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Derivative Instruments and Hedging Activities, Derivative Contract Type (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
   
Derivatives in cash flow hedging relationships [Abstract]    
Amount of gain (loss) recognized in OCI on derivatives, net of tax (effective portion) $ 22 $ 214
Amount of gain (loss) recognized in income on derivative (ineffective portion) 0 0
Interest Rate Swap [Member] | Fair Value Hedging [Member] | Interest Income [Member]
   
Derivatives in fair value hedging relationships [Abstract]    
Gain or (Loss) on swaps (44) 51
Interest Rate Swap-10 Year Cash Flow [Member]
   
Derivatives, Fair Value [Line Items]    
Expiration date Sep. 15, 2020 Sep. 15, 2020
Interest Rate Swap-10 Year Cash Flow [Member] | Other Liabilities [Member]
   
Derivatives, Fair Value [Line Items]    
Notional/ contract amount 4,000 4,000
Estimated net fair value (256) (223)
Interest Rate Swap-10 Year Fair Value 1 [Member]
   
Derivatives, Fair Value [Line Items]    
Expiration date Aug. 15, 2021 Aug. 15, 2021
Interest Rate Swap-10 Year Fair Value 1 [Member] | Other Liabilities [Member]
   
Derivatives, Fair Value [Line Items]    
Notional/ contract amount 2,126 2,161
Estimated net fair value (33) 13
Interest Rate Swap-10 Year Fair Value 2 [Member]
   
Derivatives, Fair Value [Line Items]    
Expiration date Aug. 15, 2021 Aug. 15, 2021
Interest Rate Swap-10 Year Fair Value 2 [Member] | Other Liabilities [Member]
   
Derivatives, Fair Value [Line Items]    
Notional/ contract amount 2,004 2,037
Estimated net fair value (32) 11
Interest Rate Swap-10 Year Fair Value 3 [Member]
   
Derivatives, Fair Value [Line Items]    
Expiration date Sep. 26, 2022 Sep. 26, 2022
Interest Rate Swap-10 Year Fair Value 3 [Member] | Other Assets [Member]
   
Derivatives, Fair Value [Line Items]    
Notional/ contract amount 1,006  
Estimated net fair value 37  
Interest Rate Swap-10 Year Fair Value 3 [Member] | Other Liabilities [Member]
   
Derivatives, Fair Value [Line Items]    
Notional/ contract amount   1,025
Estimated net fair value   $ 72