XML 107 R112.htm IDEA: XBRL DOCUMENT v3.20.1

Loan Commitments And Other Related Activities (Contractual Amounts Of Financial Instruments With Off-Balance-Sheet Risk) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Commitments to make loans [Member]
Other Contingencies And Commitments [Line Items]
Fixed Rate	$ 314,705	$ 80,528
Variable Rate	43,979	36,542
Unused lines of credit [Member]
Other Contingencies And Commitments [Line Items]
Fixed Rate	10,678	6,218
Variable Rate	55,684	50,355
Standby letters of credit [Member]
Other Contingencies And Commitments [Line Items]
Fixed Rate	$ 1,415	$ 946

X

- Definition

Contractual Amount Of Financial Instruments With Off Balance Sheet Risk At Fixed Rate

+ References

No definition available.

+ Details

Name:	cfbk_ContractualAmountOfFinancialInstrumentsWithOffBalanceSheetRiskAtFixedRate
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Contractual Amount Of Financial Instruments With Off Balance Sheet Risk At Variable Rate

+ References

No definition available.

+ Details

Name:	cfbk_ContractualAmountOfFinancialInstrumentsWithOffBalanceSheetRiskAtVariableRate
Namespace Prefix:	cfbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Other Contingencies And Commitments [Line Items]

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_LoanOriginationCommitmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_UnusedLinesOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: