CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 500,085	$ 423,110	$ 983,367	$ 836,578
Direct costs:
Direct costs	325,404	268,905	637,969	527,063
Operating costs and expenses:
Indirect and selling expenses	126,522	114,403	250,255	231,855
Depreciation and amortization	6,826	5,063	13,135	9,901
Amortization of intangible assets	9,286	4,963	18,510	10,280
Total operating costs and expenses	142,634	124,429	281,900	252,036
Operating income	32,047	29,776	63,498	57,479
Interest, net	(10,132)	(4,049)	(19,589)	(6,676)
Other (expense) income	(677)	44	(1,235)	(395)
Income before income taxes	21,238	25,771	42,674	50,408
Provision for income taxes	926	7,374	5,964	14,149
Net income	$ 20,312	$ 18,397	$ 36,710	$ 36,259
Earnings per Share:
Basic	$ 1.08	$ 0.98	$ 1.95	$ 1.93
Diluted	$ 1.07	$ 0.97	$ 1.94	$ 1.91
Weighted-average Shares:
Basic	18,791	18,796	18,785	18,795
Diluted	18,919	18,954	18,942	18,991
Cash dividends declared per common share	$ 0.14	$ 0.14	$ 0.28	$ 0.28
Other comprehensive income (loss), net of tax	$ 3,151	$ (4,211)	$ 1,817	$ (1,552)
Comprehensive income, net of tax	$ 23,463	$ 14,186	$ 38,527	$ 34,707