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, 2014							$ 38	$ 7	$ 137,940	$ (118,983)	$ 19,002	$ 90	$ 19,092
Balance, shares at Dec. 31, 2014							3,803	722
Stock-based compensation								$ 3	143		143		143
Long-term incentive plan												142	142
Issuance of common stock								$ 1	345		346		346
Issuance of common stock, shares								35
Issuance of common units												450	450
Net earnings										13,125	13,125	1,197	14,322
Balance at Dec. 31, 2015							$ 38	$ 8	138,428	(105,858)	32,616	1,879	34,495
Balance, shares at Dec. 31, 2015							3,803	760
Stock-based compensation									134		134		134
Stock-based compensation, shares								3
Long-term incentive plan												171	171
Issuance of common units												50	50
Dividends and distributions declared: Common stock (per share)										(347)	(347)		(347)
Dividends and distributions declared: Preferred stock	$ (3,090)	$ (3,090)	$ (3,090)
Redemption of Series A and Series B Preferred							$ (8)		(7,390)	(5,107)	(12,505)		(12,505)
Redemption of Series A and Series B Preferred, shares							(803)
Exchange of Series C and issuance of Series D Preferred Stock							$ 61,303		(12,517)	(20,417)	28,369		28,369
Exchange of Series C and issuance of Series D Preferred Stock, shares							3,245
Net earnings										22,795	22,795	727	23,522
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	1,151		1,152		1,152
Stock-based compensation, shares								94
Long-term incentive plan												85	85
Issuance of common stock						$ 1,210		$ 49	47,419		47,468		47,468
Issuance of common stock, shares								4,972
Issuance of common units												435	435
Dividends and distributions declared: Common stock (per share)										(9,103)	(9,103)		(9,103)
Dividends and distributions declared: Preferred stock	$ (650)	$ (650)	$ (650)	$ (483)	$ (483)	$ (483)
Dividends and distributions declared: Common units ($0.195 per share)												$ (18)	(18)
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 Stock							$ (51,283)	$ 60	61,273	(11,110)	(1,060)		(1,060)
Conversion of Series D Preferred to common stock and issuance of Series E Preferred Stock, shares							(5,320)	6,005
Warrant exchange									$ 289		$ 289		289
Cancellation of LTIP units									1,941		1,941	(1,941)
Net earnings										2,881	$ 2,881	$ 20	2,901
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