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Loans - Schedule of Debtor Troubled Debt Restructuring, Subsequent Periods (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Financing Receivable, Modifications [Line Items] |  |
Nonaccrual Troubled Debt Restructurings, Total | $ 3,286 | $ 3,020
Commercial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Nonaccrual Troubled Debt Restructurings, Total | 528 | 47
Multi-family residential [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Nonaccrual Troubled Debt Restructurings, Total | 2,082 | 2,527
Non-owner occupied [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Nonaccrual Troubled Debt Restructurings, Total | 388 |
Owner occupied [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Nonaccrual Troubled Debt Restructurings, Total | $ 288 | $ 446

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- Definition Financing Receivable Recorded Investment Nonaccrual Trouble Debt Restructured + References No definition available. + Details
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Namespace Prefix: | cfbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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