Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock Including Additional Paid in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2021	46,256
Balance at Dec. 31, 2021	$ 803,226	$ 424,879	$ 15,880	$ 1,243,985
Net income	0	318,582	0	318,582
Other comprehensive loss	0	0	(57,804)	(57,804)
Dividends and dividend equivalents declared	$ 0	(109,821)	0	(109,821)
Common stock issued under the employee equity incentive plan (in shares)	671
Common stock issued under the employee equity incentive plan	$ 4,345	0	0	4,345
Common stock issued under the employee stock purchase plan (in shares)	14
Common stock issued under the employee stock purchase plan	$ 5,877	0	0	5,877
Stock-based compensation expense	$ 125,545	0	0	125,545
Balance (in shares) at Sep. 30, 2022	46,941
Balance at Sep. 30, 2022	$ 938,993	633,640	(41,924)	1,530,709
Balance (in shares) at Jun. 30, 2022	46,787
Balance at Jun. 30, 2022	$ 891,888	545,920	(14,686)	1,423,122
Net income	0	124,337	0	124,337
Other comprehensive loss	0	0	(27,238)	(27,238)
Dividends and dividend equivalents declared	$ 0	(36,617)	0	(36,617)
Common stock issued under the employee equity incentive plan (in shares)	147
Common stock issued under the employee equity incentive plan	$ 1,014	0	0	1,014
Common stock issued under the employee stock purchase plan (in shares)	7
Common stock issued under the employee stock purchase plan	$ 3,091	0	0	3,091
Stock-based compensation expense	$ 43,000	0	0	43,000
Balance (in shares) at Sep. 30, 2022	46,941
Balance at Sep. 30, 2022	$ 938,993	633,640	(41,924)	$ 1,530,709
Balance (in shares) at Dec. 31, 2022	47,107			47,107
Balance at Dec. 31, 2022	$ 975,276	716,403	(23,077)	$ 1,668,602
Net income	0	330,469	0	330,469
Other comprehensive loss	0	0	(24,026)	(24,026)
Dividends and dividend equivalents declared	$ 0	(147,474)	0	(147,474)
Common stock issued under the employee equity incentive plan (in shares)	786
Common stock issued under the employee equity incentive plan	$ 1,118	0	0	1,118
Common stock issued under the employee stock purchase plan (in shares)	18
Common stock issued under the employee stock purchase plan	$ 7,568	0	0	7,568
Stock-based compensation expense	$ 108,607	0	0	$ 108,607
Balance (in shares) at Sep. 30, 2023	47,911			47,911
Balance at Sep. 30, 2023	$ 1,092,569	899,398	(47,103)	$ 1,944,864
Balance (in shares) at Jun. 30, 2023	47,611
Balance at Jun. 30, 2023	$ 1,055,130	827,356	(43,397)	1,839,089
Net income	0	121,163	0	121,163
Other comprehensive loss	0	0	(3,706)	(3,706)
Dividends and dividend equivalents declared	$ 0	(49,121)	0	(49,121)
Common stock issued under the employee equity incentive plan (in shares)	291
Common stock issued under the employee equity incentive plan	$ 4	0	0	4
Common stock issued under the employee stock purchase plan (in shares)	9
Common stock issued under the employee stock purchase plan	$ 3,831	0	0	3,831
Stock-based compensation expense	$ 33,604	0	0	$ 33,604
Balance (in shares) at Sep. 30, 2023	47,911			47,911
Balance at Sep. 30, 2023	$ 1,092,569	$ 899,398	$ (47,103)	$ 1,944,864