Unaudited Condensed Consolidated Statement of Changes in Stockholders' Deficit - 9 months ended Sep. 30, 2018 - 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 deficit
Beginning Balance at Dec. 31, 2017	$ (95,914)	$ 4			$ 526,147	$ (622,065)
Beginning Balance, Shares at Dec. 31, 2017		380,000	4,166,991	2,340,353
Net income	3,298					3,298
Issuance of Class A common stock, Shares			75,000
Stock-based compensation	39				39
Ending Balance at Sep. 30, 2018	$ (92,577)	$ 4			$ 526,186	$ (618,767)
Ending Balance, Shares at Sep. 30, 2018		380,000	4,241,991	2,340,353