Stock-Based Compensation (Details 1) - Non Qualified Stock Option [Member] $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at December 31, 2013, Number of options (shares) | shares	110,550
Granted, Number of options (shares) | shares	0
Exercised, Number of options (shares) | shares	(2,900)
Forfeited, Number of options (shares) | shares	(300)
Expired, Number of options (shares) | shares	(600)
Outstanding at June 30, 2014, Number of options (shares) | shares	106,750
Exercisable at June 30, 2014, Number of options (shares) | shares	73,250
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding at December 31, 2013, Weighted average exercise price (usd per share) | $ / shares	$ 14.54
Granted, Weighted average exercise price (usd per share) | $ / shares	0.00
Exercised, Weighted average exercise price (usd per share) | $ / shares	10.04
Forfeited, Weighted average exercise price (usd per share) | $ / shares	13.17
Expired, Weighted average exercise price (usd per share) | $ / shares	19.38
Outstanding at June 30, 2014, Weighted average exercise price (usd per share) | $ / shares	14.64
Exercisable at June 30, 2014, Weighted average exercise price (usd per share) | $ / shares	$ 14.53
Outstanding at June 30, 2014, Weighted average remaining contractual term	1 year 2 months 16 days
Exercisable at June 30, 2014, Weighted average remaining contractual term	1 year 2 months 10 days
Outstanding at June 30, 2014, Aggregate intrinsic value | $	$ 1,362
Exercisable at June 30, 2014, Aggregate intrinsic value | $	$ 942