XML 135 R96.htm IDEA: XBRL DOCUMENT
v3.20.4

Fair Value, Assets Measured on Non-Recurring Basis (FY) (Details) - Non-Recurring Basis [Member] - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2020
Assets Measured on Non-Recurring Basis [Abstract] |  |  |
Losses recognized on assets measured at fair value on a non-recurring basis | $ 0 | $ 45 |
Impaired Loans Carried at Fair Value of Collateral [Member] |  |  |
Assets Measured on Non-Recurring Basis [Abstract] |  |  |
Assets, fair value | 130 | 591 | $ 0
Losses recognized on assets measured at fair value on a non-recurring basis | 0 | 0 |
Real Estate Owned [Member] |  |  |
Assets Measured on Non-Recurring Basis [Abstract] |  |  |
Assets, fair value | 0 | 833 |
Losses recognized on assets measured at fair value on a non-recurring basis | $ 0 | $ 45 |

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

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 + Details
Name: | us-gaap_FairValueOptionChangesInFairValueGainLoss1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_FairValueByAssetClassAxis=us-gaap_RealEstateAcquiredInSatisfactionOfDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |