CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Comprehensive Income (Loss) [Member]	Common Stock [Member]	Treasury Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Non-controlling Interest [Member]	Total
Balance at beginning at Dec. 31, 2018	$ 101,282	$ 87	$ (2)	$ 258,050	$ 101,585	$ 20,681	$ 380,401
Balance at beginnng (in shares) at Dec. 31, 2018		8,717,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distribution to equity partner				(112)			(112)
Net income (loss)	(11,954)				(11,954)	562	(11,392)
Balance at ending at Jun. 30, 2019	89,328	$ 87	(2)	257,938	89,631	21,243	368,897
Balance at ending (in shares) at Jun. 30, 2019		8,717,967
Balance at beginning at Mar. 31, 2019	95,673	$ 87	(2)	257,983	95,976	20,864	374,908
Balance at beginnng (in shares) at Mar. 31, 2019		8,717,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distribution to equity partner				(45)			(45)
Net income (loss)	(6,345)				(6,345)	379	(5,966)
Balance at ending at Jun. 30, 2019	89,328	$ 87	(2)	257,938	89,631	21,243	368,897
Balance at ending (in shares) at Jun. 30, 2019		8,717,967
Balance at beginning at Dec. 31, 2019	74,362	$ 87	(2)	257,853	74,665	21,464	354,067
Balance at beginnng (in shares) at Dec. 31, 2019		8,717,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	455				455	400	855
Balance at ending at Jun. 30, 2020	74,817	$ 87	(2)	257,853	75,120	21,864	354,922
Balance at ending (in shares) at Jun. 30, 2020		8,717,967
Balance at beginning at Mar. 31, 2020	78,975	$ 87	(2)	257,853	79,278	21,622	358,838
Balance at beginnng (in shares) at Mar. 31, 2020		8,717,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(4,158)				(4,158)	242	(3,916)
Balance at ending at Jun. 30, 2020	$ 74,817	$ 87	$ (2)	$ 257,853	$ 75,120	$ 21,864	$ 354,922
Balance at ending (in shares) at Jun. 30, 2020		8,717,967