Business Combinations - Aggregated Consideration And Preliminary Purchase Price Allocation (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 819,917	$ 740,743	$ 683,083
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Common stock issued (in shares)	42	207
Common stock value	$ 1,668	$ 6,940
Cash paid	79,141	66,651
Recorded contingent consideration	74,199	39,665
Total recorded purchase price	155,008	113,256
Accounts receivable acquired, net	20,429	9,838
Fixed assets acquired	1,933	1,473
Identifiable intangible assets acquired	53,400	42,422
Operating lease right-of-use asset acquired, net	49,291	19,153
Other assets acquired, net	1,693	848
Operating lease liability acquired - current	(5,860)	(3,020)
Other current liabilities acquired	(1,594)	(1,771)
Operating lease liability acquired - noncurrent	(43,431)	(16,133)
Goodwill	79,147	60,446
Total net assets acquired	155,008	113,256
Maximum potential contingent consideration	$ 77,075	$ 41,720