XML 75 R64.htm IDEA: XBRL DOCUMENT v2.4.1.9
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details 3) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Offsetting of Financial Liabilities and Derivative Liabilities    
Gross Amounts of Recognized Liabilities $ (25,546,000)us-gaap_DerivativeFairValueOfDerivativeLiability $ (18,282,000)us-gaap_DerivativeFairValueOfDerivativeLiability
Gross Amounts Offset in the Statements of Condition   58,000us-gaap_DerivativeLiabilityFairValueGrossAsset
Net Amounts of Liabilities Presented in the Statements of Condition (25,546,000)us-gaap_DerivativeLiabilities (18,224,000)us-gaap_DerivativeLiabilities
Gross Amounts Not Offset in the Statements of Condition    
Financial instruments 20,456,000bhlb_DerivativeCollateralRightToReclaimFinancialInstruments 14,984,000bhlb_DerivativeCollateralRightToReclaimFinancialInstruments
Securities and Cash Collateral Pledged 5,090,000bhlb_DerivativeCollateralRightToReclaimSecuritiesAndCash 3,190,000bhlb_DerivativeCollateralRightToReclaimSecuritiesAndCash
Net Amount   (50,000)us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
Interest rate swaps    
Interest Rate Swap Agreements ("Swap Agreements")    
Amount of collateral posted for the net liability positions 25,500,000us-gaap_CollateralAlreadyPostedAggregateFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember		 18,200,000us-gaap_CollateralAlreadyPostedAggregateFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
Institutional counterparties    
Offsetting of Financial Liabilities and Derivative Liabilities    
Gross Amounts of Recognized Liabilities (25,546,000)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember		 (18,232,000)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember
Gross Amounts Offset in the Statements of Condition   58,000us-gaap_DerivativeLiabilityFairValueGrossAsset
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember
Net Amounts of Liabilities Presented in the Statements of Condition (25,546,000)us-gaap_DerivativeLiabilities
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember		 (18,174,000)us-gaap_DerivativeLiabilities
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember
Gross Amounts Not Offset in the Statements of Condition    
Financial instruments 20,456,000bhlb_DerivativeCollateralRightToReclaimFinancialInstruments
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember		 14,984,000bhlb_DerivativeCollateralRightToReclaimFinancialInstruments
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember
Securities and Cash Collateral Pledged 5,090,000bhlb_DerivativeCollateralRightToReclaimSecuritiesAndCash
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember		 3,190,000bhlb_DerivativeCollateralRightToReclaimSecuritiesAndCash
/ us-gaap_CounterpartyNameAxis
= bhlb_InstitutionalCounterpartiesMember
Commercial counterparties    
Offsetting of Financial Liabilities and Derivative Liabilities    
Gross Amounts of Recognized Liabilities   (50,000)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_CounterpartyNameAxis
= bhlb_CommercialCounterpartiesMember
Net Amounts of Liabilities Presented in the Statements of Condition   (50,000)us-gaap_DerivativeLiabilities
/ us-gaap_CounterpartyNameAxis
= bhlb_CommercialCounterpartiesMember
Gross Amounts Not Offset in the Statements of Condition    
Net Amount   $ (50,000)us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= bhlb_CommercialCounterpartiesMember