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Loans (Individually Evaluated For Impairment By Class Of Loans) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | $ 3,335 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance | $ 4,530 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 3,776 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance | 6,124 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Impaired Financing Receivable, Unpaid Principal Balance, Total | 7,111 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance | 10,654 us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,539 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment | 2,834 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 3,731 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment | 6,079 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Impaired Financing Receivable, Recorded Investment, Total | 6,270 us-gaap_ImpairedFinancingReceivableRecordedInvestment | 8,913 us-gaap_ImpairedFinancingReceivableRecordedInvestment
Impaired Financing Receivable, Allocated Loans and Leases | 64 us-gaap_ImpairedFinancingReceivableRelatedAllowance | 1,125 us-gaap_ImpairedFinancingReceivableRelatedAllowance
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 2,642 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment | 4,187 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 3,785 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment | 5,872 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment
Impaired Financing Receivable, Average Recorded Investment, Total | 6,427 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment | 10,059 us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized | 221 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod | 223 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod
Impaired Financing Receivable, Interest Income Recognized, Total | 221 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod | 223 us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Commercial Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 135 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 135 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 510 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 872 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 121 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 120 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 510 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 872 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable, Allocated Loans and Leases | 29 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 532 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 121 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 292 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 766 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 815 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized | 22 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember | 26 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialPortfolioSegmentMember
Single-Family Residential[Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 334 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember | 352 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 123 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember | 126 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 173 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember | 191 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 123 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember | 126 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 180 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember |
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 125 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember | 454 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized | 7 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember | 8 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialSingleFamilyMember
Multi-Family Residential [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 1,581 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 53 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember | 1,759 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,581 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 53 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember | 1,759 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember
Impaired Financing Receivable, Allocated Loans and Leases | 1 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember | 402 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 1,631 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember | 185 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 56 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember | 1,880 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized | 13 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember | 4 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateMortgageResidentialMultiFamilyMember
Real Estate, Commercial, Non-Owner Occupied [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 577 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember | 2,022 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 2,360 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember | 2,158 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 477 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember | 1,453 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 2,360 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember | 2,158 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember
Impaired Financing Receivable, Allocated Loans and Leases | 17 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember | 46 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 502 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember | 1,895 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 2,123 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember | 2,191 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized | 134 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember | 139 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialNonOwnerOccupiedMember
Real Estate, Commercial, Owner Occupied [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 708 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember | 2,021 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 381 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember | 397 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 187 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember | 1,070 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 381 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember | 397 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember
Impaired Financing Receivable, Allocated Loans and Leases | 2 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember | 7 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 208 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember | 1,392 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 388 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember | 162 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized | 25 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember | 24 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialOwnerOccupiedMember
Real Estate, Commercial, Land Acquisition [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 349 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember | 812 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 304 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember | 767 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember
Impaired Financing Receivable, Allocated Loans and Leases | 15 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember | 138 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment |  | 423 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 327 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember | 370 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized | $ 20 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember | $ 22 us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = cfbk_RealEstateCommercialLandAcquisitionMember

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524 + Details
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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524 + Details
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