Stock-Based Compensation (Details 1) - Non Qualified Stock Option [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period, Number of options | shares	110,550
Granted, Number of options | shares	0
Exercised, Number of options | shares	(41,900)
Forfeited, Number of options | shares	(500)
Expired, Number of options | shares	(600)
Outstanding at end of period, Number of options | shares	67,550
Exercisable at end of period, Number of options | shares	64,150
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period, Weighted average exercise price (in dollars per share) | $ / shares	$ 14.54
Granted, Weighted average exercise price (in dollars per share) | $ / shares	0.00
Exercised, Weighted average exercise price (in dollars per share) | $ / shares	13.16
Forfeited, Weighted average exercise price (in dollars per share) | $ / shares	15.65
Expired, Weighted average exercise price (in dollars per share) | $ / shares	19.38
Outstanding at end of period, Weighted average exercise price (in dollars per share) | $ / shares	15.34
Exercisable at end of period, Weighted average exercise price (in dollars per share) | $ / shares	$ 15.30
Outstanding at end of period, Weighted average remaining contractual term	6 months 15 days
Exercisable at end of period, Weighted average remaining contractual term	6 months 1 day
Outstanding at end of period, Aggregate intrinsic value | $	$ 896
Exercisable at end of period, Aggregate intrinsic value | $	$ 853