Stock-Based Compensation (Details 1) - Restricted Stock [Member]	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Summary of the restricted stock transactions
Shares, Outstanding	89,832
Shares, Vested	(3,002)
Shares, Forfeited	(1,982)
Shares, Outstanding	84,848
Weighted Average Grant Date Fair Value, Outstanding | $ / shares	$ 41.2
Weighted Average Grant Date Fair Value, Vested | $ / shares	45.56
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	43.62
Weighted Average Grant Date Fair Value, Outstanding | $ / shares	$ 40.99