Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Revenues	$ 169,341	$ 145,562
Cost of revenues (cost of services, exclusive of depreciation and amortization, shown separately below)
Cost of revenues (cost of services, exclusive of depreciation and amortization, shown separately below)	106,062	93,217
Selling, general and administrative	33,979	33,221
Depreciation	1,460	1,288
Amortization	7,052	3,922
Acquisition costs	68	1,813
Adjustment to fair value of contingent consideration	514	(335)
Income from operations	20,206	12,436
Net interest expense	3,296	1,926
Net other expense	122	7
Income before income taxes	16,788	10,503
Provision for income taxes	3,195	1,529
Net income	$ 13,593	$ 8,974
Basic net income per share (in dollars per share)	$ 0.43	$ 0.28
Diluted net income per share (in dollars per share)	$ 0.41	$ 0.27
Shares used in computing basic net income per share (in shares)	31,864	31,637
Shares used in computing diluted net income per share (in shares)	33,015	32,876