XML 73 R58.htm IDEA: XBRL DOCUMENT
v3.24.0.1

SECURITIES (Schedule of Credit Ratings) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Securities, Held-to-maturity | $ 1,059,387 | $ 1,117,967
U.S. Government and agency obligations |  |
Debt Securities, Held-to-maturity | 307 | 312
Municipal bonds |  |
Debt Securities, Held-to-maturity | 466,032 | 503,117
Corporate bonds |  |
Debt Securities, Held-to-maturity | 2,781 | 2,961
Mortgage-backed or related securities |  |
Debt Securities, Held-to-maturity | 590,267 | 611,577
Standard & Poor's, AAA to A Rating [Member] |  |
Debt Securities, Held-to-maturity | 473,958 | 509,286
Standard & Poor's, AAA to A Rating [Member] | U.S. Government and agency obligations |  |
Debt Securities, Held-to-maturity | 0 | 0
Standard & Poor's, AAA to A Rating [Member] | Municipal bonds |  |
Debt Securities, Held-to-maturity | 456,999 | 492,105
Standard & Poor's, AAA to A Rating [Member] | Corporate bonds |  |
Debt Securities, Held-to-maturity | 500 | 500
Standard & Poor's, AAA to A Rating [Member] | Mortgage-backed or related securities |  |
Debt Securities, Held-to-maturity | 16,459 | 16,681
Standard & Poor's, Not Rated [Member] |  |
Debt Securities, Held-to-maturity | 585,429 | 608,681
Standard & Poor's, Not Rated [Member] | U.S. Government and agency obligations |  |
Debt Securities, Held-to-maturity | 307 | 312
Standard & Poor's, Not Rated [Member] | Municipal bonds |  |
Debt Securities, Held-to-maturity | 9,033 | 11,012
Standard & Poor's, Not Rated [Member] | Corporate bonds |  |
Debt Securities, Held-to-maturity | 2,281 | 2,461
Standard & Poor's, Not Rated [Member] | Mortgage-backed or related securities |  |
Debt Securities, Held-to-maturity | $ 573,808 | $ 594,896

X
- Definition Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-14 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7A -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-7A + Details
Name: | us-gaap_HeldToMaturitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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

X
- Details
Name: | srt_CreditRatingStandardPoorsAxis=banr_StandardPoorsAAAtoARatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CreditRatingStandardPoorsAxis=banr_StandardPoorsNotRatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |