Stock Compensation Plans (Details 2) - 6 months ended Jun. 30, 2015 - $ / shares	Total
Shares, Unvested at June 30, 2015	7,927
Restricted Stock Units (RSUs) [Member]
Shares, Unvested at January 1, 2015	91,812
Shares, Granted	24,757
Shares, Vested	(12,846)
Shares, Forfeited	(29,178)
Shares, Unvested at June 30, 2015	74,545
Weighted-Average Grant Date Fair Value, Unvested at January 1, 2015	$ 21
Weighted-Average Grant Date Fair Value, Granted	32.3
Weighted-Average Grant Date Fair Value, Vested	17.2
Weighted-Average Grant Date Fair Value, Forfeited	19.48
Weighted-Average Grant Date Fair Value, Unvested at June 30, 2015	$ 25.86
Stock Grants [Member]
Shares, Unvested at January 1, 2015	5,767
Shares, Granted	15,006
Shares, Vested	(12,846)
Shares, Forfeited	0
Shares, Unvested at June 30, 2015	7,927
Weighted-Average Grant Date Fair Value, Unvested at January 1, 2015	$ 25.97
Weighted-Average Grant Date Fair Value, Granted	19.51
Weighted-Average Grant Date Fair Value, Vested	17.2
Weighted-Average Grant Date Fair Value, Forfeited	0
Weighted-Average Grant Date Fair Value, Unvested at June 30, 2015	$ 27.95