Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated Other Comprehensive Loss	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Dec. 31, 2020			162,709,720
Beginning Balance at Dec. 31, 2020	$ 4,251,296		$ 1,627	$ 3,664,820		$ 0	$ (20,201)	$ 605,050
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)			1,902,742
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	(99,756)		$ 18	(99,774)
Issuance of common stock under employee stock purchase plan (in shares)			648,686
Issuance of common stock under employee stock purchase plan	59,714		$ 7	59,707
Stock-based compensation	238,277			238,277
Repurchases of common stock (in shares)			(4,749,037)
Repurchases of common stock	(522,255)					(522,255)
Treasury stock retirement	0		$ (47)	(522,208)		522,255
Net income	651,642							651,642
Foreign currency translation adjustment	(38,514)						(38,514)
Change in unrealized gain (loss) on investments, net of tax	(10,390)						(10,390)
Ending balance (in shares) at Dec. 31, 2021			160,512,111
Ending Balance at Dec. 31, 2021	4,530,014	$ (235,427)	$ 1,605	3,340,822	$ (375,414)	0	(69,105)	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)			1,697,410
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	(82,277)		$ 17	(82,294)
Issuance of common stock under employee stock purchase plan (in shares)			687,945
Issuance of common stock under employee stock purchase plan	56,570		$ 7	56,563
Stock-based compensation	246,872			246,872
Repurchases of common stock (in shares)			(6,402,650)
Repurchases of common stock	(608,010)					(608,010)
Treasury stock retirement	0		$ (64)	(607,946)		608,010
Net income	523,672							523,672
Foreign currency translation adjustment	(44,665)						(44,665)
Change in unrealized gain (loss) on investments, net of tax	$ (26,562)						(26,562)
Ending balance (in shares) at Dec. 31, 2022	156,494,816		156,494,816
Ending Balance at Dec. 31, 2022	$ 4,360,187		$ 1,565	2,578,603		0	(140,332)	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)			1,743,329
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	(69,604)		$ 17	(69,621)
Issuance of common stock under employee stock purchase plan (in shares)			796,541
Issuance of common stock under employee stock purchase plan	62,365		$ 8	62,357
Stock-based compensation	398,495			398,495
Issuance of warrants related to convertible senior notes	90,195			90,195
Purchase of note hedge related to convertible senior notes, net of deferred taxes of $57,628	(178,927)			(178,927)
Repurchases of common stock (in shares)			(7,801,778)
Repurchases of common stock	(658,187)					(658,187)
Treasury stock retirement	0		$ (78)	(658,109)		658,187
Net income	547,629							547,629
Foreign currency translation adjustment	18,439						18,439
Change in unrealized gain (loss) on investments, net of tax	$ 26,563						26,563
Ending balance (in shares) at Dec. 31, 2023	151,232,908		151,232,908
Ending Balance at Dec. 31, 2023	$ 4,597,155		$ 1,512	$ 2,222,993		$ 0	$ (95,330)	$ 2,467,980