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v3.24.1.1.u2

Income Taxes (Details) $ in Thousands | 9 Months Ended
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Sep. 30, 2023 USD ($)
Valuation Allowance [Abstract] |
Cumulative losses lookback period | 2 years
Deferred tax assets, valuation allowance | $ 369

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- Definition Represents the period for which prior cumulative losses are considered in assessing the realization of deferred tax assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | byfc_DeferredTaxAssetValuationAllowanceLookbackPeriod
Namespace Prefix: | byfc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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