Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Series D Preferred Stock [Member] Accumulated Deficit [Member]	Series D Preferred Stock [Member] Parent [Member]	Series D Preferred Stock [Member]	Series E Preferred Stock [Member] Accumulated Deficit [Member]	Series E Preferred Stock [Member] Parent [Member]	Series E Preferred Stock [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2016							$ 61,333	$ 8	$ 118,655	$ (112,024)	$ 67,972	$ 2,827	$ 70,799
Balance, shares at Dec. 31, 2016							6,245	763
Stock-based compensation								$ 1	579		580		580
Stock-based compensation, shares								90
Long-term incentive plan												85	85
Cancellation of LTIP units									1,941		1,941	(1,941)
Issuance of common stock								$ 47	45,893		45,940		45,940
Issuance of common stock, shares								4,801
Issuance of common units												435	435
Dividends and distributions declared: Common stock (per share)										(6,795)	(6,795)		(6,795)
Dividends and distributions declared: Preferred stock	$ (650)	$ (650)	$ (650)	$ (339)	$ (339)	$ (339)
Fractional common shares settled in reverse stock split									(1)		(1)		(1)
Conversion of Series D Preferred to common stock and issuance of Series E Preferred							$ (51,283)	$ 60	61,273	(11,090)	(1,040)		(1,040)
Conversion of Series D Preferred to common stock and issuance of Series E Preferred, shares							(5,320)	6,005
Warrant exchange									289		289		289
Net earnings										1,543	1,543	10	1,553
Balance at Sep. 30, 2017							$ 10,050	$ 116	228,629	(129,355)	109,440	1,416	110,856
Balance, shares at Sep. 30, 2017							925	11,659
Balance at Dec. 31, 2017							$ 10,050	$ 118	230,727	(130,489)	110,406	1,408	111,814
Balance, shares at Dec. 31, 2017							925	11,834
Stock-based compensation									722		722		722
Stock-based compensation, shares								22
Issuance of common stock								$ 1	259		260		260
Issuance of common stock, shares								28
Issuance of common units												50	50
Dividends and distributions declared: Common stock (per share)										(6,950)	(6,950)		(6,950)
Dividends and distributions declared: Preferred stock				$ (434)	$ (434)	$ (434)
Dividends and distributions declared: Common unit distribution declared ($0.0075 per unit)												(54)	(54)
Redemption of common units									42		42	(202)	(160)
Net earnings										6,330	6,330	47	6,377
Balance at Sep. 30, 2018							$ 10,050	$ 119	$ 231,750	$ (131,543)	$ 110,376	$ 1,249	$ 111,625
Balance, shares at Sep. 30, 2018							925	11,884