Derivatives and Hedging Activities (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Term of written loan commitments, days	60 days
Default Assumptions Percentage	100.00%
Government Agency Issued Bonds or MBS
Derivative [Line Items]
Collateral Already Posted, Aggregate Fair Value	53,500,000	$ 70,500,000
Collateral posted against derivative liabilities	53,500,000	70,500,000
Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative Asset, Notional Amount	250,000,000	$ 0