Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares Outstanding at the beginning of the period	1,877,455
Number of shares Granted	372,750	156,600
Number of shares Exercised	(375,255)
Number of shares Forfeited	(44,025)
Number of shares Expired/cancelled	(26,600)
Number of shares Outstanding at the end of the period	1,799,925	1,877,455
Number of shares Exercisable at end of the period	1,242,475
Weighted Average Exercise Price Outstanding at the beginning of the period	$ 7.64
Weighted Average Exercise Price Granted	10.98	$ 9.88
Weighted Average Exercise Price Exercised	6.84
Weighted Average Exercise Price Forfeited	10.36
Weighted Average Exercise Price Expired/cancelled	9.18
Weighted Average Exercise Price Outstanding at the end of the period	8.41	$ 7.64
Weighted Average Exercise Price Exercisable at end of the period	$ 7.58
Weighted Average Remaining Contractual Term Outstanding	3 years 9 months 29 days
Weighted Average Remaining Contractual Term Exercisable	2 years 11 months 23 days
Aggregate Intrinsic Value Outstanding	$ 25,352
Aggregate Intrinsic Value Exercisable	$ 18,533