Share-Based Compensation - Summary of Income Tax Benefit Related to Share-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options	$ 1,610	$ 2,165	$ 979
Restricted stock	458	280	260
Total	$ 2,068	$ 2,445	$ 1,239