Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Total
Beginning balance at Dec. 31, 2021	$ 338	$ 697,845	$ 1,066,325	$ 1,764,508
Beginning balance, shares at Dec. 31, 2021	33,761
Vesting of stock-based compensation awards	$ 5	(5)
Vesting of stock-based compensation awards, shares	480
Withholding of common stock upon vesting of stock-based compensation awards	$ (3)	(12,135)		(12,138)
Withholding of common stock upon vesting of stock-based compensation awards, shares	(190)
Repurchases of common stock	$ (10)	(62,367)		(62,377)
Repurchases of common stock, shares	(1,013)
Stock-based compensation expense		4,064		4,064
Cash dividends declared and dividend equivalents		79	(6,736)	(6,657)
Other		(34)		(34)
Net income			142,496	142,496
Ending balance at Mar. 31, 2022	$ 330	627,447	1,202,085	1,829,862
Ending balance, shares at Mar. 31, 2022	33,038
Beginning balance at Dec. 31, 2022	$ 318	584,803	1,565,094	2,150,215
Beginning balance, shares at Dec. 31, 2022	31,773
Vesting of stock-based compensation awards	$ 4	(4)
Vesting of stock-based compensation awards, shares	412
Withholding of common stock upon vesting of stock-based compensation awards	$ (2)	(9,878)		(9,880)
Withholding of common stock upon vesting of stock-based compensation awards, shares	(159)
Stock-based compensation expense		5,360		5,360
Cash dividends declared and dividend equivalents		208	(7,573)	(7,365)
Net income			33,311	33,311
Ending balance at Mar. 31, 2023	$ 320	$ 580,489	$ 1,590,832	$ 2,171,641
Ending balance, shares at Mar. 31, 2023	32,026