Consolidated Statements of Equity - USD ($) $ in Thousands		Total	Total Stockholders' Equity	Common Stock		Preferred Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Distributions in Excess of Earnings	Noncontrolling Interests	Series A Preferred Stock	Series A Preferred Stock Total Stockholders' Equity	Series A Preferred Stock Preferred Stock	Series A Preferred Stock Distributions in Excess of Earnings	Series L Preferred Stock	Series L Preferred Stock Total Stockholders' Equity	Series L Preferred Stock Preferred Stock	Series L Preferred Stock Additional Paid-in Capital	Series L Preferred Stock Distributions in Excess of Earnings	Series D Preferred Stock	Series D Preferred Stock Total Stockholders' Equity	Series D Preferred Stock Preferred Stock	Series D Preferred Stock Additional Paid-in Capital	Series D Preferred Stock Distributions in Excess of Earnings	Common Stock	Common Stock Total Stockholders' Equity	Common Stock Common Stock	Common Stock Additional Paid-in Capital
Beginning balance (in shares) at Dec. 31, 2017				14,594,979	[1]	8,141,332							60,592				8,080,740
Beginning balance at Dec. 31, 2017		$ 626,705	$ 625,815	$ 44	[1]	$ 230,759	$ 792,631	$ 1,631	$ (399,250)	$ 890			$ 1,508				$ 229,251
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to noncontrolling interests		(74)								(74)
Stock based compensation expense (in shares)	[1]			3,378
Stock-based compensation expense		162	162				162
Common dividends	[1]	(21,895)	(21,895)						(21,895)
Issuance of Series A Preferred Warrants		73	73				73
Dividends to holders of Series Preferred Stock											$ (2,814)	$ (2,814)		$ (2,814)	$ (14,045)	$ (14,045)			$ (14,045)
Reclassification of Series A Preferred Stock to permanent equity (in shares)						1,223,032							1,223,032
Reclassification of Series A Preferred Stock to permanent equity		27,887	27,887			$ 30,403	(2,516)						$ 30,403
Redemption of Series A Preferred Stock (in shares)						(1,820)							(1,820)
Redemption of Series A Preferred Stock		(41)	(41)			$ (45)	4						$ (45)
Other comprehensive (loss) income		175	175					175
Net income (loss)		1,142	1,121						1,121	21
Ending balance (in shares) at Dec. 31, 2018				14,598,357	[1]	9,362,544							1,281,804				8,080,740
Ending balance at Dec. 31, 2018		617,275	616,438	$ 44	[1]	$ 261,117	790,354	1,806	(436,883)	837			$ 31,866				$ 229,251
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contributions to noncontrolling interests		455								455
Distributions to noncontrolling interests		(522)								(522)
Extinguishment of noncontrolling interests		(113)								(113)
Stock based compensation expense (in shares)	[1]			3,880
Stock-based compensation expense		194	194				194
Retirement of fractional shares (in shares)	[1]			(88)
Retirement of fractional shares		(1)	(1)				(1)
Change in par value		0		$ (29)	[1]		29
Special cash dividends ($42.000 per share) (Note 10)		(613,294)	(613,294)						(613,294)
Common dividends	[1]	(13,140)	(13,140)						(13,140)
Issuance of Series A Preferred Warrants		382	382				382
Dividends to holders of Series Preferred Stock											(4,945)	(4,945)		(4,945)	(12,150)	(12,150)			(12,150)
Repurchase of Series L Preferred Stock (in shares)						(2,693,580)											(2,693,580)
Repurchase of Series L Preferred Stock						$ (76,417)									(75,155)	(75,155)	$ (76,417)	$ 7,135	(5,873)
Reclassification of Series A Preferred Stock to permanent equity (in shares)						1,561,746							1,561,746
Reclassification of Series A Preferred Stock to permanent equity		35,649	35,649			$ 38,927	(3,278)						$ 38,927
Redemption of Series A Preferred Stock (in shares)						(6,456)							(6,456)
Redemption of Series A Preferred Stock		(155)	(155)			$ (160)	10		(5)				$ (160)
Other comprehensive (loss) income		(1,806)	(1,806)					(1,806)
Net income (loss)		345,521	345,673						345,673	(152)
Ending balance (in shares) at Dec. 31, 2019				14,602,149		8,224,254							2,837,094				5,387,160					0
Ending balance at Dec. 31, 2019		278,195	277,690	$ 15		$ 223,467	794,825	$ 0	(740,617)	505			$ 70,633				$ 152,834					$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to noncontrolling interests		(51)								(51)
Stock based compensation expense (in shares)				21,912
Stock-based compensation expense		222	222				222
Issuance of Stock (in shares)						19,145																19,145					203,349
Issuance of Stock						$ 473														$ 456	$ 456	$ 473	$ (17)		$ 2,359	$ 2,359		$ 2,359
Common dividends		(4,431)	(4,431)						(4,431)
Issuance of Series A Preferred Warrants		28	28				28
Dividends to holders of Series Preferred Stock											(9,579)	$ (9,579)		$ (9,579)	$ (8,406)	$ (8,406)			$ (8,406)	$ (21)	$ (21)			$ (21)
Reclassification of Series A Preferred Stock to permanent equity (in shares)						1,570,421							1,570,421
Reclassification of Series A Preferred Stock to permanent equity		35,483	35,483			$ 38,837	(3,354)				$ 100,400		$ 38,837
Redeemable Preferred Stock deemed dividends		(377)	(377)						(377)
Redemption of Series A Preferred Stock (in shares)						(29,753)							(29,753)
Redemption of Series A Preferred Stock		(749)	(749)			$ (741)	64		(72)				$ (741)
Other comprehensive (loss) income		0
Net income (loss)		(15,015)	(15,016)						(15,016)	1
Ending balance (in shares) at Dec. 31, 2020				14,827,410		9,784,067							4,377,762				5,387,160					19,145
Ending balance at Dec. 31, 2020		$ 278,114	$ 277,659	$ 15		$ 262,036	$ 794,127		$ (778,519)	$ 455			$ 108,729				$ 152,834					$ 473

[1] All share and per share amounts have been adjusted to give retroactive effect to the one-for-three reverse stock split of our common stock effected on September 3, 2019.