CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue	$ 501,519	$ 467,777	$ 1,484,886	$ 1,304,355
Direct costs:
Direct costs	323,504	307,295	961,473	834,358
Operating costs and expenses:
Indirect and selling expenses	131,553	118,290	381,808	350,145
Depreciation and amortization	5,917	5,297	19,052	15,198
Amortization of intangible assets	8,644	8,661	27,154	18,941
Total operating costs and expenses	146,114	132,248	428,014	384,284
Operating income	31,901	28,234	95,399	85,713
Interest, net	(10,557)	(7,420)	(30,146)	(14,096)
Other income	2,736	833	1,501	438
Income before income taxes	24,080	21,647	66,754	72,055
Provision for income taxes	340	2,542	6,304	16,691
Net income	$ 23,740	$ 19,105	$ 60,450	$ 55,364
Earnings per Share:
Basic	$ 1.26	$ 1.01	$ 3.22	$ 2.94
Diluted	$ 1.25	$ 1.01	$ 3.19	$ 2.91
Weighted-average Shares:
Basic	18,815	18,826	18,795	18,806
Diluted	18,974	19,009	18,958	19,001
Cash dividends declared per common share	$ 0.14	$ 0.14	$ 0.42	$ 0.42
Other comprehensive loss, net of tax	$ (4,053)	$ (1,555)	$ (2,236)	$ (3,107)
Comprehensive income, net of tax	$ 19,687	$ 17,550	$ 58,214	$ 52,257