Earnings per Share - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator
Net Income	$ 9,841	$ 5,275	$ 12,792	$ 5,473
Denominator
Weighted-average shares outstanding (in shares)	21,423,739	21,255,496	21,385,220	21,145,624
Effect of dilutive securities (in shares)	207,338	253,015	199,067	230,916
Weighted-average diluted shares (in shares)	21,631,077	21,508,511	21,584,287	21,376,540
Basic earnings per share (in usd per share)	$ 0.46	$ 0.25	$ 0.60	$ 0.26
Diluted earnings per share (in usd per share)	$ 0.45	$ 0.25	$ 0.59	$ 0.26