XML 60 R49.htm IDEA: XBRL DOCUMENT v3.23.1

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Amortized Cost Basis of Loans (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	387
Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	10
Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.00%
Construction and commercial multifamily | Construction | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Construction and commercial multifamily | Construction | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Construction and commercial multifamily | Construction | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Construction and commercial multifamily | Construction | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Construction and commercial multifamily | Construction | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Construction and commercial multifamily | Construction | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.00%
Construction and commercial multifamily | Commercial multifamily | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Construction and commercial multifamily | Commercial multifamily | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Construction and commercial multifamily | Commercial multifamily | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Construction and commercial multifamily | Commercial multifamily | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Construction and commercial multifamily | Commercial multifamily | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Construction and commercial multifamily | Commercial multifamily | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.00%
Commercial real estate | Commercial real estate owner occupied | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Commercial real estate | Commercial real estate owner occupied | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	387
Commercial real estate | Commercial real estate owner occupied | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial real estate | Commercial real estate owner occupied | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial real estate | Commercial real estate owner occupied | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial real estate | Commercial real estate owner occupied | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.06%
Commercial real estate | Commercial real estate non-owner occupied | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Commercial real estate | Commercial real estate non-owner occupied | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial real estate | Commercial real estate non-owner occupied | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial real estate | Commercial real estate non-owner occupied | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial real estate | Commercial real estate non-owner occupied | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial real estate | Commercial real estate non-owner occupied | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.00%
Commercial and industrial | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Commercial and industrial | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial and industrial | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial and industrial | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial and industrial | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	10
Commercial and industrial | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.00%
Residential real estate | Residential real estate | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Residential real estate | Residential real estate | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Residential real estate | Residential real estate | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Residential real estate | Residential real estate | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Residential real estate | Residential real estate | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Residential real estate | Residential real estate | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.00%
Consumer loans | Home equity | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Consumer loans | Home equity | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Consumer loans | Home equity | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Consumer loans | Home equity | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Consumer loans | Home equity | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Consumer loans | Home equity | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.00%
Consumer loans | Consumer other | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Consumer loans | Consumer other | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Consumer loans | Consumer other | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Consumer loans | Consumer other | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Consumer loans | Consumer other | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Consumer loans | Consumer other | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0
Total Class of Financing Receivable	0.00%

X

- Definition

Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage

+ References

No definition available.

+ Details

Name:	bhlb_FinancingReceivableExcludingAccruedInterestModifiedInPeriodToTotalFinancingReceivablesPercentage
Namespace Prefix:	bhlb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Financing Receivable, Excluding Accrued Interest, Modified Period

+ References

No definition available.

+ Details

Name:	bhlb_FinancingReceivableExcludingAccruedInterestModifiedPeriod
Namespace Prefix:	bhlb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PrincipalForgivenessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ContractualInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=bhlb_ExtendedMaturityAndPrincipalForgivenessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=bhlb_ExtendedMaturityAndInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=bhlb_CommercialMultifamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=bhlb_RealEstateOwnerOccupiedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=bhlb_RealEstateNonOwnerOccupiedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=bhlb_CommercialAndIndustrialLoansPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=bhlb_ConsumerOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: