Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities
Net loss	$ (32,828)	$ (25,254)	$ (293,623)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	54,177	34,539	18,430
Amortization of debt issuance costs	3,413	3,445	3,390
Non-cash operating lease expense	3,349	3,102	4,478
Stock-based compensation expense	120,234	160,462	397,285
Change in fair value of contingent consideration	18,057	0	2,068
Deferred income taxes	(497)	12,851	(10,910)
Gain on sale of business	(11,404)	0	0
Loss on operating lease assets	12,569	1,430	961
Charitable stock donation	0	0	41,721
Changes in operating assets and liabilities, net of effects of business acquisitions
Accounts receivable	1,375	(43,949)	(16,139)
Prepaid expenses and other assets	(13,644)	17,060	(40,935)
Accounts payable	(874)	4,207	2,154
Accrued expenses and other current liabilities	(5,268)	14,001	15,010
Operating lease liabilities	(4,004)	(2,404)	4,576
Other liabilities	2,125	(711)	2,875
Net cash provided by operating activities	146,780	178,779	131,341
Cash flows from investing activities
Purchase of property and equipment	(3,967)	(4,571)	(20,553)
Acquisitions, net of cash acquired	(156,853)	(140,268)	(55,793)
Capitalized software	(51,247)	(29,886)	(15,271)
Investment in minority equity interest	(15,007)	(4,008)	0
Proceeds from sale of business	16,576	0	0
Net cash used in investing activities	(210,498)	(178,733)	(91,617)
Cash flows from financing activities
Proceeds from issuance of common stock in initial public offering, net of underwriting discounts and commissions	0	0	891,793
Proceeds from private placement with a related party	0	0	100,000
Proceeds from long-term debt	0	0	28,000
Payments on long-term debt	(7,029)	(7,029)	(35,029)
Payment of debt issuance costs and prepayment penalty	0	0	(1,306)
Payment for contingent consideration	0	(832)	0
Repurchases of Class A common stock	(101,721)	0	0
Payments of initial public offering issuance costs	0	0	(4,937)
Proceeds from exercise of stock options	9,159	35,021	5,343
Proceeds from early exercise of stock options	0	0	667
Employee taxes paid related to net share settlement of equity awards	(20,635)	(57,688)	(78,714)
Net cash (used in) provided by financing activities	(120,226)	(30,528)	905,817
Net change in cash, cash equivalents and restricted cash	(183,944)	(30,482)	945,541
Cash, cash equivalents and restricted cash
Beginning of period	941,109	971,591	26,050
End of period	757,165	941,109	971,591
Supplemental disclosure of cash flow information
Income tax paid (refunds received), net	4,356	18,105	29,228
Interest paid	30,702	20,198	24,517
Non cash investing and financing activities
Right-of-use assets obtained in exchange for new operating lease liabilities	22,491	2,910	234
Stock-based compensation included in capitalized software	8,969	7,709	2,437
Capitalized Software Included in Accounts Payable and Accrued Expenses and Other Current Liabilities	4,176	1,086	1,273
Conversion of preferred stock to common stock in connection with initial public offering	0	0	737,009
Reconciliation of cash, cash equivalents and restricted cash to the consolidated balance sheets
Cash and cash equivalents	757,165	941,109	968,691
Restricted cash	0	0	2,900
Total cash, cash equivalents and restricted cash	$ 757,165	$ 941,109	$ 971,591