Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The Company’s revenue by client market, client type, and contract mix are summarized below.

	Year ended December 31,
	2025		2024		2023
Client Markets:
Energy, environment, infrastructure, and disaster recovery	$	979,137	$	934,399	$	805,942
Health and social programs		620,731		765,139		814,789
Security and other civilian & commercial		272,983		320,249		342,507
Total	$	1,872,851	$	2,019,787	$	1,963,238

	Year ended December 31,
	2025		2024		2023
Client Type:
U.S. federal government	$	809,073	$	1,088,607	$	1,084,047
U.S. state and local government		322,956		316,017		309,516
International government		119,131		110,680		103,446
Total Government		1,251,160		1,515,304		1,497,009
Commercial		621,691		504,483		466,229
Total	$	1,872,851	$	2,019,787	$	1,963,238

	Year ended December 31,
	2025		2024		2023
Contract Mix:
Time-and-materials	$	802,013	$	855,533	$	811,911
Fixed-price		932,659		932,353		886,200
Cost-based		138,179		231,901		265,127
Total	$	1,872,851	$	2,019,787	$	1,963,238

Schedule of Contract Assets and Liabilities and Changes in Contract Balances

The following table summarizes the contract balances as of December 31, 2025 and December 31, 2024:

	December 31, 2025			December 31, 2024			Change
Contract assets	$	186,684		$	188,941		$	(2,257	)
Contract liabilities (1)		(46,487	)		(24,580	)		(21,907	)
Net contract assets (liabilities)	$	140,197		$	164,361		$	(24,164	)

(1)Contract liabilities as of December 31, 2025 include $3.0 million of long-term contract liabilities that are part of “Other long-term liabilities” on the Company's consolidated balance sheets.