Earnings per Share - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator
Net Income (loss)	$ 14,701	$ 7,257	$ 23,069	$ 11,156
Denominator
Weighted-average shares outstanding (in shares)	42,648,660	41,799,041	42,615,484	31,691,267
Effect of dilutive securities (in shares)	141,686	228,972	154,118	223,292
Weighted-average diluted shares (in shares)	42,790,346	42,028,013	42,769,602	31,914,559
Basic earnings per share (in usd per share)	$ 0.34	$ 0.17	$ 0.54	$ 0.35
Diluted earnings per share (in usd per share)	$ 0.34	$ 0.17	$ 0.54	$ 0.35