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Regulatory Capital Matters (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended |  |
--- | --- | --- | ---
Apr. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Tier One Leverage Capital Required to be Well Capitalized to Average Assets |  | 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
Percent of Qualified Thrift Lender test requires |  | 65.00%cfbk_MinimumPercentageOfAssetsToBeMaintainedInHousingRelatedFinanceAndOtherSpecifiedAreasAsPerQualifiedThriftLenderTest |
Opening Balance in Liquidation Account |  | $ 14,300 cfbk_OpeningBalanceInLiquidationAccount |
Preferred Class B [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Dividends paid | $ 187 us-gaap_DividendsPreferredStockPaidinkind / us-gaap_StatementClassOfStockAxis = us-gaap_PreferredClassBMember |  |
CF Bank [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [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

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- Definition Minimum percentage of assets to be maintained in housing-related finance and other specified areas as per qualified thrift lender test. + References No definition available. + Details
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- Definition Opening balance in liquidation account. + References No definition available. + Details
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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 Amount of paid and unpaid preferred stock dividends declared with the form of settlement in payment-in-kind (PIK). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + 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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