Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues
Revenues	$ 222,738	$ 184,136	$ 444,849	$ 353,477
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)	136,762	113,180	275,280	219,242
Selling, general and administrative	40,860	37,424	83,111	71,403
Depreciation	2,005	1,615	3,878	3,075
Amortization	5,998	6,333	11,977	13,385
Acquisition costs	61	0	360	68
Adjustment to fair value of contingent consideration	(2,487)	(510)	(3,466)	4
Income from operations	39,539	26,094	73,709	46,300
Net interest expense	805	3,367	1,692	6,663
Net other expense	153	9	386	131
Income before income taxes	38,581	22,718	71,631	39,506
Provision for income taxes	10,799	6,145	16,713	9,340
Net income	$ 27,782	$ 16,573	$ 54,918	$ 30,166
Basic net income per share (in dollars per share)	$ 0.82	$ 0.52	$ 1.62	$ 0.95
Diluted net income per share (in dollars per share)	$ 0.77	$ 0.49	$ 1.52	$ 0.90
Shares used in computing basic net income per share (in shares)	33,914	31,922	33,879	31,893
Shares used in computing diluted net income per share (in shares)	36,785	33,867	36,812	33,500