CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue	$ 413,468	$ 378,478
Direct costs	258,158	232,082
Operating costs and expenses:
Indirect and selling expenses	117,452	109,982
Depreciation and amortization	4,838	5,270
Amortization of intangible assets	5,317	3,015
Total operating costs and expenses	127,607	118,267
Operating income	27,703	28,129
Interest expense	(2,697)	(2,683)
Other expense	(369)	(417)
Income before income taxes	24,637	25,029
Provision for income taxes	6,775	6,678
Net income	$ 17,862	$ 18,351
Earnings per Share:
Basic	$ 0.95	$ 0.97
Diluted	$ 0.94	$ 0.96
Weighted-average Shares:
Basic	18,795	18,885
Diluted	19,012	19,118
Cash dividends declared per common share	$ 0.14	$ 0.14
Other comprehensive income, net of tax	$ 2,659	$ 2,780
Comprehensive income, net of tax	$ 20,521	$ 21,131