XML 77 R67.htm IDEA: XBRL DOCUMENT
v3.25.1

DERIVATIVES AND HEDGING (Narrative) (Details) - USD ($) | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024
--- | --- | --- | ---
Offsetting Assets and Liabilities [Line Items] |  |  |
Derivative net liability position | $ 0 |  |
Collateral posted | 17,800,000 | $ 19,900,000 |
Derivative Liability, Collateral Posted, Restricted Cash | 16,900,000 |  | $ 18,900,000
Interest rate swaps [Member] |  |  |
Offsetting Assets and Liabilities [Line Items] |  |  |
Variation Margin Adjustment, Derivative Liability | $ 12,600,000 | $ 15,600,000 |

X
- Definition Derivative Liability, Collateral Posted, Restricted Cash + References No definition available. + Details
Name: | banr_DerivativeLiabilityCollateralPostedRestrictedCash
Namespace Prefix: | banr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [Line Items] for Offsetting Assets and Liabilities [Table] + References No definition available. + Details
Name: | banr_OffsettingAssetsandLiabilitiesLineItems
Namespace Prefix: | banr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Variation Margin Adjustment, Derivative Liability + References No definition available. + Details
Name: | banr_VariationMarginAdjustmentDerivativeLiability
Namespace Prefix: | banr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H + Details
Name: | us-gaap_CollateralAlreadyPostedAggregateFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H + Details
Name: | us-gaap_DerivativeNetLiabilityPositionAggregateFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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