Stock-Based Compensation (Details 1) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary of the restricted stock transactions
Number of Options Outstanding	89,832	50,062	5,531
Granted	55,081	56,756	50,062
Vested	(36,142)	(16,529)	(5,531)
Forfeited/canceled/expired	(1,982)	(457)	0
Number of Options Outstanding	106,789	89,832	50,062
Weighted Average Grant Date Fair Value, Outstanding	$ 41.2	$ 46.51	$ 17.97
Weighted Average Grant Date Fair Value, Granted	40.09	38.11	46.51
Weighted Average Grant Date Fair Value, Vested	42.11	46.51	17.97
Weighted Average Grant Date Fair Value, Forfeited/canceled/expired	43.62	46.51	0
Weighted Average Grant Date Fair Value, Outstanding	$ 40.28	$ 41.2	$ 46.51
Weighted average remaining contractual life (in years)	4 years 8 months 12 days