CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 467,777	$ 394,060	$ 1,304,355	$ 1,165,063
Direct costs	307,295	254,175	834,358	732,903
Operating costs and expenses:
Indirect and selling expenses	118,290	99,940	350,145	316,100
Depreciation and amortization	5,297	4,665	15,198	14,663
Amortization of intangible assets	8,661	3,015	18,941	9,049
Total operating costs and expenses	132,248	107,620	384,284	339,812
Operating income	28,234	32,265	85,713	92,348
Interest expense	(7,474)	(2,550)	(14,274)	(7,845)
Other income (expense)	887	81	616	(382)
Income before income taxes	21,647	29,796	72,055	84,121
Provision for income taxes	2,542	9,406	16,691	25,068
Net income	$ 19,105	$ 20,390	$ 55,364	$ 59,053
Earnings per Share:
Basic	$ 1.01	$ 1.08	$ 2.94	$ 3.13
Diluted	$ 1.01	$ 1.07	$ 2.91	$ 3.10
Weighted-average Shares:
Basic	18,826	18,865	18,806	18,864
Diluted	19,009	19,061	19,001	19,077
Cash dividends declared per common share	$ 0.14	$ 0.14	$ 0.42	$ 0.42
Other comprehensive (loss) income, net of tax	$ (1,555)	$ (1,971)	$ (3,107)	$ 1,241
Comprehensive income, net of tax	$ 17,550	$ 18,419	$ 52,257	$ 60,294