UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net (loss) income	$ (286,296)	$ 37,291	$ (286,675)	$ 30,674
Adjustments to reconcile net (loss) income to cash (used in) provided by operating activities
Stock-based compensation	31,300	30,688	59,527	60,788
Deferred income taxes			169,105	(28,232)
Loss (gain) on capped call transactions	18,945	(26,309)	49,505	(7,192)
Amortization of deferred commissions	10,934	9,706	28,155	21,202
Lease expense			7,832	5,792
Amortization of intangible assets and depreciation			8,175	15,504
Foreign currency transaction (gain) loss	(1,713)	403	(4,589)	5,501
Other non-cash			(3,479)	3,543
Change in operating assets and liabilities, net			(32,625)	(88,170)
Cash (used in) provided by operating activities			(5,069)	19,410
Investing activities
Purchases of investments			(38,489)	(51,601)
Proceeds from maturities and called investments			34,912	68,798
Sales of investments			14,839	2,450
Payments for acquisitions, net of cash acquired			(922)	(4,993)
Investment in property and equipment			(11,863)	(4,161)
Cash (used in) provided by investing activities			(1,523)	10,493
Financing activities
Proceeds from employee stock purchase plan			4,803	5,146
Dividend payments to stockholders			(4,908)	(4,865)
Common stock repurchases			(41,086)	(60,998)
Cash (used in) financing activities			(41,191)	(60,717)
Effect of exchange rate changes on cash and cash equivalents			(2,907)	(1,207)
Net (decrease) in cash and cash equivalents			(50,690)	(32,021)
Cash and cash equivalents, beginning of period			159,965	171,899
Cash and cash equivalents, end of period	$ 109,275	$ 139,878	$ 109,275	$ 139,878