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Share-based Compensation - Schedule of Stock Options Activity (Details)
 9 Months Ended
Sep. 30, 2017
$ / shares
shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Number of shares Options, Outstanding at beginning of quarter | shares 850,232
Number of shares Options, Granted | shares 105,000
Number of shares Options, Exercised | shares (178,662)
Number of shares Options, Forfeited prior to vesting | shares (7,103)
Number of shares Options, Canceled or expired | shares (2,311)
Number of shares Options, Outstanding at end of quarter | shares 767,156
Number of shares Options, Exercisable at end of quarter | shares 502,940
Weighted Average Exercise Price, Outstanding at beginning of quarter | $ / shares $ 8.06
Weighted Average Exercise Price, Granted | $ / shares 9.90
Weighted Average Exercise Price, Exercised | $ / shares 5.90
Weighted Average Exercise Price, Forfeited prior to vesting | $ / shares 10.88
Weighted Average Exercise Price, Canceled or expired | $ / shares 9.68
Weighted Average Exercise Price, Outstanding at end of quarter | $ / shares 8.79
Weighted Average Exercise Price, Exercisable at end of Period | $ / shares $ 7.71