Stock-Based Compensation (Details 4) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Share-based Compensation [Abstract]
Options Outstanding, Expected to Vest, Shares | shares	568,820
Options Outstanding, Expected to Vest, Weighted-Average Exercise Price | $ / shares	$ 28.67
Options Outstanding, Expected to Vest, Aggregate Intrinsic Value | $	$ 10,667
Options Outstanding, Expected to Vest, Weighted-Average Remaining Term	6 years 7 months 6 days
Options Outstanding, Exercisable, Shares | shares	318,936
Options Outstanding, Exercisable, Weighted-Average Exercise Price | $ / shares	$ 24.65
Options Outstanding, Exercisable, Aggregate Intrinsic Value | $	$ 7,263
Options Outstanding, Exercisable, Weighted-Average Remaining Term	4 years 10 months 6 days