CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Series A Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained (Deficit) Earnings
Beginning balance at Dec. 31, 2017	$ 859,310	$ 335,000	$ 33	$ 545,345	$ 0	$ (21,068)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared on Series A Preferred Stock, $0.308/share	(11,301)			(11,301)
Conversion of Series A Preferred Stock into common stock	0	(335,000)	40	334,960
Cash payment to Series A Preferred Stockholders	(60,273)			(60,273)
Issuance of common stock in initial public offering	133,805		10	133,795
Repurchase of common stock	(23,712)		(2)	(23,710)
Shares withheld for payment of taxes on equity awards	(3,699)		1	(3,700)
Stock based compensation	6,789			6,789
Purchase of rights to common stock	(20,265)				(20,265)
Purchase of treasury stock	(3,953)				(3,953)
Dividends declared on common stock	(17,357)			(7,365)		(9,992)
Net (loss) income	147,102					147,102
Ending balance at Dec. 31, 2018	1,006,446	0	82	914,540	(24,218)	116,042
Beginning balance at Dec. 31, 2017	859,310	335,000	33	545,345	0	(21,068)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of treasury stock	(50,000)
Ending balance at Dec. 31, 2019	972,448	0	85	901,830	(49,995)	120,528
Beginning balance at Dec. 31, 2018	1,006,446	0	82	914,540	(24,218)	116,042
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares withheld for payment of taxes on equity awards	(1,268)			(1,268)
Stock based compensation	8,826			8,826
Purchase of rights to common stock	0			(20,265)	20,265
Purchase of treasury stock	(46,042)				(46,042)
Common stock issued to settle unsecured claims	0		3	(3)
Dividends declared on common stock	(39,053)					(39,053)
Net (loss) income	43,539					43,539
Ending balance at Dec. 31, 2019	972,448	0	85	901,830	(49,995)	120,528
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares withheld for payment of taxes on equity awards	(1,039)			(1,039)
Stock based compensation	15,086			15,086
Dividends declared on common stock	(9,564)					(9,564)
Net (loss) income	(262,895)					(262,895)
Ending balance at Dec. 31, 2020	$ 714,036	$ 0	$ 85	$ 915,877	$ (49,995)	$ (151,931)