XML 68 R57.htm IDEA: XBRL DOCUMENT
v3.23.1

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 4,537,079 | $ 4,524,514
Estimated Fair Value Asset (Liability) | (30,253) | (43,167)
Impact of settled to market contracts | 31,200 | 38,300
Interest rate swaps |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 6,900 |
Cash flow hedges |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 800,000 | 800,000
Estimated Fair Value Asset (Liability) | 4,322 | 1,937
Cash flow hedges | Interest rate swaps | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 600,000 | $ 400,000
Weighted Average Maturity (In years) | 2 years 7 months 6 days | 2 years 8 months 12 days
Weighted Average Rate, Received | 4.64% | 4.09%
Weighted Average Rate, Contract pay rate | 3.64% | 3.51%
Estimated Fair Value Asset (Liability) | $ 1,704 | $ 0
Cash flow hedges | Forward starting interest rate swaps | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount |  | $ 200,000
Weighted Average Maturity (In years) |  | 3 years 3 months 18 days
Weighted Average Rate, Received |  | 0.00%
Weighted Average Rate, Contract pay rate |  | 3.90%
Estimated Fair Value Asset (Liability) |  | $ 0
Cash flow hedges | Interest rate collars | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 200,000 | $ 200,000
Weighted Average Maturity (In years) | 3 years 3 months 18 days | 3 years 6 months
Estimated Fair Value Asset (Liability) | $ 2,618 | $ 1,937
Economic hedges | Cash flow hedges | Interest rate swaps |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 800,000 |
Economic hedges | Economic hedges |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 3,730,492 | 3,720,400
Estimated Fair Value Asset (Liability) | (34,601) | (45,121)
Economic hedges | Economic hedges | Interest rate swaps |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 3,300,000 |
Economic hedges | Economic hedges | Interest rate swaps | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 1,682,955 | $ 1,685,263
Weighted Average Maturity (In years) | 5 years 4 months 24 days | 5 years 8 months 12 days
Weighted Average Rate, Received | 4.10% | 4.11%
Weighted Average Rate, Contract pay rate | 5.93% | 5.55%
Estimated Fair Value Asset (Liability) | $ (68,090) | $ (95,114)
Economic hedges | Economic hedges | Interest rate swaps | Interest rate swap on tax advantaged economic development bond |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 6,850 | $ 7,062
Weighted Average Maturity (In years) | 6 years 8 months 12 days | 6 years 10 months 24 days
Weighted Average Rate, Received | 3.96% | 4.49%
Weighted Average Rate, Contract pay rate | 5.09% | 5.09%
Estimated Fair Value Asset (Liability) | $ (261) | $ (193)
Economic hedges | Economic hedges | Reverse interest rate swaps | Commercial loan |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 1,682,955 | $ 1,685,263
Weighted Average Maturity (In years) | 5 years 4 months 24 days | 5 years 8 months 12 days
Weighted Average Rate, Received | 5.93% | 5.55%
Weighted Average Rate, Contract pay rate | 4.10% | 4.11%
Estimated Fair Value Asset (Liability) | $ 33,841 | $ 50,267
Economic hedges | Economic hedges | Risk participation agreements with dealer banks |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 356,227 | $ 341,885
Weighted Average Maturity (In years) | 6 years 3 months 18 days | 6 years 9 months 18 days
Estimated Fair Value Asset (Liability) | $ (106) | $ (89)
Economic hedges | Economic hedges | Forward sale commitments |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 1,505 | $ 927
Weighted Average Maturity (In years) | 2 months 12 days | 2 months 12 days
Estimated Fair Value Asset (Liability) | $ 15 | $ 8
Non-hedging derivatives |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | 6,587 | 4,114
Estimated Fair Value Asset (Liability) | 26 | 17
Non-hedging derivatives | Commitments to lend |  |
Interest rate swap agreements and non-hedging derivative assets and liabilities |  |
Notional Amount | $ 6,587 | $ 4,114
Weighted Average Maturity (In years) | 2 months 12 days | 2 months 12 days
Estimated Fair Value Asset (Liability) | $ 26 | $ 17

X
- Definition Represents information pertaining to the derivative weighted average rate which is paid. + References No definition available. + Details
Name: | bhlb_DerivativeWeightedAverageRatePaid
Namespace Prefix: | bhlb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents information pertaining to the derivative weighted average rate which is received. + References No definition available. + Details
Name: | bhlb_DerivativeWeightedAverageRateReceived
Namespace Prefix: | bhlb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair Value Estimates, Impact of Settled to Market Contract + References No definition available. + Details
Name: | bhlb_FairValueEstimatesImpactofSettledtoMarketContract
Namespace Prefix: | bhlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126966630&loc=d3e41228-113958 + Details
Name: | us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageRemainingMaturity1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentDetailAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=bhlb_ForwardStartingInterestRateSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=bhlb_InterestRateCollarsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=bhlb_EconomicHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_NontaxableMunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=bhlb_ReverseInterestRateSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=bhlb_RiskParticipationAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=bhlb_ForwardSaleCommitmentContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommitmentsToExtendCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |