Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($) $ in Thousands	Oct. 24, 2014	Jun. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Loans Receivable with Fixed Rates of Interest, Pool, Maturity Period	10 years
Loans Receivable with Fixed Rates of Interest	$ 29,100
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 19,610	$ 19,945
Derivative Liability, Fair Value, Amount Not Offset Against Collateral		202	241
Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 20,000
Derivative, Fixed Interest Rate	2.10%
Derivative, Collateral, Right to Reclaim Cash		250
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		19,610	19,945
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivative [Line Items]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral		$ 202	$ 241