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Net Loss Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Numerator:        
Net income (loss) $ 5,389 $ (15,660) $ (11,104) $ (26,197)
Denominator:        
Weighted average number of common shares outstanding 182,034,593 161,383,398 180,703,456 148,647,581
Effect of dilutive securities        
Stock options 677,279 0 0 0
Warrants 2,765,458 0 0 0
Dilutive potential common shares 3,442,737 0 0 0
Shares used in calculating diluted earnings per share 185,477,330 161,383,398 180,703,456 148,647,581