Net Income (Loss) Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net income (loss)	$ (8,404)	$ 5,389	$ (20,122)	$ (11,104)
Denominator:
Weighted average number of common shares outstanding	37,421,273	9,101,730	31,944,243	9,035,173
Effect of dilutive securities
Stock options	0	33,864	0	0
Warrants	0	138,273	0	0
Dilutive potential common shares	0	172,137	0	0
Weighted Average Number of Shares Outstanding, Diluted	37,421,273	9,273,867	31,944,243	9,035,173
Earnings Per Share, Basic	$ (0.22)	$ 0.59	$ (0.63)	$ (0.30)
Earnings Per Share, Diluted	$ (0.22)	$ 0.58	$ (0.63)	$ (0.30)