Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Revenue	$ 1,872,851	$ 2,019,787	$ 1,963,238
Direct costs	1,176,835	1,282,016	1,265,018
Operating costs and expenses:
Indirect and selling expenses	492,404	518,453	505,162
Depreciation and amortization	58,147	53,476	60,738
Total operating costs and expenses	550,551	571,929	565,900
Operating income	145,465	165,842	132,320
Interest, net	(30,833)	(29,590)	(39,681)
Other (expense) income	(2,639)	1,806	3,908
Income before income taxes	111,993	138,058	96,547
Provision for income taxes	20,405	27,888	13,935
Net income	$ 91,588	$ 110,170	$ 82,612
Earnings per share:
Basic	$ 4.97	$ 5.88	$ 4.39
Diluted	$ 4.95	$ 5.82	$ 4.35
Weighted-average common shares outstanding:
Basic	18,414	18,747	18,802
Diluted	18,516	18,925	18,994
Cash dividends declared per common share	$ 0.56	$ 0.56	$ 0.56
Other comprehensive income (loss), net of tax	$ 2,318	$ (3,861)	$ (3,752)
Comprehensive income, net of tax	$ 93,906	$ 106,309	$ 78,860