CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Total
BALANCE at Dec. 31, 2023	$ 411	$ (209,807)	$ 339,562	$ 1,147,663	$ 1,277,829
BALANCE (in shares) at Dec. 31, 2023	41,123,365
BALANCE (in shares) at Dec. 31, 2023		(5,438,625)
Increase (Decrease) in Stockholders' Equity
Net income				96,319	96,319
Issuance of Stock:
Issuance of shares for options exercised		$ 53	(26)		27
Issuance of shares for options exercised (in shares)		1,369
Issuance of restricted stock & performance stock		$ 657	4,696		5,353
Issuance of restricted stock & performance stock (in shares)		17,018
Shares received in lieu of tax withholding on vested stock		$ (2,126)			(2,126)
Shares received in lieu of tax withholding on vested stock (in shares)		(6,763)
Stock-based compensation			4,350		4,350
Dividends				(8,921)	(8,921)
Share repurchase		$ (295)			(295)
Share repurchase (in shares)		(1,500)
BALANCE at Mar. 31, 2024	$ 411	$ (211,518)	348,582	1,235,061	1,372,536
BALANCE (in shares) at Mar. 31, 2024	41,123,365
BALANCE (in shares) at Mar. 31, 2024		(5,428,501)
BALANCE at Dec. 31, 2023	$ 411	$ (209,807)	339,562	1,147,663	1,277,829
BALANCE (in shares) at Dec. 31, 2023	41,123,365
BALANCE (in shares) at Dec. 31, 2023		(5,438,625)
Increase (Decrease) in Stockholders' Equity
Net income					230,328
BALANCE at Jun. 30, 2024	$ 411	$ (225,573)	349,099	1,358,357	1,482,294
BALANCE (in shares) at Jun. 30, 2024	41,123,365
BALANCE (in shares) at Jun. 30, 2024		(5,431,971)
BALANCE at Mar. 31, 2024	$ 411	$ (211,518)	348,582	1,235,061	1,372,536
BALANCE (in shares) at Mar. 31, 2024	41,123,365
BALANCE (in shares) at Mar. 31, 2024		(5,428,501)
Increase (Decrease) in Stockholders' Equity
Net income				134,009	134,009
Issuance of Stock:
Issuance of restricted stock & performance stock		$ 1,851	(1,851)
Issuance of restricted stock & performance stock (in shares)		47,344
Shares received in lieu of tax withholding on vested stock		$ (5,062)			(5,062)
Shares received in lieu of tax withholding on vested stock (in shares)		(15,817)
Stock-based compensation			2,368		2,368
Dividends				(10,713)	(10,713)
Share repurchase		$ (10,844)			(10,844)
Share repurchase (in shares)		(34,997)
BALANCE at Jun. 30, 2024	$ 411	$ (225,573)	349,099	1,358,357	1,482,294
BALANCE (in shares) at Jun. 30, 2024	41,123,365
BALANCE (in shares) at Jun. 30, 2024		(5,431,971)
BALANCE at Dec. 31, 2024	$ 411	$ (273,799)	350,734	1,627,330	$ 1,704,676
BALANCE (in shares) at Dec. 31, 2024	41,123,365				41,123,365
BALANCE (in shares) at Dec. 31, 2024		(5,562,453)			5,562,453
Increase (Decrease) in Stockholders' Equity
Net income				169,289	$ 169,289
Issuance of Stock:
Issuance of restricted stock & performance stock		$ 1,156	5,445		6,601
Issuance of restricted stock & performance stock (in shares)		18,448
Shares received in lieu of tax withholding on vested stock		$ (2,622)			(2,622)
Shares received in lieu of tax withholding on vested stock (in shares)		(7,330)
Stock-based compensation			5,474		5,474
Dividends				(14,162)	(14,162)
Share repurchase		$ (92,243)			(92,243)
Share repurchase (in shares)		(264,054)
BALANCE at Mar. 31, 2025	$ 411	$ (367,508)	361,653	1,782,457	1,777,013
BALANCE (in shares) at Mar. 31, 2025	41,123,365
BALANCE (in shares) at Mar. 31, 2025		(5,815,389)
BALANCE at Dec. 31, 2024	$ 411	$ (273,799)	350,734	1,627,330	$ 1,704,676
BALANCE (in shares) at Dec. 31, 2024	41,123,365				41,123,365
BALANCE (in shares) at Dec. 31, 2024		(5,562,453)			5,562,453
Increase (Decrease) in Stockholders' Equity
Net income					$ 400,137
BALANCE at Jun. 30, 2025	$ 411	$ (388,298)	361,662	1,997,434	$ 1,971,209
BALANCE (in shares) at Jun. 30, 2025	41,123,365				41,123,365
BALANCE (in shares) at Jun. 30, 2025		(5,841,913)			5,841,913
BALANCE at Mar. 31, 2025	$ 411	$ (367,508)	361,653	1,782,457	$ 1,777,013
BALANCE (in shares) at Mar. 31, 2025	41,123,365
BALANCE (in shares) at Mar. 31, 2025		(5,815,389)
Increase (Decrease) in Stockholders' Equity
Net income				230,848	230,848
Issuance of Stock:
Issuance of shares for options exercised		$ 830	(377)		453
Issuance of shares for options exercised (in shares)		12,500
Issuance of restricted stock & performance stock		$ 2,337	(2,337)
Issuance of restricted stock & performance stock (in shares)		35,609
Shares received in lieu of tax withholding on vested stock		$ (3,977)			(3,977)
Shares received in lieu of tax withholding on vested stock (in shares)		(12,255)
Stock-based compensation			2,723		2,723
Dividends				(15,871)	(15,871)
Share repurchase		$ (19,980)			(19,980)
Share repurchase (in shares)		(62,378)
BALANCE at Jun. 30, 2025	$ 411	$ (388,298)	$ 361,662	$ 1,997,434	$ 1,971,209
BALANCE (in shares) at Jun. 30, 2025	41,123,365				41,123,365
BALANCE (in shares) at Jun. 30, 2025		(5,841,913)			5,841,913