Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2025

Revenue from Contract with Customer [Abstract]

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.

	Three Months Ended March 31,
	2025					2024
	Dollars		Percent			Dollars		Percent
Client Markets:
Energy, environment, infrastructure, and disaster recovery	$	238,570		49	%	$	224,692		45	%
Health and social programs		169,023		35	%		190,892		39	%
Security and other civilian & commercial		80,025		16	%		78,852		16	%
Total	$	487,618		100	%	$	494,436		100	%

	Three Months Ended March 31,
	2025					2024
	Dollars		Percent			Dollars		Percent
Client Type:
U.S. federal government	$	239,620		49	%	$	274,195		55	%
U.S. state and local government		76,865		16	%		76,953		16	%
International government		27,075		5	%		25,263		5	%
Total Government		343,560		70	%		376,411		76	%
Commercial		144,058		30	%		118,025		24	%
Total	$	487,618		100	%	$	494,436		100	%

	Three Months Ended March 31,
	2025					2024
	Dollars		Percent			Dollars		Percent
Contract Mix:
Time-and-materials	$	209,046		43	%	$	206,153		42	%
Fixed-price		238,072		49	%		224,796		45	%
Cost-based		40,500		8	%		63,487		13	%
Total	$	487,618		100	%	$	494,436		100	%

Schedule of Contract Assets and Liabilities

The following table summarizes the contract assets and liabilities as of March 31, 2025 and December 31, 2024:

	March 31, 2025			December 31, 2024
Contract assets	$	228,314		$	188,941
Contract liabilities		(27,407	)		(24,580	)
Net contract assets (liabilities)	$	200,907		$	164,361