XML 141 R69.htm IDEA: XBRL DOCUMENT v2.4.1.9
LOANS (Details 3) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Non-accrual loans    
Non-accrual loans $ 20,539us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus $ 27,455us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Business Activity    
Non-accrual loans    
Non-accrual loans 14,778us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= bhlb_LoansFromBusinessActivitiesMember		 18,472us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= bhlb_LoansFromBusinessActivitiesMember
Acquired Loans    
Non-accrual loans    
Non-accrual loans 5,761us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= bhlb_LoansAcquiredFromBusinessCombinationsMember		 8,983us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= bhlb_LoansAcquiredFromBusinessCombinationsMember
Acquired credit impaired loans    
Non-accrual loans    
Non-accrual loans 1,200us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= bhlb_AcquiredCreditImpairedLoansMember		  
Residential | Mortgages    
Non-accrual loans    
Non-accrual loans 3,908us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_ResidentialPortfolioSegmentMember
Residential | Mortgages | Business Activity    
Non-accrual loans    
Non-accrual loans 2,526us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_ResidentialPortfolioSegmentMember
Residential | Mortgages | Acquired Loans    
Non-accrual loans    
Non-accrual loans 1,382us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_ResidentialPortfolioSegmentMember
Residential | Mortgages | 1-4 family    
Non-accrual loans    
Non-accrual loans 3,908us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= bhlb_Family1To4Member		 7,703us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= bhlb_Family1To4Member
Residential | Mortgages | 1-4 family | Business Activity    
Non-accrual loans    
Non-accrual loans 2,526us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= bhlb_Family1To4Member
Residential | Mortgages | 1-4 family | Acquired Loans    
Non-accrual loans    
Non-accrual loans 1,382us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= bhlb_Family1To4Member
Residential | Mortgages | Construction    
Non-accrual loans    
Non-accrual loans   164us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_ConstructionLoansMember
Residential | Mortgages | Construction | Business Activity    
Non-accrual loans    
Non-accrual loans   41us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_ConstructionLoansMember
Residential | Mortgages | Construction | Acquired Loans    
Non-accrual loans    
Non-accrual loans   123us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_ConstructionLoansMember
Commercial real estate    
Non-accrual loans    
Non-accrual loans 11,756us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 13,740us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_CommercialRealEstatePortfolioSegmentMember
Commercial real estate | Business Activity    
Non-accrual loans    
Non-accrual loans 9,940us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Commercial real estate | Acquired Loans    
Non-accrual loans    
Non-accrual loans 1,816us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
Commercial real estate | Construction    
Non-accrual loans    
Non-accrual loans 720us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_ConstructionLoansMember
Commercial real estate | Construction | Business Activity    
Non-accrual loans    
Non-accrual loans 720us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_ConstructionLoansMember
Commercial real estate | Single and multi-family    
Non-accrual loans    
Non-accrual loans 599us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= bhlb_SingleAndMultiFamilyMember
Commercial real estate | Single and multi-family | Business Activity    
Non-accrual loans    
Non-accrual loans 458us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= bhlb_SingleAndMultiFamilyMember
Commercial real estate | Single and multi-family | Acquired Loans    
Non-accrual loans    
Non-accrual loans 141us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Commercial real estate | Other commercial real estate    
Non-accrual loans    
Non-accrual loans 10,437us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_CommercialRealEstateMember
Commercial real estate | Other commercial real estate | Business Activity    
Non-accrual loans    
Non-accrual loans 8,762us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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= us-gaap_CommercialRealEstateMember
Commercial real estate | Other commercial real estate | Acquired Loans    
Non-accrual loans    
Non-accrual loans 1,675us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Commercial real estate | Business loans    
Non-accrual loans    
Non-accrual loans 1,661us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Commercial real estate | Business loans | Business Activity    
Non-accrual loans    
Non-accrual loans 850us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Commercial real estate | Business loans | Acquired Loans    
Non-accrual loans    
Non-accrual loans 811us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Commercial real estate | Business loans | Other commercial and industrial loans    
Non-accrual loans    
Non-accrual loans 1,661us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Commercial real estate | Business loans | Other commercial and industrial loans | Business Activity    
Non-accrual loans    
Non-accrual loans 850us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Commercial real estate | Business loans | Other commercial and industrial loans | Acquired Loans    
Non-accrual loans    
Non-accrual loans 811us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Consumer    
Non-accrual loans    
Non-accrual loans 3,214us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Consumer | Business Activity    
Non-accrual loans    
Non-accrual loans 1,462us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Consumer | Acquired Loans    
Non-accrual loans    
Non-accrual loans 1,752us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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Consumer | Home equity    
Non-accrual loans    
Non-accrual loans 1,740us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
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