Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income	$ 12,293	$ 1,668
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,373	5,361
Amortization of debt issuance costs	856	863
Non-cash operating lease expense	727	872
Stock-based compensation expense	30,149	46,526
Deferred income taxes	(394)	(227)
Changes in operating assets and liabilities, net of effects of business acquisitions
Accounts receivable	(5,198)	(5,670)
Prepaid expenses and other assets	3,616	(9,844)
Accounts payable	(4,442)	4,943
Accrued expenses and other current liabilities	(17,197)	(67)
Operating lease liabilities	(1,228)	631
Other liabilities	(435)	429
Net cash provided by operating activities	30,120	45,485
Cash flows from investing activities
Purchase of property and equipment	(1,736)	(2,715)
Acquisition, net of cash acquired	(6,976)	0
Capitalized software	(10,682)	(6,980)
Investment in minority equity interest	(15,007)	0
Net cash used in investing activities	(34,401)	(9,695)
Cash flows from financing activities
Payments on long-term debt	(1,758)	(1,757)
Repurchases of Class A common stock	(83,765)	0
Proceeds from exercise of stock options	3,683	2,372
Employee taxes paid related to net share settlement of equity awards	(9,561)	(14,633)
Net cash used in financing activities	(91,401)	(14,018)
Net change in cash, cash equivalents and restricted cash	(95,682)	21,772
Cash, cash equivalents and restricted cash
Beginning of period	941,109	971,591
End of period	845,427	993,363
Non cash investing and financing activities
Stock-based compensation included in capitalized software	2,012	1,728
Reconciliation of cash, cash equivalents and restricted cash to the condensed consolidated balance sheets
Cash and cash equivalents	845,427	990,463
Restricted cash	0	2,900
Total cash, cash equivalents and restricted cash	$ 845,427	$ 993,363