Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance (in shares) at Dec. 31, 2019		40,074,000
Balance at Dec. 31, 2019	$ 410,180	$ 40	$ 485,239	$ (64,740)	$ (10,359)
Net income	366,738	0	0	366,738	0
Foreign currency translation	5,210	0	0	0	5,210
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	2,957
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(8,870)	$ 0	0	0	(8,870)
Repurchases of common stock, net of retirements (in shares)		(401,000)
Repurchases of common stock, net of retirements	(76,199)	$ 0	0	(76,199)	0
Share-based compensation	14,516	$ 0	14,516	0	0
Issuance of stock under share-based compensation plans (in shares)		559,000
Issuance of stock under share-based compensation plans	19,824	$ 0	19,824	0	0
Declaration of cash dividends	(91,929)	$ 0	0	(91,929)	0
Balance (in shares) at Dec. 31, 2020		40,232,000
Balance at Dec. 31, 2020	639,470	$ 40	519,579	133,870	(14,019)
Net income	650,624	0	0	650,624	0
Foreign currency translation	(4,663)	0	0	0	(4,663)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	(3,733)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	11,198	$ 0	0	0	11,198
Repurchases of common stock, net of retirements (in shares)		(360,000)
Repurchases of common stock, net of retirements	(138,039)	$ 0	0	(138,039)	0
Share-based compensation	15,187	$ 0	15,187	0	0
Issuance of stock under share-based compensation plans (in shares)		321,000
Issuance of stock under share-based compensation plans	17,197	$ 0	17,197	0	0
Declaration of cash dividends	$ (119,581)	$ 0	0	(119,581)	0
Balance (in shares) at Dec. 31, 2021	40,192,901	40,193,000
Balance at Dec. 31, 2021	$ 1,071,393	$ 40	551,963	526,874	(7,484)
Net income	748,462	0	0	748,462	0
Foreign currency translation	(10,028)	0	0	0	(10,028)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	(7,802)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	23,407	$ 0	0	0	23,407
Repurchases of common stock, net of retirements (in shares)		(1,234,000)
Repurchases of common stock, net of retirements	(471,229)	$ 1	0	(471,228)	0
Share-based compensation	14,879	$ 0	14,879	0	0
Issuance of stock under share-based compensation plans (in shares)		110,000
Issuance of stock under share-based compensation plans	8,934	$ 0	8,934	0	0
Declaration of cash dividends	$ (150,624)	$ 0	0	(150,624)	0
Balance (in shares) at Dec. 31, 2022	39,069,419	39,069,000
Balance at Dec. 31, 2022	$ 1,235,194	$ 39	$ 575,776	$ 653,484	$ 5,895