CONSOLIDATED STATEMENT OF STOCKHOLDERS' DEFICIT (Unaudited) - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Common Stock Warrants	Additional Paid-in Capital	Accumulated Deficit
Beginning Balance at Dec. 31, 2016	$ (271,269)	$ 6,969	$ 5,672	$ 531,924	$ (815,834)
Beginning Balance, Shares at Dec. 31, 2016		13,938,000
Stock-based compensation	2,815	$ 248		2,567
Stock-based compensation, Shares		495,000
Tax withholdings related to equity awards	(271)	$ (13)		(258)
Tax withholdings related to equity awards, Shares		(27,000)
Common stock issued for debt conversions	7,789	$ 412		7,377
Common stock issued for debt conversions, Shares		826,000
Common stock warrants exercised	$ 2	$ 123	(2,115)	1,994
Common stock warrants exercised, Shares	246,793	247,000
Net loss	$ (44,373)				(44,373)
Ending Balance at Jun. 30, 2017	$ (305,307)	$ 7,739	$ 3,557	$ 543,604	$ (860,207)
Ending Balance, Shares at Jun. 30, 2017		15,479,000