XML 69 R59.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

COMMITMENTS AND CONTINGENCIES (Commitments Without Recorded Liability) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Reserve for Unfunded Loan Commitments | $ 13,600,000 |  |
Mortgage loan applications, day interest rate is locked | 45 days |  |
Minimum [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Mortgage loan applications, day interest rate is locked | 30 days |  |
Maximum [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Mortgage loan applications, day interest rate is locked | 60 days |  |
Commitments to Extend Credit [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Contract or Notional Amount | $ 3,913,474,000 |  | $ 3,887,423,000
Financial Standby Letter of Credit [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Contract or Notional Amount | 28,620,000 |  | 29,312,000
Loan Origination Commitments [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Contract or Notional Amount | 36,624,000 |  | 27,487,000
Risk Participation Agreement [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Contract or Notional Amount | 45,936,000 |  | 46,348,000
Loans Held for Sale Origination Commitments [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Contract or Notional Amount | 22,625,000 |  | 19,572,000
Commitments to Sell Loans Secured by one to four Residential Properties [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Contract or Notional Amount | 9,313,000 |  | 8,437,000
Counterparty default losses on forward contracts | 0 | $ 0 |
Commitments to Sell Mortgage Backed Securities [Member] |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Contract or Notional Amount | $ 16,000,000 |  | $ 17,000,000

X
- Definition Mortgage Loan Applications, Day Interest Rate is Locked + References No definition available. + Details
Name: | banr_MortgageLoanApplicationsDayInterestRateIsLocked
Namespace Prefix: | banr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unfunded Loan Commitments + References No definition available. + Details
Name: | banr_ReserveforUnfundedLoanCommitments
Namespace Prefix: | banr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References No definition available. + Details
Name: | us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_FairValueOffBalanceSheetRisksDisclosureInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the loss on termination of a contract for default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 912 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482291/912-20-45-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 912 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482269/912-20-50-1 + Details
Name: | us-gaap_LossOnContractTerminationForDefault
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_FinancialStandbyLetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_LoanOriginationCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=banr_RiskParticipationAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=banr_LoansHeldForSaleOriginationCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=banr_CommitmentstoSellLoansSecuredbyonetofourResidentialPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=banr_CommitmentsToSellMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |