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	Common Stock	Common Stock Total Stockholders’ Equity	Common Stock Common Stock	Common Stock Additional Paid-in Capital	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
Issuance of Stock (in shares)																			5,980
Issuance of Stock																	$ 145	$ 145	$ 150	$ (5)
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)
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	$ 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, 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]
Reclassification of Series A Preferred Stock to permanent equity	16,687
Net (loss) income	(5,297)
Ending balance (in shares) at Jun. 30, 2020			14,827,410	8,954,508										3,560,448					6,900
Ending balance at Jun. 30, 2020	284,393	283,927	$ 15	$ 241,667	795,795	(753,550)	466							$ 88,660					$ 173
Beginning balance (in shares) at Mar. 31, 2020			14,602,149	8,532,056										3,138,916					5,980
Beginning balance at Mar. 31, 2020	279,539	279,030	$ 15	$ 231,144	794,269	(746,398)	509							$ 78,160					$ 150
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to noncontrolling interests	(45)						(45)
Stock-based compensation expense (in shares)			21,912
Stock-based compensation expense	56	56			56
Issuance of Stock (in shares)										203,349									920
Issuance of Stock								$ 2,359	$ 2,359		$ 2,359						22	22	$ 23	(1)
Common dividends	(1,112)	(1,112)				(1,112)
Dividends to holders of Preferred Stock												(1,886)	(1,886)			(1,886)	(3)	(3)			(3)
Reclassification of Series A Preferred Stock to permanent equity (in shares)														427,064
Reclassification of Series A Preferred Stock to permanent equity												9,739	9,739	$ 10,638	(899)
Redeemable Preferred Stock deemed dividends	(52)	(52)				(52)
Redemption of Series A Preferred Stock (in shares)														(5,532)
Redemption of Series A Preferred Stock												(183)	(183)	$ (138)	11	(56)
Net (loss) income	(4,041)	(4,043)				(4,043)	2
Ending balance (in shares) at Jun. 30, 2020			14,827,410	8,954,508										3,560,448					6,900
Ending balance at Jun. 30, 2020	284,393	283,927	$ 15	$ 241,667	795,795	(753,550)	466							$ 88,660					$ 173
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
Issuance of Stock (in shares)																			4,045
Issuance of Stock																	96	96	$ 99	(3)
Common dividends	(1,112)	(1,112)				(1,112)
Dividends to holders of Preferred Stock												(2,350)	(2,350)			(2,350)	(9)	(9)			(9)
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	$ 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
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]
Reclassification of Series A Preferred Stock to permanent equity	20,724
Net (loss) income	(3,144)
Ending balance (in shares) at Jun. 30, 2021			23,369,331	10,671,562										5,253,377					31,025
Ending balance at Jun. 30, 2021	364,526	364,189	$ 24	$ 284,193	868,929	(788,957)	337							$ 130,595					$ 764
Beginning balance (in shares) at Mar. 31, 2021			14,827,410	10,125,641										4,715,291					23,190
Beginning balance at Mar. 31, 2021	278,515	278,175	$ 15	$ 270,546	793,344	(785,730)	340							$ 117,140					$ 572
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense (in shares)			20,332
Stock-based compensation expense	50	50			50
Issuance of Stock (in shares)										8,521,589									7,835
Issuance of Stock								$ 76,943	$ 76,943	$ 9	$ 76,934						185	185	$ 192	$ (7)
Common dividends	(1,114)	(1,114)				(1,114)
Dividends to holders of Preferred Stock												(2,511)	(2,511)			(2,511)	$ (13)	$ (13)			$ (13)
Reclassification of Series A Preferred Stock to permanent equity (in shares)														556,587
Reclassification of Series A Preferred Stock to permanent equity												12,481	12,481	$ 13,915	(1,434)
Redeemable Preferred Stock deemed dividends	(106)	(106)				(106)
Redemption of Series A Preferred Stock (in shares)														(18,501)
Redemption of Series A Preferred Stock												$ (431)	$ (431)	$ (460)	$ 42	$ (13)
Net (loss) income	527	530				530	(3)
Ending balance (in shares) at Jun. 30, 2021			23,369,331	10,671,562										5,253,377					31,025
Ending balance at Jun. 30, 2021	$ 364,526	$ 364,189	$ 24	$ 284,193	$ 868,929	$ (788,957)	$ 337							$ 130,595					$ 764