CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenue	$ 516,998	$ 501,519	$ 1,523,463	$ 1,484,886
Direct costs:
Direct costs	325,047	323,504	964,911	961,473
Operating costs and expenses:
Indirect and selling expenses	132,816	131,553	389,001	381,808
Depreciation and amortization	4,820	5,917	15,303	19,052
Amortization of intangible assets	8,291	8,644	24,873	27,154
Total operating costs and expenses	145,927	146,114	429,177	428,014
Operating income	46,024	31,901	129,375	95,399
Interest, net	(7,195)	(10,557)	(23,136)	(30,146)
Other (expense) income	(899)	2,736	767	1,501
Income before income taxes	37,930	24,080	107,006	66,754
Provision for income taxes	5,251	340	21,399	6,304
Net income	$ 32,679	$ 23,740	$ 85,607	$ 60,450
Earnings per Share:
Basic	$ 1.74	$ 1.26	$ 4.57	$ 3.22
Diluted	$ 1.73	$ 1.25	$ 4.53	$ 3.19
Weighted-average Shares:
Basic	18,760	18,815	18,752	18,795
Diluted	18,910	18,974	18,915	18,958
Cash dividends declared per common share	$ 0.14	$ 0.14	$ 0.42	$ 0.42
Other comprehensive loss, net of tax	$ (951)	$ (4,053)	$ (610)	$ (2,236)
Comprehensive income, net of tax	$ 31,728	$ 19,687	$ 84,997	$ 58,214