Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	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, 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	241		242		242
Stock-based compensation, shares					27
Issuance of common stock						103		103		103
Issuance of common stock, shares					12
Issuance of common units									50	50
Dividends and distributions declared: Common stock (per share)							(2,317)	(2,317)		(2,317)
Dividends and distributions declared: Preferred stock	$ (144)	$ (144)	$ (144)
Dividends and distributions declared: Common unit									(18)	(18)
Net earnings							786	786	6	792
Balance at Mar. 31, 2018				$ 10,050	$ 119	231,071	(132,164)	109,076	1,446	110,522
Balance, shares at Mar. 31, 2018				925	11,873
Balance at Dec. 31, 2018				$ 10,050	$ 119	231,805	(134,970)	107,004	848	107,852
Balance, shares at Dec. 31, 2018				925	11,886
Stock-based compensation						271		271		271
Stock-based compensation, shares					32
Dividends and distributions declared: Common stock (per share)							(2,324)	(2,324)		(2,324)
Dividends and distributions declared: Preferred stock	$ (145)	$ (145)	$ (145)
Dividends and distributions declared: Common unit									(11)	(11)
Redemption of common units						6		6	(48)	(42)
Net earnings							16	16	(1)	15
Balance at Mar. 31, 2019				$ 10,050	$ 119	$ 232,082	$ (137,423)	$ 104,828	$ 788	$ 105,616
Balance, shares at Mar. 31, 2019				925	11,918