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Derivative Instruments and Hedging Activities (Summary of Fair Value of Derivative Instruments) (Details) (Interest Rate Swap [Member], Other Liabilities [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Interest Rate Swap [Member] | Other Liabilities [Member]
   
Derivative [Line Items]    
Derivatives designated as hedging instruments under GAAP, Fair Value $ 289us-gaap_DerivativeInstrumentsInHedgesLiabilitiesAtFairValue
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
$ 434us-gaap_DerivativeInstrumentsInHedgesLiabilitiesAtFairValue
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember