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Regulatory Order Considerations (Narrative) (Details) (USD $)
0 Months Ended 12 Months Ended 3 Months Ended
Aug. 20, 2012
Dec. 31, 2014
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Regulatory Order Considarations [Line Items]              
Tier One Leverage Capital Required to be Well Capitalized to Average Assets   5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets   5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets    
Capital Required to be Well Capitalized to Risk Weighted Assets   10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets   10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets    
Brokered Deposits   $ 29,308,000cfbk_BrokeredDeposits     $ 29,308,000cfbk_BrokeredDeposits    
Unpledged securities and deposits in other financial institutions   28,309,000cfbk_UnpledgedSecuritiesAndDepositsInOtherFinancialInstitutions     28,309,000cfbk_UnpledgedSecuritiesAndDepositsInOtherFinancialInstitutions    
Improvement of capital ratio payment   13,500,000cfbk_ImprovementOfCapitalRatio          
Sales of common stock   15,935,417us-gaap_CommonStockSharesIssued 15,000,000us-gaap_CommonStockSharesIssued 15,935,417us-gaap_CommonStockSharesIssued 15,935,417us-gaap_CommonStockSharesIssued    
Share Price     $ 1.50us-gaap_SharePrice        
Proceeds from sale of common stock 22,500,000us-gaap_ProceedsFromIssuanceOfCommonStock   20,221,000us-gaap_ProceedsFromIssuanceOfCommonStock        
Preferred stock dividend amount   421,000us-gaap_DividendsPreferredStockCash 289,000us-gaap_DividendsPreferredStockCash        
CF Bank [Member]              
Regulatory Order Considarations [Line Items]              
Tier One Leverage Capital Required to be Well Capitalized to Average Assets   8.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember
    8.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember
   
Capital Required to be Well Capitalized to Risk Weighted Assets   12.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember
    12.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember
   
Capital contribution       1,500,000cfbk_PaymentsForInvestmentsInBankingSubsidiary
/ dei_LegalEntityAxis
= cfbk_CfBankMember
     
Series B Preferred Stock [Member]              
Regulatory Order Considarations [Line Items]              
Preferred stock dividend amount         $ 187,500us-gaap_DividendsPreferredStockCash
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
$ 174,600us-gaap_DividendsPreferredStockCash
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
$ 58,600us-gaap_DividendsPreferredStockCash
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember