XML 74 R64.htm IDEA: XBRL DOCUMENT v3.25.3

COMMITMENTS AND CONTINGENCIES(Schedule of fair value, off balance risks, tax credit investments, commitment) (Details) - Not Funded - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Schedule of fair value, off balance risks, tax credit investments, commitment [Line Items]
Fair Value Disclosure, Off Balance Sheet Risk, Tax Credit Investment, Commitment	$ 112,518	$ 94,416
Fair Value Disclosure, Off Balance Sheet Risk, Limited Partnership Investment, Commitment	$ 11,940	$ 14,706

X

- Definition

Fair Value Disclosure, Off Balance Sheet Risk, Limited Partnership Investment, Commitment

+ References

No definition available.

+ Details

Name:	banr_FairValueDisclosureOffBalanceSheetRiskLimitedPartnershipInvestmentCommitment
Namespace Prefix:	banr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Fair Value Disclosure, Off Balance Sheet Risk, Tax Credit Investment, Commitment

+ References

No definition available.

+ Details

Name:	banr_FairValueDisclosureOffBalanceSheetRiskTaxCreditInvestmentCommitment
Namespace Prefix:	banr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Schedule of fair value, off balance risks, tax credit investments, commitment [Line Items]

+ References

No definition available.

+ Details

Name:	banr_ScheduleOfFairValueOffBalanceRisksTaxCreditInvestmentsCommitmentLineItems
Namespace Prefix:	banr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	banr_FundingStatusAxis=banr_NotFundedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: