CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ DEFICIT (Unaudited) - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid in Capital	Deficit Accumulated
Beginning balance (in shares) at Dec. 31, 2017	246,660,367	246,660,367
Beginning balance at Dec. 31, 2017	$ (5,518)	$ 25	$ 801,787	$ (807,330)
Increase (Decrease) in Stockholders' Equity
Common stock issued in connection with exercise of stock options (in shares)		1,202,855
Common stock issued in connection with exercise of stock options	429		429
Stock based compensation expense	6,194		6,194
Net loss for the period	$ (65,795)			(65,795)
Ending balance (in shares) at Jun. 30, 2018	247,863,222	247,863,222
Ending balance at Jun. 30, 2018	$ (64,690)	$ 25	$ 808,410	$ (873,125)