CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss), Net	Retained Earnings
Beginning Balance (in shares) at Dec. 31, 2018		79,778
Beginning Balance at Dec. 31, 2018	$ 1,252,891	$ 8	$ 877,514	$ (2,774)	$ 378,143
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	442,776				442,776
Net change in unrealized gains (losses) from investments	299			299
Net change in foreign currency translation adjustment	1,787			1,787
Issuance of common stock relating to employee equity compensation plans (in shares)		542
Issuance of common stock relating to employee equity compensation plans	17,907		17,907
Tax withholdings related to net share settlements of equity awards	(57,676)		(57,676)
Common stock repurchased and retired (shares)		(1,887)
Common stock repurchased and retired	(399,999)		(18,992)		(381,007)
Stock-based compensation	88,184		88,184
Ending Balance (in shares) at Dec. 31, 2019		78,433
Ending Balance at Dec. 31, 2019	1,346,169	$ 8	906,937	(688)	439,912
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,775,888				1,775,888
Net change in unrealized gains (losses) from investments	(194)			(194)
Net change in foreign currency translation adjustment	44,383			44,383
Issuance of common stock relating to employee equity compensation plans (in shares)		427
Issuance of common stock relating to employee equity compensation plans	20,314		20,314
Tax withholdings related to net share settlements of equity awards	(51,122)		(51,122)
Stock-based compensation	98,427		98,427
Ending Balance (in shares) at Dec. 31, 2020		78,860
Ending Balance at Dec. 31, 2020	3,233,865	$ 8	974,556	43,501	2,215,800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	772,020				772,020
Net change in unrealized gains (losses) from investments	(495)			(495)
Net change in foreign currency translation adjustment	(38,680)			(38,680)
Issuance of common stock relating to employee equity compensation plans (in shares)		442
Issuance of common stock relating to employee equity compensation plans	25,623		25,623
Tax withholdings related to net share settlements of equity awards	(108,917)		(108,917)
Common stock repurchased and retired (shares)		(592)
Common stock repurchased and retired	(375,038)		(6,592)		(368,446)
Stock-based compensation	114,336		114,336
Ending Balance (in shares) at Dec. 31, 2021		78,710
Ending Balance at Dec. 31, 2021	$ 3,622,714	$ 8	$ 999,006	$ 4,326	$ 2,619,374