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Regulatory Capital Matters (Actual And Required Capital Amounts And Ratios Of CFBank) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total Capital to risk weighted assets, Actual Amount $ 37,898us-gaap_Capital $ 26,246us-gaap_Capital
Tier 1 (Core) Capital to risk weighted assets, Actual Amount 34,520us-gaap_TierOneRiskBasedCapital 23,942us-gaap_TierOneRiskBasedCapital
Tier 1 (Core) Capital to adjusted total assets, Actual Amount 34,520us-gaap_TierOneLeverageCapital 23,942us-gaap_TierOneLeverageCapital
Tangible Capital to adjusted total assets, Actual Amount 34,520us-gaap_TangibleCapital 23,492us-gaap_TangibleCapital
Total Capital to risk weighted assets, Actual Ratio 14.18%us-gaap_CapitalToRiskWeightedAssets 12.08%us-gaap_CapitalToRiskWeightedAssets
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio 12.92%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets 10.81%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
Tier 1 (Core) Capital to adjusted total assets, Actual Ratio 11.03%us-gaap_TierOneLeverageCapitalToAverageAssets 9.34%us-gaap_TierOneLeverageCapitalToAverageAssets
Tangible Capital to adjusted total assets, Actual Ratio 11.03%us-gaap_TangibleCapitalToTangibleAssets 9.34%us-gaap_TangibleCapitalToTangibleAssets
Total Capital to risk weighted assets, For Capital Adequacy Purposes Amount 21,379us-gaap_CapitalRequiredForCapitalAdequacy 17,385us-gaap_CapitalRequiredForCapitalAdequacy
Tier 1 (Core) Capital to risk weighted assets, For Capital Adequacy Purposes Amount 10,690us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy 8,693us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy
Tier 1 (Core) Capital to adjusted total assets, For Capital Adequacy Purposes Amount 12,515us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy 10,061us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy
Tangible Capital to adjusted total assets, For Capital Adequacy Purposes Amount 4,693us-gaap_TangibleCapitalRequiredForCapitalAdequacy 3,773us-gaap_TangibleCapitalRequiredForCapitalAdequacy
Total Capital to risk weighted assets, For Capital Adequacy Purposes Ratio 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
Tier 1 (Core) Capital to risk weighted assets, For Capital Adequacy Purposes Ratio 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
Tier 1 (Core) Capital to adjusted total assets, For Capital Adequacy Purposes Ratio 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
Tangible Capital to adjusted total assets, For Capital Adequacy Purposes Ratio 1.50%us-gaap_TangibleCapitalRequiredForCapitalAdequacyToTangibleAssets 1.50%us-gaap_TangibleCapitalRequiredForCapitalAdequacyToTangibleAssets
Capital Required to be Well Capitalized 26,724us-gaap_CapitalRequiredToBeWellCapitalized 21,731us-gaap_CapitalRequiredToBeWellCapitalized
Tier One Risk Based Capital Required to be Well Capitalized 16,034us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized 13,039us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized
Tier One Leverage Capital Required to be Well Capitalized 15,643us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized 12,576us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized
Capital Required to be Well Capitalized to Risk Weighted Assets 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets 6.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets 6.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
Tier One Leverage Capital Required to be Well Capitalized to Average Assets 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
CF Bank [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total Capital to risk weighted assets, Actual Amount 32,069us-gaap_Capital
/ dei_LegalEntityAxis
= cfbk_CfBankMember		 26,078us-gaap_Capital
/ dei_LegalEntityAxis
= cfbk_CfBankMember
Tier 1 (Core) Capital to adjusted total assets, Actual Amount $ 25,029us-gaap_TierOneLeverageCapital
/ dei_LegalEntityAxis
= cfbk_CfBankMember		 $ 20,121us-gaap_TierOneLeverageCapital
/ dei_LegalEntityAxis
= cfbk_CfBankMember
Total Capital to risk weighted assets, Actual Ratio 12.00%us-gaap_CapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember		 12.00%us-gaap_CapitalToRiskWeightedAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember
Tier 1 (Core) Capital to adjusted total assets, Actual Ratio 8.00%us-gaap_TierOneLeverageCapitalToAverageAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember		 8.00%us-gaap_TierOneLeverageCapitalToAverageAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember
Capital Required to be Well Capitalized to Risk Weighted Assets 12.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember		  
Tier One Leverage Capital Required to be Well Capitalized to Average Assets 8.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
/ dei_LegalEntityAxis
= cfbk_CfBankMember