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	79,566	0	79,566
Other comprehensive income (loss)	0	0	(5,578)	(5,578)
Dividends and dividend equivalents declared	$ 0	(36,601)	0	(36,601)
Common stock issued under the employee equity incentive plan (in shares)	362
Common stock issued under the employee equity incentive plan	$ 2,318	0	0	2,318
Common stock issued under the employee stock purchase plan (in shares)	7
Common stock issued under the employee stock purchase plan	$ 2,786	0	0	2,786
Stock-based compensation expense	$ 39,636	0	0	39,636
Balance (in shares) at Mar. 31, 2022	46,625
Balance at Mar. 31, 2022	$ 847,966	467,844	10,302	$ 1,326,112
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	109,802	0	109,802
Other comprehensive income (loss)	0	0	5,132	5,132
Dividends and dividend equivalents declared	$ 0	(49,130)	0	(49,130)
Common stock issued under the employee equity incentive plan (in shares)	295
Common stock issued under the employee equity incentive plan	$ 1,110	0	0	1,110
Common stock issued under the employee stock purchase plan (in shares)	9
Common stock issued under the employee stock purchase plan	$ 3,737	0	0	3,737
Stock-based compensation expense	$ 37,008	0	0	$ 37,008
Balance (in shares) at Mar. 31, 2023	47,411			47,411
Balance at Mar. 31, 2023	$ 1,017,131	$ 777,075	$ (17,945)	$ 1,776,261