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	$ 71		$ 72		72
Stock-based compensation, shares								88
Long-term incentive												$ 85	85
Cancellation of LTIP units									1,941		1,941	(1,941)
Issuance of common stock								$ 47	$ 45,841		$ 45,888		45,888
Issuance of common stock, shares								4,772
Issuance of common units												$ 285	285
Dividends and distributions declared: Common stock (per share)										(4,520)	(4,520)		(4,520)
Dividends and distributions declared: Preferred stock	$ (650)	$ (650)	$ (650)	$ (194)	$ (194)	$ (194)
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	(11,030)	(980)		(980)
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										2,575	2,575	17	2,592
Balance at Jun. 30, 2017							$ 10,050	$ 116	228,069	(125,843)	112,392	1,273	113,665
Balance, shares at Jun. 30, 2017							925	11,628
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								$ 1	490		491		491
Stock-based compensation, shares								20
Issuance of common stock									257		257		257
Issuance of common stock, shares								28
Issuance of common units												50	50
Dividends and distributions declared: Common stock (per share)										(4,633)	(4,633)		(4,633)
Dividends and distributions declared: Preferred stock				$ (289)	$ (289)	$ (289)
Dividends and distributions declared: Common unit distribution declared ($0.0075 per unit)												(36)	(36)
Net earnings										3,672	3,672	27	3,699
Balance at Jun. 30, 2018							$ 10,050	$ 119	$ 231,474	$ (131,739)	$ 109,904	$ 1,449	$ 111,353
Balance, shares at Jun. 30, 2018							925	11,882