UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue	$ 373,122	$ 437,620	$ 1,168,309	$ 1,291,103
Direct costs	269,661	310,950	840,606	909,475
Gross profit	103,461	126,670	327,703	381,628
Selling, general and administrative expenses	86,226	94,306	258,558	285,502
Depreciation and amortization	1,202	1,045	3,776	3,214
Income from operations	16,033	31,319	65,369	92,912
Other expense (income), net	181	906	1,539	(333)
Income from operations, before income taxes	15,852	30,413	63,830	93,245
Income tax expense	5,277	8,151	18,471	24,886
Net income	10,575	22,262	45,359	68,359
Other comprehensive loss, net of tax:
Change in fair value of interest rate swaps	0	0	0	(615)
Comprehensive income	$ 10,575	$ 22,262	$ 45,359	$ 67,744
Earnings per share – basic (in dollars per share)	$ 0.55	$ 1.11	$ 2.35	$ 3.38
Earnings per share - diluted (in dollars per share)	$ 0.54	$ 1.09	$ 2.31	$ 3.31
Weighted average shares outstanding – basic (in shares)	19,158	20,022	19,317	20,206
Weighted average shares outstanding – diluted (in shares)	19,518	20,450	19,621	20,634