Consolidated Statements of Changes in Stockholders' Deficit - USD ($) $ in Thousands	Total	Preferred Stock Series C convertible preferred stock	Common Stock Class A common stock	Common Stock Class B common stock	Additional paid-in capital	Accumulated other comprehensive loss, net	Accumulated deficit
Beginning Balance at Dec. 31, 2013	$ (52,034)	$ 4			$ 525,334	$ (602)	$ (576,770)
Beginning Balance, Shares at Dec. 31, 2013		380,000	4,166,991	2,340,353
Stock-based compensation	1				1
Net loss	(19,951)						(19,951)
Unrealized gain on derivative instrument	194					194
Ending Balance at Dec. 31, 2014	(71,790)	$ 4			525,335	(408)	(596,721)
Ending Balance, Shares at Dec. 31, 2014		380,000	4,166,991	2,340,353
Stock-based compensation	9				9
Net loss	(26,955)						(26,955)
Unrealized gain on derivative instrument	188					188
Ending Balance at Dec. 31, 2015	$ (98,548)	$ 4			$ 525,344	$ (220)	$ (623,676)
Ending Balance, Shares at Dec. 31, 2015		380,000	4,166,991	2,340,353