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Foreclosed Assets (Narrative) (Details)	12 Months Ended
	Dec. 31, 2013 property	Dec. 31, 2012 property
Multi Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of Properties	1	1
Number of Properties transferred into REO	1
Single-family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of Properties		1

X

- Definition

Number of properties.

+ References

No definition available.

+ Details

Name:	cfbk_NumberOfProperties
Namespace Prefix:	cfbk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number Of Properties Transferred Into Real Estate Owned

+ References

No definition available.

+ Details

Name:	cfbk_NumberOfPropertiesTransferredIntoRealEstateOwned
Namespace Prefix:	cfbk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration