CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative-effect adjustment from adoption of new accounting pronouncement	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Cumulative-effect adjustment from adoption of new accounting pronouncement	Accumulated Other Comprehensive Loss	Treasury Stock	Retained Earnings	Retained Earnings Cumulative-effect adjustment from adoption of new accounting pronouncement
Beginning balance (in shares) at Dec. 31, 2021			160,512,111
Beginning balance at Dec. 31, 2021	$ 4,530,014	$ (235,427)	$ 1,605	$ 3,340,822	$ (375,414)	$ (69,105)	$ 0	$ 1,256,692	$ 139,987
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of stock options and vesting of restricted and deferred stock units, net of shares withheld for employee taxes (in shares)			1,181,381
Issuance of common stock upon the exercise of stock options and vesting of restricted and deferred stock units, net of shares withheld for employee taxes	(64,528)		$ 12	(64,540)
Issuance of common stock under employee stock purchase plan (in shares)			335,644
Issuance of common stock under employee stock purchase plan	29,308		$ 3	29,305
Stock-based compensation	124,027			124,027
Repurchases of common stock (in shares)			(2,559,308)
Repurchases of common stock	(267,642)						(267,642)
Net income	271,216							271,216
Foreign currency translation adjustments	(47,242)					(47,242)
Change in unrealized gain (loss) on available-for-sale investments, net of tax	(26,732)					(26,732)
Ending balance (in shares) at Jun. 30, 2022			159,469,828
Ending balance at Jun. 30, 2022	4,312,994		$ 1,620	3,054,200		(143,079)	(267,642)	1,667,895
Beginning balance (in shares) at Mar. 31, 2022			160,535,769
Beginning balance at Mar. 31, 2022	4,314,735		$ 1,615	2,974,529		(88,611)	(102,853)	1,530,055
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of stock options and vesting of restricted and deferred stock units, net of shares withheld for employee taxes (in shares)			233,231
Issuance of common stock upon the exercise of stock options and vesting of restricted and deferred stock units, net of shares withheld for employee taxes	(9,889)		$ 2	(9,891)
Issuance of common stock under employee stock purchase plan (in shares)			335,644
Issuance of common stock under employee stock purchase plan	29,308		$ 3	29,305
Stock-based compensation	60,257			60,257
Repurchases of common stock (in shares)			(1,634,816)
Repurchases of common stock	(164,789)						(164,789)
Net income	137,840							137,840
Foreign currency translation adjustments	(49,278)					(49,278)
Change in unrealized gain (loss) on available-for-sale investments, net of tax	(5,190)					(5,190)
Ending balance (in shares) at Jun. 30, 2022			159,469,828
Ending balance at Jun. 30, 2022	$ 4,312,994		$ 1,620	3,054,200		(143,079)	(267,642)	1,667,895
Beginning balance (in shares) at Dec. 31, 2022	156,494,816		156,494,816
Beginning balance at Dec. 31, 2022	$ 4,360,187		$ 1,565	2,578,603		(140,332)	0	1,920,351
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of stock options and vesting of restricted and deferred stock units, net of shares withheld for employee taxes (in shares)			1,088,017
Issuance of common stock upon the exercise of stock options and vesting of restricted and deferred stock units, net of shares withheld for employee taxes	(41,242)		$ 11	(41,253)
Issuance of common stock under employee stock purchase plan (in shares)			399,395
Issuance of common stock under employee stock purchase plan	31,269		$ 4	31,265
Stock-based compensation	183,066			183,066
Repurchases of common stock (in shares)			(6,191,367)
Repurchases of common stock	(490,403)						(490,403)
Net income	225,922							225,922
Foreign currency translation adjustments	10,646					10,646
Change in unrealized gain (loss) on available-for-sale investments, net of tax	$ 9,722					9,722
Ending balance (in shares) at Jun. 30, 2023	151,790,861		151,790,861
Ending balance at Jun. 30, 2023	$ 4,289,167		$ 1,580	2,751,681		(119,964)	(490,403)	2,146,273
Beginning balance (in shares) at Mar. 31, 2023			152,743,828
Beginning balance at Mar. 31, 2023	4,171,341		$ 1,573	2,625,244		(121,161)	(351,772)	2,017,457
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon the exercise of stock options and vesting of restricted and deferred stock units, net of shares withheld for employee taxes (in shares)			283,464
Issuance of common stock upon the exercise of stock options and vesting of restricted and deferred stock units, net of shares withheld for employee taxes	(9,906)		$ 3	(9,909)
Issuance of common stock under employee stock purchase plan (in shares)			399,395
Issuance of common stock under employee stock purchase plan	31,269		$ 4	31,265
Stock-based compensation	105,081			105,081
Repurchases of common stock (in shares)			(1,635,826)
Repurchases of common stock	(138,631)						(138,631)
Net income	128,816							128,816
Foreign currency translation adjustments	(1,076)					(1,076)
Change in unrealized gain (loss) on available-for-sale investments, net of tax	$ 2,273					2,273
Ending balance (in shares) at Jun. 30, 2023	151,790,861		151,790,861
Ending balance at Jun. 30, 2023	$ 4,289,167		$ 1,580	$ 2,751,681		$ (119,964)	$ (490,403)	$ 2,146,273