CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (24,506)	$ (7,748)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	4,896	2,816
Stock-based compensation	25,398	16,952
Other	1,323	313
Changes in operating assets and liabilities:
Accounts receivable	40,341	32,455
Prepaid expenses and other assets	8,463	5,427
Accounts payable, accrued expenses and accrued compensation	(18,745)	(6,003)
Deferred revenue	(3,543)	(5,648)
Other current and noncurrent liabilities	(765)	61
Net cash provided by operating activities	32,862	38,625
Cash flows from investing activities:
Purchases of property and equipment	(4,811)	(1,061)
Purchases of short-term investments	(60,850)	(29,361)
Sales and maturities of short-term investments	55,135	31,000
Business combination, net of cash acquired	(22,960)	0
Net cash (used in) provided by investing activities	(33,486)	578
Cash flows from financing activities:
Payments on term loan	(938)	0
Proceeds from stock issued in connection with the employee stock purchase plan	8,882	8,046
Proceeds from the exercise of stock options	2,587	4,015
Other financing activities	(3)	(3)
Net cash provided by financing activities	10,528	12,058
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(449)	(1,068)
Net increase in cash and cash equivalents and restricted cash	9,455	50,193
Cash and cash equivalents and restricted cash at beginning of period	278,271	178,463
Cash and cash equivalents and restricted cash at end of period	287,726	228,656
Supplemental disclosure of cash flow information:
Cash paid for interest	4,051	71
Cash paid for income taxes, net of refunds	4,320	3,470
Supplemental cash flow information related to leases:
Cash payments for operating leases	$ 750	$ 1,518