CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 9,738	$ (13,068)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	7,394	4,402
Amortization of discounts or premiums on marketable securities	3,959	4,259
Amortization of issuance costs	840	835
Amortization of deferred contract costs	6,022	3,779
Stock-based compensation, net of amounts capitalized	66,884	28,861
Non-cash lease expense	4,411	4,012
Allowance for credit losses on accounts receivable	798	25
Loss on disposal of property and equipment	823	3
Changes in operating assets and liabilities:
Accounts receivable, net	(7,319)	9,223
Deferred contract costs	(8,166)	(6,711)
Prepaid expenses and other current assets	(8,391)	(5,998)
Other assets	(805)	572
Accounts payable	(7,624)	(9,226)
Accrued expenses and other liabilities	(2,911)	9,682
Deferred revenue	81,735	21,000
Net cash provided by operating activities	147,388	51,650
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities	(329,706)	(150,331)
Maturities of marketable securities	199,703	253,234
Proceeds from sale of marketable securities	2,007	6,497
Purchases of property and equipment	(9,514)	(998)
Capitalized software development costs	(7,973)	(6,183)
Cash paid for acquisition of businesses; net of cash acquired	(4,871)	(11,509)
Net cash (used in) provided by investing activities	(150,354)	90,710
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	4,245	3,275
Employee payroll taxes paid related to net share settlement under the employee stock purchase plan	0	(245)
Repayments of convertible senior notes	(3)	0
Net cash provided by financing activities	4,242	3,030
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(629)	(782)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	647	144,608
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—Beginning of period	274,463	228,711
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—End of period	275,110	373,319
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for income taxes	339	327
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Accrued property and equipment purchases	2,994	213
Stock-based compensation included in capitalized software development costs	3,506	2,153
Vesting of early exercised options	33	293
Issuance of restricted shares of common stock for the acquisition of businesses	0	20,172
Acquisition holdback	0	1,195
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH WITHIN THE CONDENSED CONSOLIDATED BALANCE SHEETS TO THE AMOUNTS SHOWN IN THE STATEMENTS OF CASH FLOWS ABOVE:
Cash and cash equivalents	271,686	369,706
Restricted cash	3,424	3,613
Total cash, cash equivalents and restricted cash	$ 275,110	$ 373,319