Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 572	$ 1,482	$ 2,628	$ (909)
Net Income Allocated to Class A Common Stock	566	1,467	2,601	(900)
Net Income Allocated to Class B Common Stock	$ 6	$ 15	$ 27	$ (9)
Common Stock Class A [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Shares Outstanding, Basic	49,080	49,080	49,080	49,080
Weighted Average Shares Outstanding, Diluted	49,080	49,080	49,080	49,080
Basic earnings per share	$ 0.01	$ 0.03	$ 0.05	$ (0.02)
Diluted earnings per share	$ 0.01	$ 0.03	$ 0.05	$ (0.02)
Common Stock Class B [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Shares Outstanding, Basic and Diluted	1,002	1,002	1,002	1,002
Basic earnings per share	$ 0.01	$ 0.01	$ 0.03	$ (0.01)
Diluted earnings per share	$ 0.01	$ 0.01	$ 0.03	$ (0.01)