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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 |  | $ 29,308,000 cfbk_BrokeredDeposits |  |  | $ 29,308,000 cfbk_BrokeredDeposits |  |
Unpledged securities and deposits in other financial institutions |  | 28,309,000 cfbk_UnpledgedSecuritiesAndDepositsInOtherFinancialInstitutions |  |  | 28,309,000 cfbk_UnpledgedSecuritiesAndDepositsInOtherFinancialInstitutions |  |
Improvement of capital ratio payment |  | 13,500,000 cfbk_ImprovementOfCapitalRatio |  |  |  |  |
Sales of common stock |  | 15,935,417 us-gaap_CommonStockSharesIssued | 15,000,000 us-gaap_CommonStockSharesIssued | 15,935,417 us-gaap_CommonStockSharesIssued | 15,935,417 us-gaap_CommonStockSharesIssued |  |
Share Price |  |  | $ 1.50 us-gaap_SharePrice |  |  |  |
Proceeds from sale of common stock | 22,500,000 us-gaap_ProceedsFromIssuanceOfCommonStock |  | 20,221,000 us-gaap_ProceedsFromIssuanceOfCommonStock |  |  |  |
Preferred stock dividend amount |  | 421,000 us-gaap_DividendsPreferredStockCash | 289,000 us-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 |  |  |  | 1,500,000 cfbk_PaymentsForInvestmentsInBankingSubsidiary / dei_LegalEntityAxis = cfbk_CfBankMember |  |  |
Series B Preferred Stock [Member] |  |  |  |  |  |  |
Regulatory Order Considarations [Line Items] |  |  |  |  |  |  |
Preferred stock dividend amount |  |  |  |  | $ 187,500 us-gaap_DividendsPreferredStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember | $ 174,600 us-gaap_DividendsPreferredStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember | $ 58,600 us-gaap_DividendsPreferredStockCash / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember

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- Definition The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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