
Less: Interest	(1,200)
Total lease liabilities	13,873
Lease liabilities - current	2,612	2,522
Lease liabilities - non-current	$ 11,261	$ 13,874

Leases - Summary of Other Infor

Leases - Summary of Other Information Related to Operating and Finance Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating cash flows from operating leases	$ 27,267	$ 20,368
Financing cash flows from finance leases	2,522	2,438
Operating cash flows from finance leases	519	602
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 3,730	18,590
Property and equipment obtained in exchange for finance lease liabilities		$ 338
Weighted-average remaining lease term - Operating leases	11 years 4 months 24 days	11 years 7 months 6 days
Weighted-average remaining lease term - Finance leases	5 years	6 years
Weighted-average discount rate - Operating leases	3.50%	3.60%
Weighted-average discount rate - Finance leases	3.40%	3.40%

Accrued Salaries and Benefits -

Accrued Salaries and Benefits - Schedule of Accrued Salaries and Benefits (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Employee-related Liabilities, Current [Abstract]
Bonuses, liability-classified awards, and commissions	$ 30,884	$ 27,371
Salaries	41,593	32,604
Paid time off and leave	18,028	16,415
Medical	7,548	5,685
Payroll taxes and withholdings	2,252	976
Other	5,468	4,970
Total accrued salaries and benefits	$ 105,773	$ 88,021

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Deposits	$ 18,493	$ 20,246
Restricted contract funds	13,857	2,036
Taxes and insurance premiums	3,893	7,010
Facilities rental and lease exit costs	2,524	2,754
Interest	489	3,218
Professional services	2,761	1,943
Dividends	2,626	2,636
Cash collected not yet remitted to purchaser of billed receivables	31,252	28,675
Other accrued expenses and current liabilities	10,806	10,611
Total accrued expenses and other current liabilities	$ 86,701	$ 79,129

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details) - USD ($)		12 Months Ended
	May 06, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Line of credit facility, expiration date		May 06, 2027
Letters of credit sublimit	$ 100,000,000
Line of credit facility, swing line commitment amount	75,000,000
Line of credit facility, additional revolving credit commitments under existing loan facility	$ 300,000,000
Outstanding balance net of unamortized debt issuance costs		$ 411,743,000	$ 430,407,000
Line of credit facility leverage ratio covenant temporary increment	5%
Line of credit facility, interest coverage ratio covenant	3%
Amortization of debt issuance costs		$ 1,200,000	$ 2,000,000	$ 1,300,000
Number of letters of credit, outstanding		4
Letters of credit outstanding, amount		$ 1,600,000
Interest Rate Swap | Cash Flow Hedging | Designated as Hedging Instrument
Debt Instrument [Line Items]
Derivative fixed interest rate		5.30%	5.60%
Federal Funds Open Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.50%
Secured Overnight Financing Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1%
Revolving Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 600,000,000	$ 600,000,000
Unused borrowing capacity amount		$ 541,100,000
Interest rate on credit facility		6.60%	6.70%
Delayed Draw Term Loan Facility
Debt Instrument [Line Items]
Line of credit facility	400,000,000
Maximum
Debt Instrument [Line Items]
Debt instrument, principal amount	$ 300,000,000
Line of credit facility, leverage ratio covenant	4.50%
Foreign currency debt limit	$ 200,000,000
Minimum
Debt Instrument [Line Items]
Debt instrument, principal amount	$ 200,000,000
Line of credit facility, leverage ratio covenant	4%
Foreign currency debt limit	$ 30,000,000

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long Term Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Average Interest Rate	6.60%	6.70%
Outstanding Balance before debt issuance costs	$ 414,225	$ 434,090
Unamortized debt issuance costs	(2,482)	(3,683)
Total	411,743	430,407
Current portion of long-term debt	0	26,000
Total	411,743	404,407
Term Loan
Debt Instrument [Line Items]
Outstanding Balance before debt issuance costs	200,250	207,750
Delayed-Draw Term Loan
Debt Instrument [Line Items]
Outstanding Balance before debt issuance costs	156,750	220,000
Revolving Credit
Debt Instrument [Line Items]
Outstanding Balance before debt issuance costs	$ 57,225	$ 6,340

Long Term Debt - Schedule of Fu

Long Term Debt - Schedule of Future Scheduled Repayments of Term Loan Principal (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
December 31, 2025	$ 0
December 31, 2026	0
December 31, 2027	414,225
Total	414,225	$ 434,090
Term Loan
Debt Instrument [Line Items]
December 31, 2025	0
December 31, 2026	0
December 31, 2027	200,250
Total	200,250	207,750
Delayed-Draw Term Loan
Debt Instrument [Line Items]
December 31, 2025	0
December 31, 2026	0
December 31, 2027	156,750
Total	156,750	220,000
Revolving Credit
Debt Instrument [Line Items]
December 31, 2027	57,225
Total	$ 57,225	$ 6,340

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation Of Revenue [Line Items]
Revenue from clients	$ 2,019,787	$ 1,963,238	$ 1,779,964
Time-and-Materials
Disaggregation Of Revenue [Line Items]
Revenue from clients	855,538	811,911	713,693
Fixed-Price
Disaggregation Of Revenue [Line Items]
Revenue from clients	932,351	886,200	802,568
Cost-Based
Disaggregation Of Revenue [Line Items]
Revenue from clients	231,898	265,127	263,703
U.S. Federal Government
Disaggregation Of Revenue [Line Items]
Revenue from clients	1,087,349	1,084,047	980,746
U.S. State and Local Government
Disaggregation Of Revenue [Line Items]
Revenue from clients	316,083	309,516	259,764
International Government
Disaggregation Of Revenue [Line Items]
Revenue from clients	110,798	103,446	103,609
Total Government
Disaggregation Of Revenue [Line Items]
Revenue from clients	1,514,230	1,497,009	1,344,119
Commercial
Disaggregation Of Revenue [Line Items]
Revenue from clients	505,557	466,229	435,845
Energy, Environment, Infrastructure, and Disaster Recovery
Disaggregation Of Revenue [Line Items]
Revenue from clients	929,711	805,942	714,628
Health and Social Programs
Disaggregation Of Revenue [Line Items]
Revenue from clients	764,477	814,789	704,465
Security and Other Civilian & Commercial
Disaggregation Of Revenue [Line Items]
Revenue from clients	$ 325,599	$ 342,507	$ 360,871

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenue From Contract With Customer [Line Items]
Net contract assets (liabilities)	$ 15,474
Revenue related to contract liabilities	$ 17,600	$ 17,800

Revenue Recognition - Schedule

Revenue Recognition - Schedule of Changes in Contract Balances Due to Adoption of New Accounting Standards (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Contract assets	$ 188,941	$ 201,832
Contract liabilities	(24,580)	(21,997)
Net contract assets (liabilities)	164,361	$ 179,835
Change in contract assets	(12,891)
Change in contract liabilities	(2,583)
Change in net contract assets (liabilities)	$ (15,474)

Revenue Recognition - Additio_2

Revenue Recognition - Additional Information (Detail1) - USD ($) $ in Millions	2 Months Ended
	Feb. 25, 2025	Dec. 31, 2024
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-01-01
Revenue From Contract With Customer [Line Items]
Unfulfilled performance obligation		$ 1,300
Expected period to satisfy performance obligations		1 year
Revenue, remaining performance obligation, percentage		61%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-01-01
Revenue From Contract With Customer [Line Items]
Expected period to satisfy performance obligations		1 year
Revenue, remaining performance obligation, percentage		73%
Subsequent Event
Revenue From Contract With Customer [Line Items]
Reduced amount of unfulfilled performance obligations	$ 245

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Summary of Effect of Swaps on Company's Financial Statements (Details) - Interest Rate Swaps - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Total Gain (Loss) Recorded to AOCI	$ 5,996	$ (45)
Amount of (Gain) or Loss Reclassified from AOCI into Income	$ (6,244)	$ (6,982)

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Additional Information (Details)	12 Months Ended
	Dec. 31, 2024 USD ($)
Derivative [Line Items]
Unrealized gains from Swaps expected to be reclassified from AOCI into earnings	$ 800,000
Estimate of time to transfer of unrealized gains from Swaps to be reclassified from AOCI into earnings	12 months
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swaps
Derivative [Line Items]
Notional amount	$ 275,000,000
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swaps | June 27, 2028
Derivative [Line Items]
Notional amount	$ 100,000,000
Maturity date	Jun. 27, 2028
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swaps | February 28, 2025
Derivative [Line Items]
Notional amount	$ 100,000,000
Maturity date	Feb. 28, 2025
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swaps | February 28, 2028
Derivative [Line Items]
Notional amount	$ 75,000
Maturity date	Feb. 28, 2028

Income Taxes - Income Before In

Income Taxes - Income Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Domestic	$ 134,068	$ 83,742	$ 80,372
Foreign	3,990	12,805	3,608
Income before income taxes	$ 138,058	$ 96,547	$ 83,980

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current:
Federal	$ 41,276	$ 28,108	$ 8,413
State	16,851	10,380	2,686
Foreign	1,647	2,247	1,661
Total current	59,774	40,735	12,760
Deferred:
Federal	(21,055)	(20,279)	4,264
State	(10,861)	(6,915)	3,607
Foreign	30	394	(894)
Total deferred	(31,886)	(26,800)	6,977
Income tax expense	$ 27,888	$ 13,935	$ 19,737

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets
Allowance for expected credit losses	$ 1,648	$ 1,213
Accrued paid time off	3,525	3,039
State net operating loss carry forward	456	500
Stock based compensation	6,076	5,523
Deferred compensation	6,568	5,765
Foreign tax credits	8,151	8,035
State tax credits	1,923	686
Foreign exchange	4,345	3,591
Foreign deferred	333	441
Accrued bonus	6,393	5,830
Capital loss	1,020	1,054
Facilities impairment	2,611	3,092
Capitalized research expenses	70,617	47,019
Depreciation	402	0
Accrued liabilities and other	1,364	2,682
Lease liabilities	54,263	58,538
Deferred Tax Assets, gross, before valuation allowance	169,695	147,008
Less: Valuation Allowance	(9,627)	(9,021)	$ (7,607)	$ (7,048)
Total Deferred Tax Assets	160,068	137,987
Deferred Tax Liabilities
Payroll taxes	(939)	(725)
Unbilled revenue	(184)	(284)
Depreciation	0	(2,128)
Amortization	(108,009)	(107,201)
Deferred gain and other	(2,543)	(2,202)
Lease assets - right-of-use	(46,790)	(51,622)
Total Deferred Tax Liabilities	(158,465)	(164,162)
Total Net Deferred Tax (Liabilities)		$ (26,175)
Total Net Deferred Tax Assets	$ 1,603

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes [Line Items]
Deferred tax assets and liabilities income tax rate expected to reverse in future	27%
Increase in valuation allowance	$ 100
Increase in cumulative foreign tax credit carryforward	100
Income taxes provided for additional outside basis difference inherent in entities as result of reinvestment	5,000
Operating loss carryforwards valuation allowance	500
Deferred tax assets, tax credit carryforwards	1,923	$ 686
Deferred tax assets, valuation allowance	9,627	9,021	$ 7,607	$ 7,048
Valuation allowance, deferred tax asset, increase (decrease), amount	606	1,414	559
Unrecognized tax benefits	25,840	24,131	$ 145	$ 450
Unrecognized tax benefits that would impact effective tax rate	$ 15,000	$ 9,000
Decrease in effective income tax rates	2%	6.40%
Increase in unrecognized tax benefits	$ 23,600	$ 28,100
Minimum
Income Taxes [Line Items]
Operating loss carryforwards expiration term	15 years
Maximum
Income Taxes [Line Items]
Operating loss carryforwards expiration term	20 years
Internal Revenue Service (IRS)
Income Taxes [Line Items]
Open tax year	2021 2022 2023
State and Foreign Jurisdictions
Income Taxes [Line Items]
Open tax year	2020 2021 2022 2023
Canadian Entities [Member]
Income Taxes [Line Items]
Decrease in effective income tax rates		3.80%
UK Subsidiaries [Member]
Income Taxes [Line Items]
Decrease in effective income tax rates		5.10%
Capital Loss Carryforward
Income Taxes [Line Items]
Deferred tax assets, valuation allowance	$ 1,000
Foreign Tax Authority
Income Taxes [Line Items]
Research and development costs amortization period	15 years
Valuation allowance, deferred tax asset, increase (decrease), amount	$ 8,100
Domestic Tax Authority
Income Taxes [Line Items]
Research and development costs amortization period	5 years
Operating loss carryforwards	$ 5,900
Domestic Tax Authority | Minimum
Income Taxes [Line Items]
Net operating loss carryforwards, expiration year	2029
Domestic Tax Authority | Maximum
Income Taxes [Line Items]
Net operating loss carryforwards, expiration year	2034
State Jurisdiction
Income Taxes [Line Items]
Tax credit carryforward, amount	$ 2,400
Deferred tax assets, tax credit carryforwards	1,900
Deferred tax assets, valuation allowance	$ 400
State Jurisdiction | Earliest Tax Year
Income Taxes [Line Items]
Tax credit carryforwards, expiration year	2025
State Jurisdiction | Latest Tax Year
Income Taxes [Line Items]
Tax credit carryforwards, expiration year	2035

Income Taxes - Components of Un

Income Taxes - Components of Unrecognized Tax Benefits, Excluding Penalty and Interest (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Income Tax Contingency [Line Items]
Section 41 tax credit	$ 15,042	$ 8,736
Section 174 expense capitalization	10,798	15,086
Total	$ 25,840	24,131
U.S
Income Tax Contingency [Line Items]
Transfer pricing		145
India
Income Tax Contingency [Line Items]
Transfer pricing		$ 164

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefit Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Unrecognized tax benefits, beginning balance	$ 24,131	$ 145	$ 450
Decrease attributable to tax positions taken during the current period			(305)
Increase attributable to tax positions taken during a prior period		19,845
Decrease attributable to tax positions taken during a prior period	(4,597)
Increase attributable to tax positions taken during the current period	6,306	4,141
Unrecognized tax benefits, ending balance	$ 25,840	$ 24,131	$ 145

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Taxes at statutory rate	21%	21%	21%
State taxes, net of federal benefit	6%	6%	5.80%
Foreign tax rate differential	(0.10%)	(0.20%)	0.10%
Executive compensation	1.80%	1.70%	2.20%
Other permanent differences	(0.40%)	(0.30%)	2%
Global intangible low-taxed income (GILTI)		0.30%
Prior year tax adjustments	(2.00%)	(6.40%)	(1.10%)
Deferred impact of state rate change	0.10%	0.50%	0.60%
Worthless Stock Deduction		(5.10%)	(4.60%)
Unrecognized tax benefits	4%	9%	(0.40%)
Capital loss		(3.80%)
Valuation allowance	1.30%	2%	0.70%
Equity-based compensation	(1.70%)	(1.10%)	(1.30%)
Tax credits	(9.80%)	(9.20%)	(1.50%)
Taxes at effective rate	20.20%	14.40%	23.50%

Stockholders' Equity - Componen

Stockholders' Equity - Components of Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income Loss [Line Items]
Balance		$ 917,585	$ 853,211	$ 803,470
Current period other comprehensive income (loss):
Total current period other comprehensive income (loss)		(3,861)	(3,752)	2,902
Balance		982,459	917,585	853,211
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance		(12,695)	(14,056)	(8,759)
Current period other comprehensive income (loss):
Other comprehensive income (loss) before reclassifications		(3,884)	4,158	(9,259)
Effect of taxes	[1]	196	(2,797)	3,962
Total current period other comprehensive income (loss)		(3,688)	1,361	(5,297)
Balance		(16,383)	(12,695)	(14,056)
Changes in Fair Value of Interest Rate Hedge Agreements
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	[2],[3]	810	5,923	(2,276)
Current period other comprehensive income (loss):
Other comprehensive income (loss) before reclassifications	[2],[3]	5,996	(45)	11,445
Amounts reclassified from accumulated other comprehensive (loss) income	[2],[3]	(6,244)	(6,982)	(248)
Effect of taxes	[1],[2],[3]	75	1,914	(2,998)
Total current period other comprehensive income (loss)	[2],[3]	(173)	(5,113)	8,199
Balance	[2],[3]	637	810	5,923
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance		(11,885)	(8,133)	(11,035)
Current period other comprehensive income (loss):
Other comprehensive income (loss) before reclassifications		2,112	4,113	2,186
Amounts reclassified from accumulated other comprehensive (loss) income		(6,244)	(6,982)	(248)
Effect of taxes	[1]	271	(883)	964
Total current period other comprehensive income (loss)		(3,861)	(3,752)	2,902
Balance		$ (15,746)	$ (11,885)	$ (8,133)
[1] The Company’s effective tax rate for the years ended December 31, 2024, 2023, and 2022 was 20.2 % , 14.4 % , and 23.5 % , respectively. 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 through June 27, 2028. See additional details of the hedge agreements in Note 12 - Derivative Instruments and Hedging Activities. The Company expects to reclassify $ 0.8 million in unrealized gains related to the Change in Fair Value of Interest Rate Hedge Agreement from accumulated other comprehensive loss into earnings during the next 12 months.

Stockholders' Equity - Compon_2

Stockholders' Equity - Components of Accumulated Other Comprehensive (Loss) Income (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Effective tax rate	20.20%	14.40%	23.50%
Expects to reclassify net gains related to change in fair value of interest rate hedge agreement from accumulated other comprehensive loss into earnings	$ 0.8

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount	$ 300,000,000
Share repurchase amount	$ 25,000,000
Line of credit facility, condition permitted for unlimited share repurchases, leverage ratio	0.5
Net liquidity amount	$ 100,000,000
Stock Repurchased During Period, Value	$ 44,400,000	$ 18,100,000
Stock Repurchased During Period, Shares | shares	327,321	180,000
Average price per share | $ / shares	$ 135.77	$ 100.7
Employee stock purchase plan shares authorized | shares	1,000,000
Employee stock purchase plan annual maximum payroll deduction	$ 25,000
Share-based compensation arrangement by share-based payment award, discount from market price, purchase date	5%
Stock issued during period, shares, employee stock purchase plans | shares	40,987	36,140
Stock issued during period, value, employee stock purchase plans, per share | $ / shares	$ 125.2	$ 121.96
Employee stock purchase plan, number of shares available for grant | shares	507,845	548,832
Credit Facility
Equity Class Of Treasury Stock [Line Items]
Share repurchase amount	$ 149,300,000

Stock-based Compensation - Addi

Stock-based Compensation - Additional Information (Details) $ / shares in Units, $ in Millions		12 Months Ended
	Apr. 04, 2018 shares	Dec. 31, 2024 USD ($) PerformancePeriod $ / shares shares	Dec. 31, 2023 USD ($) PerformancePeriod shares	Dec. 31, 2022 USD ($) PerformancePeriod shares	Dec. 31, 2021 shares	Dec. 31, 2015 PerformancePeriod
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Excess income tax benefits related to stock-based compensation | $		$ 2.4	$ 1.1	$ 1.1
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period		3 years
Share price | $ / shares		$ 119.21
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value | $		$ 10.3	$ 7.3	$ 10.8
Number of shares, granted		86,428	89,388	148,361
Number of shares, vested		107,168	93,881	140,666
Cash Settled RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period		3 years
Share price | $ / shares		$ 119.21
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value | $		$ 7.8	$ 7.9	$ 6.6
Number of shares, granted		38,653	70,742	115,024
Number of shares, vested		58,078	81,537	75,566
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share price | $ / shares		$ 119.21
Number of performance period in performance based share program | PerformancePeriod		1	2	3		2
Percentage of multiplication award by product		2%
Number of shares, granted		41,365	36,956	38,412	46,630
Number of shares, vested		46,630	45,141	47,634
Number of shares, expected to vest		59,863
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	2,050,000
Share-based compensation arrangement by share-based payment award, number of shares available for grant		1,016,040
Omnibus Plan | Non-Employee Director Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share price | $ / shares		$ 119.21
Number of shares, granted		6,618	8,211	11,399
Number of shares, vested		7,414	9,457	11,637

Stock-based Compensation - Sche

Stock-based Compensation - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Recognized	$ 25,063	$ 22,919	$ 18,880
Stock-Based Compensation Unrecognized	27,143
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Recognized	10,654	9,413	9,300
Stock-Based Compensation Unrecognized	$ 13,910
Stock-Based Compensation Unrecognized Weighted- Average Period to Recognize (Years)	1 year 6 months
Cash Settled RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Recognized	$ 8,341	8,061	5,709
Stock-Based Compensation Unrecognized	$ 7,648
Stock-Based Compensation Unrecognized Weighted- Average Period to Recognize (Years)	1 year 3 months 18 days
Non-Employee Director Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Recognized	$ 972	1,029	1,087
Stock-Based Compensation Unrecognized	$ 408
Stock-Based Compensation Unrecognized Weighted- Average Period to Recognize (Years)	4 months 24 days
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Recognized	$ 5,096	$ 4,416	$ 2,784
Stock-Based Compensation Unrecognized	$ 5,177
Stock-Based Compensation Unrecognized Weighted- Average Period to Recognize (Years)	1 year 4 months 24 days

Stock-based Compensation - Rest

Stock-based Compensation - Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Non-vested Beginning Balance	258,518	284,826	303,836
Number of Shares, Granted	86,428	89,388	148,361
Number of Shares, Vested	(107,168)	(93,881)	(140,666)
Number of Shares, Cancelled	(26,807)	(21,815)	(26,705)
Number of Shares, Non-vested Ending Balance	210,971	258,518	284,826
Number of Shares, expected to vest in the future	192,949
Weighted-Average Grant Date Fair Value, Non-vested Beginning Balance	$ 99.25	$ 88.23	$ 79.17
Weighted-Average Grant Date Fair Value, Granted	153.22	110.80	93.70
Weighted-Average Grant Date Fair Value, Vested	95.65	78.05	76.53
Weighted-Average Grant Date Fair Value, Cancelled	109.79	94.01	77.16
Weighted-Average Grant Date Fair Value, Non-vested Ending Balance	121.86	$ 99.25	$ 88.23
Weighted-Average Grant Date Fair Value, expected to vest in the future	$ 120.99
Aggregate Intrinsic Value, Non-vested	$ 25,150
Aggregate Intrinsic Value, expected to vest in the future	$ 23,002

Stock-based Compensation - Cash

Stock-based Compensation - Cash-settled Restricted Stock Unit Activity (Details) - Cash Settled RSUs - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Non-vested Beginning Balance	158,584	188,419	166,260
Number of Shares, Granted	38,653	70,742	115,024
Number of Shares, Vested	(58,078)	(81,537)	(75,566)
Number of Shares, Cancelled	(9,424)	(19,040)	(17,299)
Number of Shares, Non-vested Ending Balance	129,735	158,584	188,419
Number of Shares, expected to vest in the future	117,615
Weighted-Average Grant Date Fair Value, Non-vested Beginning Balance	$ 102.82	$ 87.28	$ 72.79
Weighted-Average Grant Date Fair Value, Granted	153.15	110.65	97.88
Weighted-Average Grant Date Fair Value, Vested	99.30	76.26	73.20
Weighted-Average Grant Date Fair Value, Cancelled	114.93	91.94	80.02
Weighted-Average Grant Date Fair Value, Non-vested Ending Balance	118.51	$ 102.82	$ 87.28
Weighted-Average Grant Date Fair Value, expected to vest in the future	$ 117.55
Aggregate Intrinsic Value, Non-vested	$ 15,466,000
Aggregate Intrinsic Value, expected to vest in the future	$ 14,021,000

Stock-based Compensation - Summ

Stock-based Compensation - Summary of Non-employee Director Awards Activity (Details) - Non-Employee Director Awards - Omnibus Plan - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Non-vested Beginning Balance	4,102	5,348	5,586
Number of Shares, Granted	6,618	8,211	11,399
Number of Shares, Vested	(7,414)	(9,457)	(11,637)
Number of Shares, Non-vested Ending Balance	3,306	4,102	5,348
Number of Shares, expected to vest in the future	3,306
Weighted-Average Grant Date Fair Value, Non-vested Beginning Balance	$ 127.81	$ 94.79	$ 90.73
Weighted-Average Grant Date Fair Value, Granted	135.91	127.81	95.35
Weighted-Average Grant Date Fair Value, Vested	131.43	109.14	93.39
Weighted-Average Grant Date Fair Value, Non-vested Ending Balance	135.91	$ 127.81	$ 94.79
Weighted-Average Grant Date Fair Value, expected to vest in the future	$ 135.91
Aggregate Intrinsic Value, Non-vested	$ 394
Aggregate Intrinsic Value, expected to vest in the future	$ 394

Stock-based Compensation - Su_2

Stock-based Compensation - Summary of Performance Shares Activity (Details) - Performance Shares - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of Shares
Number of Shares, Non-vested Beginning Balance	105,568	120,687	133,079
Number of Shares, Granted	41,365	36,956	38,412	46,630
Number of Shares, Vested	(46,630)	(45,141)	(47,634)
Number of Shares, Cancelled	(4,198)	(6,934)	(3,170)
Number of Shares, Non-vested Ending Balance	96,105	105,568	120,687	133,079
Number of Shares, expected to vest in the future	59,863
Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Non-vested Beginning Balance	$ 102.12	$ 79.42	$ 76.54
Weighted-Average Grant Date Fair Value, Granted	143.97	115.67	93.15
Weighted-Average Grant Date Fair Value, Vested	95.72	58.76	82.38
Weighted-Average Grant Date Fair Value, Cancelled	114.91	61.49	80.64
Weighted-Average Grant Date Fair Value, Non-vested Ending Balance	122.68	$ 102.12	$ 79.42	$ 76.54
Weighted-Average Grant Date Fair Value, expected to vest in the future	$ 138.01
Aggregate Intrinsic Value
Aggregate Intrinsic Value, Non-vested	$ 11,457
Aggregate Intrinsic Value, expected to vest in the future	$ 7,136

Stock-based Compensation - Sc_2

Stock-based Compensation - Schedule of Fair Value Assumptions using Monte Carlo Simulation Model for Awards Granted (Details) - Performance Shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend Yield	0.40%	0.50%	0.60%
Historical Volatility	29.30%	33.60%	39%
Risk-Free Rate of Returns	4.40%	3.80%	2.10%

Acquisitions and Divestitures -

Acquisitions and Divestitures - Additional Information (Details) - USD ($) $ in Thousands							12 Months Ended
	Dec. 31, 2024	Nov. 01, 2023	Sep. 12, 2023	May 01, 2023	Sep. 01, 2022	Jul. 13, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Acquisition and Divestiture [Line Items]
Goodwill	$ 1,248,855						$ 1,248,855	$ 1,219,476	$ 1,212,898
Revenue							2,019,787	1,963,238	1,779,964
Business Acquisition and Integration Related Costs							4,300
Proceeds from divestiture of a business							1,985	51,328
Gain on divestiture							2,009	7,590
Commercial Marketing
Acquisition and Divestiture [Line Items]
Asset purchase agreement date			Sep. 12, 2023
Proceeds from divestiture of a business			$ 47,100
Pre-tax gain on divestiture, net of transactions fees							$ 2,000	$ 2,500
Mobile Aggregation Business
Acquisition and Divestiture [Line Items]
Initial cash consideration		$ 5,400
Pre-tax gain on divestiture, net of transactions fees		$ 3,200
Applied Energy Group, Inc.
Acquisition and Divestiture [Line Items]
Business acquisition date	Dec. 31, 2024
Business acquisition, description							Applied Energy Group, Inc. (“AEG”), an energy technology and advisory services company
Working capital acquired	$ 4,049						$ 4,049
Purchase price allocated to property and equipment	55						55
Cash purchase price	60,700
Restricted cash	5,600						5,600
Accounts receivable	4,500						4,500
Accrued expenses	5,700						5,700
Applied Energy Group, Inc. | Trade Names and Trademarks
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles	$ 350						$ 350
Weighted average amortization period for intangibles	1 year
CMY Solutions, LLC.
Acquisition and Divestiture [Line Items]
Business acquisition date				May 01, 2023
Working capital acquired				$ 1,169
Cash purchase price				32,600
CMY Solutions, LLC. | Trade Names and Trademarks
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles				$ 100
Weighted average amortization period for intangibles				1 year
Blanton & Associates
Acquisition and Divestiture [Line Items]
Working capital acquired					$ 4,604
Purchase price allocated to property and equipment					159
Deferred income tax liabilities					3,023
Cash purchase price					22,900
Blanton & Associates | Trade Names and Trademarks
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles					$ 60
Weighted average amortization period for intangibles					3 months 18 days
Blanton & Associates | Contract Backlog
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles					$ 466
Weighted average amortization period for intangibles					3 years
SemanticBits LLC
Acquisition and Divestiture [Line Items]
Deferred income tax liabilities						$ 16,701
Cash purchase price						216,000
Accrued expenses						(6,244)
Revenue									64,300
Gross Profit									$ 26,700
SemanticBits LLC | Trade Names and Trademarks
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles						$ 1,120
Weighted average amortization period for intangibles						8 months 12 days

Acquisitions and Divestitures_2

Acquisitions and Divestitures - Summary of Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands				12 Months Ended
	May 01, 2023	Sep. 01, 2022	Jul. 13, 2022	Dec. 31, 2024
Applied Energy Group, Inc.
Acquisition and Divestiture [Line Items]
Net working capital				$ 4,049
Property and equipment				55
Accrued expenses and other liabilities				5,700
Goodwill				30,200
Purchase price acquisition				60,654
Applied Energy Group, Inc. | Customer-Related Intangibles
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles				21,000
Applied Energy Group, Inc. | Developed Technology
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles				5,000
Applied Energy Group, Inc. | Trade Names and Trademarks
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles				$ 350
CMY Solutions, LLC.
Acquisition and Divestiture [Line Items]
Net working capital	$ 1,169
Goodwill	21,366
Purchase price acquisition	32,535
CMY Solutions, LLC. | Customer-Related Intangibles
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles	9,900
CMY Solutions, LLC. | Trade Names and Trademarks
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles	$ 100
Blanton & Associates
Acquisition and Divestiture [Line Items]
Net working capital		$ 4,604
Property and equipment		159
Deferred tax liability		(3,023)
Goodwill		9,712
Purchase price acquisition		22,897
Blanton & Associates | Customer-Related Intangibles
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles		10,919
Blanton & Associates | Contract Backlog
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles		466
Blanton & Associates | Trade Names and Trademarks
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles		$ 60
SemanticBits LLC
Acquisition and Divestiture [Line Items]
Contract receivables, net			$ 12,699
Contract assets			6,071
Other current and non-current assets			407
Accrued salaries and benefits			(3,998)
Accrued expenses and other liabilities			(6,244)
Deferred tax liability			(16,701)
Net assets acquired			56,321
Goodwill			159,677
Purchase price acquisition			215,998
SemanticBits LLC | Customer-Related Intangibles
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles			62,967
SemanticBits LLC | Trade Names and Trademarks
Acquisition and Divestiture [Line Items]
Purchase price allocated to intangibles			$ 1,120

Acquisitions and Divestitures_3

Acquisitions and Divestitures - Summary of Estimated Useful Lives of Acquired Intangible Assets (Details)	Dec. 31, 2024	May 01, 2023	Sep. 01, 2022	Jul. 13, 2022
Applied Energy Group, Inc. | Customer-Related Intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets	9 years
Applied Energy Group, Inc. | Developed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets	6 years
Applied Energy Group, Inc. | Trade Names and Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets	1 year
CMY Solutions, LLC. | Customer-Related Intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets		5 years
CMY Solutions, LLC. | Trade Names and Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets		1 year
Blanton & Associates | Customer-Related Intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets			11 years
Blanton & Associates | Contract Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets			3 years
Blanton & Associates | Trade Names and Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets			3 months 18 days
SemanticBits LLC | Customer-Related Intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets				4 years
SemanticBits LLC | Trade Names and Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of acquired intangible assets				8 months 12 days

Acquisitions and Divestitures_4

Acquisitions and Divestitures - Schedule of Unaudited Condensed Pro Forma Financial Information (Details) - Semantic Bits L L C [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Acquisition and Divestiture [Line Items]
Revenue	$ 1,856,399
Net income	$ 75,999

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Details)	12 Months Ended
	Dec. 31, 2024
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	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Net income	$ 110,170	$ 82,612	$ 64,243
Weighted-average number of basic shares outstanding during the period	18,747	18,802	18,818
Dilutive effect of stock options, RSUs, and performance shares	178	192	215
Weighted-average number of diluted shares outstanding during the period	18,925	18,994	19,033
Basic earnings per share	$ 5.88	$ 4.39	$ 3.41
Diluted earnings per share	$ 5.82	$ 4.35	$ 3.38

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	Dec. 31, 2024	Dec. 31, 2023
Interest Rate Swap | Prepaid Expenses and Other Current Assets
Assets:
Assets, Total	$ 825	$ 4,820
Interest Rate Swap | Other Assets
Assets:
Assets, Total	129	398
Interest Rate Swap | Other Long-Term Liabilities
Liabilities:
Liabilities, Total	153
Interest Rate Swap | Accrued Expenses and Other Current Liabilities
Liabilities:
Liabilities, Total	15
Foreign Currency Forward and Swap Contracts | Prepaid Expenses and Other Current Assets
Assets:
Assets, Total		6
Company Owned Life Insurance Policies | Other Assets
Assets:
Assets, Total	23,174	20,438
Level 2 | Interest Rate Swap | Prepaid Expenses and Other Current Assets
Assets:
Assets, Total	825	4,820
Level 2 | Interest Rate Swap | Other Assets
Assets:
Assets, Total	129	398
Level 2 | Interest Rate Swap | Other Long-Term Liabilities
Liabilities:
Liabilities, Total	153
Level 2 | Interest Rate Swap | Accrued Expenses and Other Current Liabilities
Liabilities:
Liabilities, Total	15
Level 2 | Foreign Currency Forward and Swap Contracts | Prepaid Expenses and Other Current Assets
Assets:
Assets, Total		6
Level 2 | Company Owned Life Insurance Policies | Other Assets
Assets:
Assets, Total	$ 23,174	$ 20,438

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Letters of credit	$ 1.6
Standby Letters of Credit
Loss Contingencies [Line Items]
Letters of credit	1.6	$ 1.8
Letters of credit guarantees	$ 8.2	$ 7.9

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Maximum defer of compensation subject to statutory limitations, percentage	70%
Percentage of employer matching contributions condition, one	100%
Percentage of employee entitled to employer matching contribution condition, one	3%
Percentage of employer matching contributions condition, two	50%
Percentage of employee entitled to employer matching contribution condition, two	2%
Defined contribution plan, employer discretionary contribution amount	$ 26,800,000	$ 25,400,000	$ 22,900,000
Deferred compensation arrangement with individual, cash awards granted, percentage	80%
Deferred compensation on performance bonuses that eligible employee, percentage	100%
Defined contribution plan, employers matching contribution, annual vesting percentage	100%
Liability to plan participants	$ 24,300,000
Employee stock purchase plan shares authorized	1,000,000
Employee stock purchase plan annual maximum payroll deduction	$ 25,000
Share-based compensation arrangement by share-based payment award, discount from market price, purchase date	5%
Stock issued during period, shares, employee stock purchase plans	40,987	36,140
Stock issued during period, value, employee stock purchase plans, per share	$ 125.2	$ 121.96
Employee stock purchase plan, number of shares available for grant	507,845	548,832

Exit Activities - Additional In

Exit Activities - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
U.K. and Belgium
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Exit activity completed date	Dec. 31, 2023
Indirect and Selling Expenses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Compensation expense related to sale of business	$ 0.6
Certain Non-Core Commercial Marketing Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of right-of-use operating leases and related assets associated with exited facilities		$ 8.2
Retention and severance paid		1.3
Certain Non-Core Commercial Marketing Businesses | Indirect and Selling Expenses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other facility costs		4.8
Certain Non-Core Commercial Marketing Businesses | Direct Costs
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Retention and severance		2.3
Wind-down of Non-core Commercial Marketing and Communication Businesses | U.K. and Belgium
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Retention and severance incurred and paid	2.5
Divestiture of Non-core Commercial Marketing Businesses | Direct Costs
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Retention and severance	1.9	$ 1.7
Wind Down and Divestiture of Commercial Marketing Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment related to customer related intangible from prior acquisition	0.9
Impairment related to right-of-use operating leases	3
Impairment related to accrued other facility related exit costs	$ 2.4

Segment Information and Geogr_3

Segment Information and Geographic Data - Additional Information (Details)	12 Months Ended
	Dec. 31, 2024 ForeignCountry Segment	Dec. 31, 2023 ForeignCountry	Dec. 31, 2022 ForeignCountry
Segment Reporting [Abstract]
Number of Operating Segments | Segment	1
Number of Reportable Segments | Segment	1
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	The CODM assesses performance of the segment based on consolidated net income that is reported on the Company’s consolidated statements of comprehensive income. The CODM uses consolidated net income to evaluate the Company’s performance against budgets and decide whether to use the profits to invest in the business, paydown debt, repurchase stock, pay dividends, or fund acquisitions.
Number of foreign country individually accounted for 10% or more of total revenue | ForeignCountry	0	0	0
Number of foreign country individually held more than 10% of total long-lived assets | ForeignCountry	0	0

Segment Information and Geogr_4

Segment Information and Geographic Data - Schedule of Segment Revenue, Significant Segment Expenses, and Segment Profit (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reconciliation [Abstract]
Revenue		$ 2,019,787	$ 1,963,238	$ 1,779,964
Significant segment expenses:
Direct labor & related fringe costs		775,239	730,322	639,861
Subcontractors & other direct costs		506,777	534,696	494,561
Indirect and selling expenses		518,453	505,162	486,863
Depreciation and amortization		20,484	25,277	21,482
Amortization of Intangible Assets		32,992	35,461	28,435
Interest expense		29,878	39,952	23,525
Provision for income taxes		27,888	13,935	19,737
Other segment (income) expense	[1]	(2,094)	(4,179)	1,257
Net income		$ 110,170	$ 82,612	$ 64,243
[1] Other segment income (expenses) includes interest income, foreign currency expense, and gains/losses on disposition of assets.

Segment Information and Geogr_5

Segment Information and Geographic Data - Schedule of Net Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Revenue From Home and Foreign Countries [Line Items]
Total revenue	$ 2,019,787	$ 1,963,238	$ 1,779,964
U.S.
Segment Reporting Revenue From Home and Foreign Countries [Line Items]
Total revenue	1,869,105	1,832,562	1,644,737
Other Countries
Segment Reporting Revenue From Home and Foreign Countries [Line Items]
Total revenue	$ 150,682	$ 130,676	$ 135,227

Segment Information and Geogr_6

Segment Information and Geographic Data - Schedule of Long-lived Assets Held (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 68,118	$ 75,948
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	65,045	71,791
Other Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 3,073	$ 4,157

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		2 Months Ended	12 Months Ended
	Feb. 25, 2025	Feb. 25, 2025	Dec. 31, 2024	Dec. 31, 2023
Subsequent Event [Line Items]
Stock Repurchased During Period, Shares			327,321	180,000
Share repurchase amount			$ 44.4	$ 18.1
Average price per share			$ 135.77	$ 100.7
Subsequent Event
Subsequent Event [Line Items]
Stock Repurchased During Period, Shares	258,218
Share repurchase amount	$ 30.5
Average price per share	$ 118.14
Stop work orders amount		$ 99
Loss on termination for convenience		$ 276

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 5,435	$ 6,112	$ 7,741
Provision for credit losses	1,673	1,164	248
Write-offs, net of recoveries	(357)	(1,886)	(1,782)
Effect of foreign currency translation	(50)	45	(95)
Balance at end of period	$ 6,701	$ 5,435	$ 6,112

Schedule II - Valuation and Q_3

Schedule II - Valuation and Qualifying Accounts - Schedule of Income Tax Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Valuation Allowance [Abstract]
Balance at beginning of period	$ 9,021	$ 7,607	$ 7,048
Provision for income taxes - valuation allowance	606	1,414	559
Balance at end of period	$ 9,627	$ 9,021	$ 7,607