Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income (Loss)
Balance (in shares) at Dec. 31, 2020		40,232,000
Balance at Dec. 31, 2020	$ 639,470	$ 40	$ 519,579	$ 133,870	$ (14,019)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	98,655	0	0	98,655	0
Foreign currency translation	(1,268)	0	0	0	(1,268)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	(3,046)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	9,137	$ 0	0	0	9,137
Repurchases of common stock, net of retirements (shares)		(215,000)
Repurchases of common stock, net of retirements	(71,516)	$ 0	0	(71,516)	0
Share-based compensation	3,837	$ 0	3,837	0	0
Issuance of shares under share-based compensation plans (shares)		69,000
Issuance of stock under share-based compensation plans	2,912	$ 0	2,912	0	0
Declaration of cash dividends	$ (23,299)	$ 0	0	(23,299)	0
Balance (in shares) at Mar. 31, 2021	40,086,256	40,086,000
Balance at Mar. 31, 2021	$ 657,928	$ 40	526,328	137,710	(6,150)
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	179,261	0	0	179,261	0
Foreign currency translation	(214)	0	0	0	(214)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	(3,866)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	11,598	$ 0	0	0	11,598
Repurchases of common stock, net of retirements (shares)		(138,000)
Repurchases of common stock, net of retirements	(62,420)	$ 0	0	(62,420)	0
Share-based compensation	3,657	$ 0	3,657	0	0
Issuance of shares under share-based compensation plans (shares)		55,000
Issuance of stock under share-based compensation plans	3,135	$ 0	3,135	0	0
Declaration of cash dividends	$ (32,132)	$ 0	0	(32,132)	0
Balance (in shares) at Mar. 31, 2022	40,110,126	40,110,000
Balance at Mar. 31, 2022	$ 1,174,278	$ 40	$ 558,755	$ 611,583	$ 3,900