XML 65 R52.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) store | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of full-service banking offices | store |  | 5 |  |
Cash exceeded federally insured limits |  | $ 160,300 |  |
Cash held, not federally insured |  | 152,700 |  |
Balance outstanding in joint ventures | $ 1,406 | 2,150 | $ 1,406 |
Income recognized on joint ventures |  | $ 224 | 173 | $ 57
Tax benefit greater than being realized on examination |  | 50.00% |  |
Collateral pledged for advances | 110,951 | $ 242,335 | 110,951 |
Investment | 0 | 0 |  |
Maximum exposure to loss related to investments |  | 0 |  |
Cash [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Collateral pledged for advances | 3,300 | $ 3,300 | 3,300 |
Minimum [Member] | Buildings And Related Components [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life |  | 3 years |  |
Minimum [Member] | Furniture, fixtures and equipment [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life |  | 2 years |  |
Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Home equity lines of credit combined with the balance of the prior mortgage liens |  | 89.90% |  |
Maturity of cash, deposits with other financial institutions |  | 90 days |  |
Maximum [Member] | Buildings And Related Components [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life |  | 40 years |  |
Maximum [Member] | Furniture, fixtures and equipment [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life |  | 25 years |  |
Single-Family Residential [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Collateral pledged for advances | 87,076 | $ 203,627 | 87,076 |
Single-Family Residential [Member] | Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Lending amount up to the percentage of collateral |  | 80.00% |  |
Multi-Family Residential [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Collateral pledged for advances | 10,970 | $ 21,650 | 10,970 |
Multi-Family Residential [Member] | Minimum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Fixed rates loans limit, period |  | 3 years |  |
Multi-Family Residential [Member] | Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Lending amount up to the percentage of collateral |  | 85.00% |  |
Fixed rates loans limit, period |  | 5 years |  |
Commercial Real Estate [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Collateral pledged for advances | $ 5,750 | $ 9,801 | $ 5,750 |
Commercial Real Estate [Member] | Minimum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Fixed rates loans limit, period |  | 3 years |  |
Commercial Real Estate [Member] | Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Lending amount up to the percentage of collateral |  | 85.00% |  |
Fixed rates loans limit, period |  | 5 years |  |
Construction loans [Member] | Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Lending amount up to the percentage of collateral |  | 80.00% |  |
Maturity of construction loans convert to permanent loans |  | 30 years |  |

X
- Definition Cash, Exceeded Federally Insured Limits Amount + References No definition available. + Details
Name: | cfbk_CashExceededFederallyInsuredLimitsAmount
Namespace Prefix: | cfbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Combined Percentage Of Commercial Real Estate And Commercial Construction In Portfolio Loans + References No definition available. + Details
Name: | cfbk_CombinedPercentageOfCommercialRealEstateAndCommercialConstructionInPortfolioLoans
Namespace Prefix: | cfbk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Construction Loans maturity years + References No definition available. + Details
Name: | cfbk_ConstructionLoansMaturityYears
Namespace Prefix: | cfbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Joint Venture Incentive Payment + References No definition available. + Details
Name: | cfbk_JointVentureIncentivePayment
Namespace Prefix: | cfbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lending amount up to the percentage of collateral + References No definition available. + Details
Name: | cfbk_LendingAmountUpToPercentageOfCollateral
Namespace Prefix: | cfbk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maturity Of Cash And Cash Equivalents + References No definition available. + Details
Name: | cfbk_MaturityOfCashAndCashEquivalents
Namespace Prefix: | cfbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Mortgage Loans On Real Estate Fixed Rate Period + References No definition available. + Details
Name: | cfbk_MortgageLoansOnRealEstateFixedRatePeriod
Namespace Prefix: | cfbk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Full Service Banking Offices + References No definition available. + Details
Name: | cfbk_NumberOfFullServiceBankingOffices
Namespace Prefix: | cfbk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage Of Recognized Tax Benefits + References No definition available. + Details
Name: | cfbk_PercentageOfRecognizedTaxBenefits
Namespace Prefix: | cfbk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | cfbk_SignificantAccountingPoliciesLineItems
Namespace Prefix: | cfbk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
Name: | us-gaap_CashUninsuredAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For an unclassified balance sheet, amounts due from an entity in which the reporting entity shares joint control with another party or group. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.3) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
Name: | us-gaap_DueFromJointVentures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of the collateral pledged in support of federal home loan bank advances outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
Name: | us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of realized and unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27405-111563 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c),9(a)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
Name: | us-gaap_InvestmentTaxCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CashMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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