Consolidated Statements of Stockholders' Equity - USD ($) $ 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, 2020	45,267,000
Balance at Dec. 31, 2020	$ 657,701	$ 298,746	$ 10,140	$ 966,587
Net income	0	242,023	0	242,023
Other comprehensive income	0	0	5,740	5,740
Dividends and dividend equivalents declared	$ 0	(115,890)	0	(115,890)
Common stock issued under the employee equity incentive plan (in shares)	972,000
Common stock issued under the employee equity incentive plan	$ 17,322	0	0	17,322
Common stock issued under the employee stock purchase plan (in shares)	17,000
Common stock issued under the employee stock purchase plan	$ 4,670	0	0	4,670
Stock-based compensation expense	$ 123,533	0	0	123,533
Balance (in shares) at Dec. 31, 2021	46,256,000
Balance at Dec. 31, 2021	$ 803,226	424,879	15,880	1,243,985
Net income	0	437,672	0	437,672
Other comprehensive income	0	0	(38,957)	(38,957)
Dividends and dividend equivalents declared	$ 0	(146,148)	0	(146,148)
Common stock issued under the employee equity incentive plan (in shares)	837,000
Common stock issued under the employee equity incentive plan	$ 5,358	0	0	5,358
Common stock issued under the employee stock purchase plan (in shares)	14,000
Common stock issued under the employee stock purchase plan	$ 5,877	0	0	5,877
Stock-based compensation expense	$ 160,815	0	0	$ 160,815
Balance (in shares) at Dec. 31, 2022	47,107,000			47,107,000
Balance at Dec. 31, 2022	$ 975,276	716,403	(23,077)	$ 1,668,602
Net income	0	427,374	0	427,374
Other comprehensive income	0	0	(3,985)	(3,985)
Dividends and dividend equivalents declared	$ 0	(196,713)	0	(196,713)
Common stock issued under the employee equity incentive plan (in shares)	911,000
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)	17,000
Common stock issued under the employee stock purchase plan	$ 7,568	0	0	7,568
Stock-based compensation expense	$ 149,716	0	0	$ 149,716
Repurchase of common stock (in shares)	(7,000)			(7,000)
Repurchase of common stock	$ (3,741)	0	0	$ (3,741)
Balance (in shares) at Dec. 31, 2023	48,028,000			48,028,000
Balance at Dec. 31, 2023	$ 1,129,937	$ 947,064	$ (27,062)	$ 2,049,939