Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Total Stockholders’ Equity	Common Stock	Preferred Stock	Additional Paid-in Capital	Distributions in Excess of Earnings	Non-controlling Interests	Series A Preferred Stock	Series A Preferred Stock Total Stockholders’ Equity	Series A Preferred Stock Preferred Stock	Series A Preferred Stock Additional Paid-in Capital	Series A 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
Beginning balance (in shares) at Dec. 31, 2019			14,602,149	8,224,254						2,837,094					0
Beginning balance at Dec. 31, 2019	$ 278,195	$ 277,690	$ 15	$ 223,467	$ 794,825	$ (740,617)	$ 505			$ 70,633					$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	56	56			56
Common dividends	(1,095)	(1,095)				(1,095)
Issuance of Series A Preferred Warrants	28	28			28
Dividends to holders of Preferred Stock								$ (3,252)	$ (3,252)			$ (3,252)	$ (3)	$ (3)			$ (3)
Issuance of Series D Preferred Stock (in shares)															5,980
Issuance of Series D Preferred Stock													145	145	$ 150	$ (5)
Reclassification of Series A Preferred Stock to permanent equity (in shares)										304,274
Reclassification of Series A Preferred Stock to permanent equity	6,948							6,948	6,948	$ 7,588	$ (640)
Redeemable Preferred Stock deemed dividends	(161)	(161)				(161)
Redemption of Series A Preferred Stock (in shares)										(2,452)
Redemption of Series A Preferred Stock								(66)	(66)	$ (61)	5	(10)
Net (loss) income	(1,256)	(1,260)				(1,260)	4
Ending balance (in shares) at Mar. 31, 2020			14,602,149	8,532,056						3,138,916					5,980
Ending balance at Mar. 31, 2020	279,539	279,030	$ 15	$ 231,144	794,269	(746,398)	509			$ 78,160					$ 150
Beginning balance (in shares) at Dec. 31, 2020			14,827,410	9,784,067						4,377,762					19,145
Beginning balance at Dec. 31, 2020	278,114	277,659	$ 15	$ 262,036	794,127	(778,519)	455			$ 108,729					$ 473
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contributions to noncontrolling interests	0
Distributions to noncontrolling interests	(114)						(114)
Stock-based compensation expense	60	60			60
Common dividends	(1,112)	(1,112)				(1,112)
Dividends to holders of Preferred Stock								(2,350)	(2,350)			(2,350)	(9)	(9)			$ (9)
Issuance of Series D Preferred Stock (in shares)															4,045
Issuance of Series D Preferred Stock													$ 96	$ 96	$ 99	$ (3)
Reclassification of Series A Preferred Stock to permanent equity (in shares)										366,991
Reclassification of Series A Preferred Stock to permanent equity	8,243							8,243	8,243	$ 9,144	(901)
Redeemable Preferred Stock deemed dividends	(57)	(57)				(57)
Redemption of Series A Preferred Stock (in shares)										(29,462)
Redemption of Series A Preferred Stock								$ (685)	$ (685)	$ (733)	$ 61	$ (13)
Net (loss) income	(3,671)	(3,670)				(3,670)	(1)
Ending balance (in shares) at Mar. 31, 2021			14,827,410	10,125,641						4,715,291					23,190
Ending balance at Mar. 31, 2021	$ 278,515	$ 278,175	$ 15	$ 270,546	$ 793,344	$ (785,730)	$ 340			$ 117,140					$ 572