Stock-Based Compensation Plans (Details 2) - Jun. 30, 2015 - Restricted Stock [Member] - USD ($)		Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of Restricted Stock, Non-vested at December 31, 2014		54,050
Shares of Restricted Stock, Issued		0
Shares of Restricted Stock, Vested		0
Shares of Restricted Stock, Forfeited		0
Shares of Restricted Stock, Non-vested at June 30, 2015		54,050
Weighted Average Grant Date Fair Value, Non-vested at December 31, 2014		$ 26.58
Weighted Average Grant Date Fair Value, Issued		0
Weighted Average Grant Date Fair Value, Vested		0
Weighted Average Grant Date Fair Value, Forfeited		0
Weighted Average Grant Date Fair Value, Non-vested at June 30, 2015		$ 26.58
Weighted Average Remaining Contractual Term (Years), Non-vested at June 30, 2015		2 years 4 months 24 days
Aggregate Intrinsic Value (in dollars), Non-vested at June 30, 2015	[1]	$ 1,612,000

[1] The aggregate intrinsic value of non-vested restricted stock was calculated using the closing price of the Company's stock on June 30, 2015, the last trading day of the quarter, of $29.82 multiplied by the number of non-vested restricted shares outstanding.