v3.25.4

Fair Value (as Restated), Assets Measured on Non-Recurring Basis (Details) - Non-Recurring Basis [Member] - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Impaired Loans Carried at Fair Value [Member] |  |
Fair Value, Net Asset (Liability) [Abstract] |  |
Assets, fair value |  | $ 0
Liabilities fair value |  | $ 0
Real Estate [Member] | Multi-Family [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | $ 4,110 |
Real Estate [Member] | Commercial Real Estate [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 1,768 |
SBA Loans [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 35 |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Real Estate [Member] | Multi-Family [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Real Estate [Member] | Commercial Real Estate [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | SBA Loans [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 0 |
Significant Other Observable Inputs (Level 2) [Member] | Real Estate [Member] | Multi-Family [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 0 |
Significant Other Observable Inputs (Level 2) [Member] | Real Estate [Member] | Commercial Real Estate [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 0 |
Significant Other Observable Inputs (Level 2) [Member] | SBA Loans [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Real Estate [Member] | Multi-Family [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 4,110 |
Significant Unobservable Inputs (Level 3) [Member] | Real Estate [Member] | Commercial Real Estate [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | 1,768 |
Significant Unobservable Inputs (Level 3) [Member] | SBA Loans [Member] |  |
Assets Measured on Nonrecurring Basis [Abstract] |  |
Individually evaluated loans | $ 35 |

X
- References No definition available. + Details
Name: | byfc_AssetMeasuredOnNonrecurringBasisAbstract
Namespace Prefix: | byfc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_FairValueNetAssetLiabilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.5.a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11C + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=byfc_ImpairedLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=byfc_MultifamilyLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=byfc_SmallBusinessAdministrationLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |