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Regulatory Capital Matters - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2012 | Jun. 30, 2012 | Dec. 31, 2011 | Sep. 30, 2011
Regulatory Authorities [Line Items] |  |  |  |
Tier 1 (Core) Capital to adjusted total assets as required by CF Bank Orders | 8.00% | 8.00% |  | 8.00%
Total Capital to risk weighted assets as required by CF Bank Orders |  | 12.00% |  | 12.00%
Capital contribution from Holding Company | $ 13,500 |  |  |
Percent of Qualified Thrift Lender test requires | 65.00% |  |  |
Opening Balance in Liquidation Account | $ 14,300 |  |  |

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- Definition Capital required by terms of CF bank order to risk weighted assets. + References No definition available. + Details
Name: | cfbk_CapitalRequiredByTermsOfCfBankOrderToRiskWeightedAssets
Namespace Prefix: | cfbk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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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
Name: | cfbk_MinimumPercentageOfAssetsToBeMaintainedInHousingRelatedFinanceAndOtherSpecifiedAreasAsPerQualifiedThriftLenderTest
Namespace Prefix: | cfbk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Opening balance in liquidation account. + References No definition available. + Details
Name: | cfbk_OpeningBalanceInLiquidationAccount
Namespace Prefix: | cfbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Payments For Investments In Banking Subsidiary + References No definition available. + Details
Name: | cfbk_PaymentsForInvestmentsInBankingSubsidiary
Namespace Prefix: | cfbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | cfbk_RegulatoryAuthoritiesLineItems
Namespace Prefix: | cfbk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Tier one leverage capital required by terms of CF bank order to average assets. + References No definition available. + Details
Name: | cfbk_TierOneLeverageCapitalRequiredByTermsOfCfBankOrderToAverageAssets
Namespace Prefix: | cfbk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant