Earnings per Share - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator
Net Income (loss)	$ (28,012)	$ 3,423	$ (16,856)	$ 16,215
Denominator
Weighted-average shares outstanding (in shares)	42,524,400	21,448,892	35,341,994	21,406,599
Effect of dilutive securities (in shares)	216,604	194,509	221,038	197,536
Weighted-average diluted shares (in shares)	42,741,004	21,643,401	35,563,032	21,604,135
Basic earnings per share (in usd per share)	$ (0.66)	$ 0.16	$ (0.48)	$ 0.76
Diluted earnings per share (in usd per share)	$ (0.66)	$ 0.16	$ (0.47)	$ 0.75