Amortized cost of impaired loans servicing right.

No definition available.

Name:	cfbk_AmortizedCostOfImpairedLoansServicingRight
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Charge against earnings of foreclosed assets.

+ References

No definition available.

+ Details

Name:	cfbk_ChargeAgainstEarningsOfForeclosedAssets
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	cfbk_FairValueAdditionalTextualAbstract
Namespace Prefix:	cfbk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	cfbk_FairValueTextualAbstract
Namespace Prefix:	cfbk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Foreclosed assets outstanding balance.

+ References

No definition available.

+ Details

Name:	cfbk_ForeclosedAssetsOutstandingBalance
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Impaired financing receivable fair value disclosure.

+ References

No definition available.

+ Details

Name:	cfbk_ImpairedFinancingReceivableFairValueDisclosure
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Impairment loan servicing rights.

+ References

No definition available.

+ Details

Name:	cfbk_ImpairmentLoanServicingRights
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Increase in earnings with respect to servicing rights.

+ References

No definition available.

+ Details

Name:	cfbk_IncreaseInEarningsWithRespectToServicingRights
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase in valuation allowances of impairment loan.

+ References

No definition available.

+ Details

Name:	cfbk_IncreaseInValuationAllowancesOfImpairmentLoan
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Mortgage servicing rights (MSR) valuation allowances.

+ References

No definition available.

+ Details

Name:	cfbk_MortgageServicingRightsMsrValuationAllowances
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Period of loan due.

+ References

No definition available.

+ Details

Name:	cfbk_PeriodOfLoanDue
Namespace Prefix:	cfbk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Unpaid principal balance of impaired loans carried at fair value of collateral.

+ References

No definition available.

+ Details

Name:	cfbk_UnpaidPrincipalBalanceOfImpairedLoansCarriedAtFairValueOfCollateral
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Valuation allowance on foreclosed assets, net.

+ References

No definition available.

+ Details

Name:	cfbk_ValuationAllowanceOnForeclosedAssetsNet
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of accrued expenses as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_AccruedLiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4437-111522

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 2, 9, 10, 11

-IssueDate 2006-05-01

-Chapter 11

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_ForeclosedAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Fair Value (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Fair Value (Textual) [Abstract]
Charge-offs amount of loans	$ 401		$ 1,266
Charge against earnings of foreclosed assets			182	1,139
Fair Value (Additional Textual) [Abstract]
Impairment loan servicing rights	1		1		9
Amortized cost	2		2		11
Valuation allowances	1		1		2
Increase in earnings with respect to servicing rights	1	1	1	3
Unpaid principal balance of impairment loan	8,628	10,503	8,628	10,503
Impairment loans			6,528
Unpaid principal balance of impairment loan at collateral					10,069
Fair value of impairment loan at collateral	13,094	15,393	13,094	15,393	6,809
Reduction in valuation allowances of impairment loan		1,593		1,558
Foreclosed assets, net	2,345		2,345		2,370
Outstanding amount of foreclosed assets	3,381		3,381		2,348
Period of loan due			90 days
Level 1 [Member] \| Recurring [Member]
Fair Value (Textual) [Abstract]
Assets	0		0		0
Liabilities	0		0		0
Level 1 [Member] \| Non-recurring [Member]
Fair Value (Textual) [Abstract]
Assets	0		0		0
Liabilities	0		0		0
Level 3 [Member]
Fair Value (Additional Textual) [Abstract]
Foreclosed assets, net	2,242		2,242		1,209
Level 3 [Member] \| Recurring [Member]
Fair Value (Textual) [Abstract]
Assets	0		0		0
Liabilities	0		0		0
Level 3 [Member] \| Non-recurring [Member]
Fair Value (Additional Textual) [Abstract]
Fair value of impairment loan at collateral	6,528		6,528		6,809
Foreclosed assets, net	2,242		2,242		1,209
Foreclosed assets [Member]
Fair Value (Textual) [Abstract]
Valuation allowance on foreclosed assets	1,139		1,139		1,139
Charge against earnings of foreclosed assets	$ 182	$ 1,139