Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Common Stock [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Treasury Stock [Member]	Treasury Stock [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-In Capital [Member]	Additional Paid-In Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Other Comprehensive Loss [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning Balance at Dec. 31, 2020	$ 2,261,539		$ 329		$ (217,889)		$ 873,874		$ (1,904)		$ 1,607,129
Net Income	89,933		0		0		0		0		89,933
Other comprehensive income	204		0		0		0		204		0
Stock-based compensation	4,060		0		0		4,060		0		0
Issuance of warrants	3,228		0				3,228		0		0
Treasury shares withheld for payment of taxes	(7,350)		0		(7,350)		0		0		0
Issuance of shares related to settlement of warrant	31,582		13		0		31,569		0		0
Issuance of shares of restricted stock	0		3		0		(3)		0		0
Ending Balance at Mar. 31, 2021	2,383,196		345		(225,239)		912,728		(1,700)		1,697,062
Beginning Balance at Dec. 31, 2021	2,809,337	$ (24,042)	347	$ 0	(225,461)	$ 0	934,516	$ (92,586)	(511)	$ 0	2,100,446	$ 68,544
Net Income	81,511		0		0		0		0		81,511
Other comprehensive income	78		0		0		0		78		0
Stock-based compensation	2,195		0		0		2,195		0		0
Issuance of warrants	4,304		0		0		4,304		0		0
Prepayment of accelerated share repurchase	(20,034)		0		0		(20,034)		0		0
Purchase of shares of treasury stock	(79,966)		0		(79,966)		0		0		0
Treasury shares withheld for payment of taxes	(12,053)		0		(12,053)		0		0		0
Issuance of shares of restricted stock	0		4		0		(4)		0		0
Ending Balance at Mar. 31, 2022	$ 2,761,330		$ 351		$ (317,480)		$ 828,391		$ (433)		$ 2,250,501