Stockholder's Equity - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stockholders' Equity Note [Abstract]
Net income (loss)	$ 354	$ (6,380)	$ (14,609)	$ (26,859)
Less deemed dividend related to beneficial conversion feature on Series B Preferred Stock	0	(12,500)	0	(12,500)
Net income (loss) attributable to common stockholders	$ 354	$ (18,880)	$ (14,609)	$ (39,359)
Weighted average common stock shares outstanding, basic (in shares)	89,649,922	64,900,007	81,612,112	60,599,456
Basic earnings (loss) per share (in usd per share)	$ 0	$ (0.29)	$ (0.18)	$ (0.65)
Net income (loss)	$ 354	$ (18,880)	$ (14,609)	$ (39,359)
Effect of dilutive options and warrants (in shares)	15,488,972	0	0	0
Weighted average common stock shares outstanding, diluted (in shares)	105,138,894	64,900,007	81,612,112	60,599,456
Diluted earnings (loss) per share (in usd per share)	$ 0	$ (0.29)	$ (0.18)	$ (0.65)