UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 335,208	$ 326,738
Direct costs	240,684	233,562
Gross profit	94,524	93,176
Selling, general and administrative expenses	79,216	79,813
Depreciation and amortization	1,393	1,650
Income from operations	13,915	11,713
Other expense, net	1,381	923
Income from continuing operations, before income taxes	12,534	10,790
Income tax expense	3,428	2,816
Income from continuing operations	9,106	7,974
Income from discontinued operations, net of tax	0	18,881
Net income	9,106	26,855
Other comprehensive loss:
Change in fair value of interest rate swaps, net of tax	(1,121)	(280)
Comprehensive income	$ 7,985	$ 26,575
Earnings per share – basic:
Continuing operations (in dollars per share)	$ 0.42	$ 0.33
Discontinued operations (in dollars per share)	0	0.77
Earnings per share - basic (in dollars per share)	0.42	1.10
Earnings per share – diluted:
Continuing operations (in dollars per share)	0.42	0.32
Discontinued operations (in dollars per share)	0	0.75
Earnings per share – diluted (in dollars per share)	$ 0.42	$ 1.07
Weighted average shares outstanding – basic (in shares)	21,553	24,516
Weighted average shares outstanding – diluted (in shares)	21,860	25,019