CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 358,238	$ 341,254
Direct costs	230,616	215,949
Operating costs and expenses:
Indirect and selling expenses	103,271	96,519
Depreciation and amortization	5,179	4,762
Amortization of intangible assets	2,853	2,135
Total operating costs and expenses	111,303	103,416
Operating income	16,319	21,889
Interest expense	(3,525)	(2,453)
Other income (expense)	190	(412)
Income before income taxes	12,984	19,024
Provision for income taxes	2,372	3,706
Net income	$ 10,612	$ 15,318
Earnings per Share:
Basic	$ 0.56	$ 0.81
Diluted	$ 0.55	$ 0.80
Weighted-average Shares:
Basic	18,840	18,825
Diluted	19,197	19,263
Cash dividends declared per common share	$ 0.14	$ 0.14
Other comprehensive (loss) income, net of tax	$ (11,123)	$ 283
Comprehensive (loss) income, net of tax	$ (511)	$ 15,601