Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2020		128,198,185
Beginning balance at Dec. 31, 2020	$ 26,622	$ 1,282	$ 491,246	$ (428,406)	$ (37,500)
Treasury stock, beginning balance (in shares) at Dec. 31, 2020					1,395,089
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	701		701
Net income	12,862			12,862
Ending balance at Mar. 31, 2021	40,185	$ 1,282	491,947	(415,544)	$ (37,500)
Ending balance (in shares) at Mar. 31, 2021		128,198,185
Treasury stock, ending balance (in shares) at Mar. 31, 2021					1,395,089
Beginning balance (in shares) at Dec. 31, 2020		128,198,185
Beginning balance at Dec. 31, 2020	26,622	$ 1,282	491,246	(428,406)	$ (37,500)
Treasury stock, beginning balance (in shares) at Dec. 31, 2020					1,395,089
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	118,242
Ending balance at Sep. 30, 2021	127,590	$ 1,282	493,972	(310,164)	$ (57,500)
Ending balance (in shares) at Sep. 30, 2021		128,198,185
Treasury stock, ending balance (in shares) at Sep. 30, 2021					2,007,834
Beginning balance (in shares) at Mar. 31, 2021		128,198,185
Beginning balance at Mar. 31, 2021	40,185	$ 1,282	491,947	(415,544)	$ (37,500)
Treasury stock, beginning balance (in shares) at Mar. 31, 2021					1,395,089
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	927		927
Share repurchase (in shares)					(612,745)
Shares repurchased	(20,000)				$ (20,000)
Net income	75,966			75,966
Ending balance at Jun. 30, 2021	97,078	$ 1,282	492,874	(339,578)	$ (57,500)
Ending balance (in shares) at Jun. 30, 2021		128,198,185
Treasury stock, ending balance (in shares) at Jun. 30, 2021					2,007,834
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	1,098		1,098
Net income	29,414			29,414
Ending balance at Sep. 30, 2021	$ 127,590	$ 1,282	493,972	(310,164)	$ (57,500)
Ending balance (in shares) at Sep. 30, 2021		128,198,185
Treasury stock, ending balance (in shares) at Sep. 30, 2021					2,007,834
Beginning balance (in shares) at Dec. 31, 2021	126,212,876	128,198,185
Beginning balance at Dec. 31, 2021	$ 158,982	$ 1,282	496,983	(282,439)	$ (56,844)
Treasury stock, beginning balance (in shares) at Dec. 31, 2021	1,985,309				1,985,309
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	$ 1,281		1,281
Restricted stock units issued, net of shares withheld for taxes	(39)		(207)		$ 168
Restricted stock units issued, net of shares withheld for taxes (in shares)					5,079
Net income	23,154			23,154
Ending balance at Mar. 31, 2022	$ 183,378	$ 1,282	498,057	(259,285)	$ (56,676)
Ending balance (in shares) at Mar. 31, 2022		128,198,185
Treasury stock, ending balance (in shares) at Mar. 31, 2022					1,980,230
Beginning balance (in shares) at Dec. 31, 2021	126,212,876	128,198,185
Beginning balance at Dec. 31, 2021	$ 158,982	$ 1,282	496,983	(282,439)	$ (56,844)
Treasury stock, beginning balance (in shares) at Dec. 31, 2021	1,985,309				1,985,309
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 70,809
Ending balance at Sep. 30, 2022	$ 233,274	$ 1,282	499,843	(211,630)	$ (56,221)
Ending balance (in shares) at Sep. 30, 2022	126,230,762	128,198,185
Treasury stock, ending balance (in shares) at Sep. 30, 2022	1,967,423				1,967,423
Beginning balance (in shares) at Mar. 31, 2022		128,198,185
Beginning balance at Mar. 31, 2022	$ 183,378	$ 1,282	498,057	(259,285)	$ (56,676)
Treasury stock, beginning balance (in shares) at Mar. 31, 2022					1,980,230
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	988		988
Restricted stock units issued, net of shares withheld for taxes	(24)		(300)		$ 276
Restricted stock units issued, net of shares withheld for taxes (in shares)					7,595
Net income	23,126			23,126
Ending balance at Jun. 30, 2022	207,468	$ 1,282	498,745	(236,159)	$ (56,400)
Ending balance (in shares) at Jun. 30, 2022		128,198,185
Treasury stock, ending balance (in shares) at Jun. 30, 2022					1,972,635
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	1,295
Restricted stock units issued, net of shares withheld for taxes	(18)		(197)		$ 179
Restricted stock units issued, net of shares withheld for taxes (in shares)					5,212
Net income	24,529			24,529
Ending balance at Sep. 30, 2022	$ 233,274	$ 1,282	$ 499,843	$ (211,630)	$ (56,221)
Ending balance (in shares) at Sep. 30, 2022	126,230,762	128,198,185
Treasury stock, ending balance (in shares) at Sep. 30, 2022	1,967,423				1,967,423