CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Comprehensive Income (Loss) [Member]	Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Paid-in Capital [Member]	Retained Deficit [Member]	Non-controlling Interest [Member]
Balance, at beginning at Dec. 31, 2015	$ 225,055	$ (65,174)	$ 1	$ 87	$ (2)	$ 270,749	$ (64,087)	$ 18,307
Balance, at beginning (in shares) at Dec. 31, 2015				8,717,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Series D preferred stock dividends (9.0% per year)	(900)					(900)
Net income (loss)	322	322					37	285
Balance, at the end at Dec. 31, 2016	224,477	(64,852)	1	$ 87	(2)	269,849	(64,050)	18,592
Balance, at the end (in shares) at Dec. 31, 2016				8,717,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Series D preferred stock dividends (9.0% per year)	(900)					(900)
Net income (loss)	(15,316)	(15,316)					(15,815)	499
Balance, at the end at Dec. 31, 2017	208,261	(80,168)	1	$ 87	(2)	268,949	(79,865)	19,091
Balance, at the end (in shares) at Dec. 31, 2017				8,717,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Series D preferred stock dividends (9.0% per year)	(900)					(900)
Net income (loss)	183,040	181,450					181,450	1,590
Redemption of Series D preferred stock	(10,000)		$ (1)			(9,999)
Balance, at the end at Dec. 31, 2018	$ 380,401	$ 101,282		$ 87	$ (2)	$ 258,050	$ 101,585	$ 20,681
Balance, at the end (in shares) at Dec. 31, 2018				8,717,967