Financing Receivable, Modified in Period, Number of Loans.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Percentage of increase in percentage points added to the reference rate to compute the variable rate on contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

+ References

No definition available.

+ Details

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Namespace Prefix:	cfbk_
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Balance Type:	na
Period Type:	duration

- Definition

Period of increase in maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

+ Details

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

- Definition

Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

Name:	us-gaap_FinancingReceivableModificationToTotalFinancingReceivablesPercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-33

Reference 2: http://www.xbrl.org/2003/role/exampleRef
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-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

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

- Definition

Period of payment deferral of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (b)
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-URI https://asc.fasb.org/1943274/2147481962/310-10-50-7

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-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans And Leases (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
Loans And Leases (Narrative) (Details) $ in Thousands	Sep. 30, 2024 USD ($) loan	Sep. 30, 2023 USD ($) loan	Sep. 30, 2024 USD ($) loan	Sep. 30, 2023 USD ($) loan	Dec. 31, 2023 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Loans 90 days or more past due and still accruing interest \| $	$ 0		$ 0		$ 0
Commercial Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of loans modified to borrowers experiencing financial difficulty \| loan	0
Commercial Portfolio Segment [Member] \| Extended Maturity and Interest Rate Increase [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of loans modified to borrowers experiencing financial difficulty \| loan			1
Loan modifications to borrowers experiencing financial difficulty, amount \| $			$ 4,300
Percentage of financing receivable modified during period			1.00%
Increase in interest rate for loan modification			0.75%
Modification maturity date extension			6 months
Commercial Portfolio Segment [Member] \| Defer Principal and Interest [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of loans modified to borrowers experiencing financial difficulty \| loan		1		1
Loan modifications to borrowers experiencing financial difficulty, amount \| $		$ 2,900		$ 2,900
Percentage of financing receivable modified during period				0.70%
Modification payment deferral periopd		1 year		1 year