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Foreclosed Assets (Expenses Related To Foreclosed Assets) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Disclosure Foreclosed Assets Expenses Related To Foreclosed Assets [Abstract] |  |  |
Net loss (gain) on sales | $ (28) | $ (338) | $ (7)
Provision for unrealized losses |  | 962 | 1,139
Operating expenses, net of rental income | 73 | 28 | 55
Foreclosed assets, net | $ 45 | $ 652 | $ 1,187

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- Definition Additions charged to expense in valuation allowance. + References No definition available. + Details
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Namespace Prefix: | cfbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Definition Foreclosed Real Estate operating expense net of rental income. + References No definition available. + Details
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Namespace Prefix: | cfbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Net Gain Loss On Sale Of Foreclosed Assets + References No definition available. + Details
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Namespace Prefix: | cfbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Amount of expense recognized during the period for the foreclosure on real estate assets. + References No definition available. + Details
Name: | us-gaap_ForeclosedRealEstateExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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