Share-based Compensation - Schedule of Stock Options Activity (Details)	6 Months Ended
	Jun. 30, 2016 $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares Options, Outstanding at beginning of period | shares	1,028,935
Number of shares Options, Granted | shares	157,200
Number of shares Options, Exercised | shares	(109,151)
Number of shares Options, Repurchased | shares	(225,542)
Number of shares Options, Canceled or Expired | shares	(14,212)
Number of shares Options, Outstanding at end of period | shares	837,230
Number of shares Options, Exercisable at end of period | shares	549,215
Weighted Average Exercise Price, Outstanding at beginning of period | $ / shares	$ 6.03
Weighted Average Exercise Price, Granted | $ / shares	11.97
Weighted Average Exercise Price, Exercised | $ / shares	4.24
Weighted Average Exercise Price, Repurchased | $ / shares	4.37
Weighted Average Exercise Price, Forfeited or expired | $ / shares	11.19
Weighted Average Exercise Price, Outstanding at end of period | $ / shares	7.78
Weighted Average Exercise Price, Exercisable at end of period | $ / shares	$ 6.09