Derivative Financial Instruments (Details) - Interest Rate Swap [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jan. 15, 2015
Long-term Borrowings [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Notional Amount	$ 110,000	$ 110,000
Derivative Fair Value, Asset	0	0
Derivative Fair Value, Liability	3,943	2,911
Net Ineffectiveness Hedge Gains/(Losses)	0	$ 0
Commercial Loan [Member] | Fair Value Hedges [Member]
Derivative [Line Items]
Notional Amount	9,950		$ 9,950
Derivative Fair Value, Asset	279
Derivative Fair Value, Liability	0
Net Ineffectiveness Hedge Gains/(Losses)	$ 0