CONSOLIDATED STATEMENT OF EQUITY - USD ($) $ in Thousands	Total	Series A preferred shares	Total Stockholders' Equity	Total Stockholders' Equity Series A preferred shares	Preferred Stock	Common Stock	Treasury Stock	Paid-in Capital	Paid-in Capital Series A preferred shares	Retained Earnings	Noncontrolling Interest
Balance at beginning at Dec. 31, 2017	$ 164,883		$ 111,074		$ 4,001	$ 159	$ (6,395)	$ 107,342		$ 5,967	$ 53,809
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	182,692		173,699							173,699	8,993
Conversion of Series A preferred stock into common stock	0				(400)	(5)		(395)
Series D preferred dividend	(8,347)		(8,347)					(8,347)
Redemption of Series D preferred stock	(10,000)		(10,000)					(10,000)
Acquisition of Series A preferred stock by consolidated subsidiary	(7,200)		(7,200)					(7,200)
Series A preferred stock cash dividend ($1.00 per share)	(901)		(901)					(901)
Balance at end at Dec. 31, 2018	321,127		258,325		3,601	164	(6,395)	81,289		179,666	62,802
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(21,743)		(15,958)							(15,958)	(5,785)
Series A preferred stock cash dividend ($1.00 per share)	(1)		(1)					(1)
Distribution to equity partner	(2,867)		(2,867)					(2,867)
Balance at end at Dec. 31, 2019	296,516		239,499		3,601	164	(6,395)	78,421		163,708	57,017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	11,267		9,030							9,030	2,237
Issuance of shares	3,747	$ 18,876	3,747	$ 18,876				3,747	$ 18,876
Issuance of Series A preferred shares	0				(1,800)	(2)	6,393	(4,591)
Adjustment of noncontrolling interest	0		(34,361)					(34,361)			34,361
Balance at end at Dec. 31, 2020	$ 330,406		$ 236,791		$ 1,801	$ 162	$ (2)	$ 62,092		$ 172,738	$ 93,615