Stock-Based Compensation - Summary of Stock Option Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares Outstanding at the beginning of the period | shares	1,297,932
Number of shares Granted | shares	482,500
Number of shares Exercised | shares	(255,581)
Number of shares Forfeited | shares	(85,773)
Number of shares Outstanding at the end of the period | shares	1,439,078
Number of shares Exercisable at end of the period | shares	716,351
Weighted Average Exercise Price Outstanding at the beginning of the period | $ / shares	$ 10.24
Weighted Average Exercise Price Granted | $ / shares	11.26
Weighted Average Exercise Price Exercised | $ / shares	6.44
Weighted Average Exercise Price Forfeited | $ / shares	17.50
Weighted Average Exercise Price Outstanding at the end of the period | $ / shares	10.83
Weighted Average Exercise Price Exercisable at end of the period | $ / shares	$ 9.44
Weighted Average Remaining Contractual Term Outstanding	4 years 4 months 9 days
Weighted Average Remaining Contractual Term Exercisable	3 years 1 month 6 days
Aggregate Intrinsic Value Outstanding | $	$ 10,116
Aggregate Intrinsic Value Exercisable | $	$ 5,964