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LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Financing Receivable, Loan Modification, Financial Effect) (Details) | Mar. 31, 2023 Months
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One- to four- family construction | Extended Maturity |
Financing Receivable, Loan Modification, Financial Effect [Line Items] |
Financing Receivable, Modified, Weighted Average Term Increase in Months | 7

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- Definition Financing Receivable, Loan Modification, Financial Effect [Line Items] + References No definition available. + Details
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- Definition Financing Receivable, Modified, Weighted Average Term Increase in Months + References No definition available. + Details
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Namespace Prefix: | banr_
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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