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Securities (Fair Value Of Securities Pledged) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Pledged as collateral for:
FHLB advances	$ 2,024	$ 3,074
Public deposits	3,074	2,015
Mortgage banking derivatives	3,029	1,500
Interest-rate swaps	60	77
Total	$ 8,187	$ 6,666

X

- Definition

Pledged assets separately reported securities pledged for interest rate swaps at fair value

+ References

No definition available.

+ Details

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Namespace Prefix:	cfbk_
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Balance Type:	debit
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X

- Definition

Pledged assets separately reported securities pledged for public deposits, at fair value.

+ References

No definition available.

+ Details

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Namespace Prefix:	cfbk_
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X

- Definition

The fair value, as of the date of each statement of financial position presented, of real estate which is owned but transferred to serve as collateral for the payment of the related debt obligation, and that is reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge it.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728

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X

- Definition

The sum of the fair values, as of the date of each statement of financial position presented, of securities that are restricted as collateral for the payment of related debt obligations, primarily secured borrowings and repurchase agreements, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

X

- References

No definition available.

+ Details

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X

- Definition

The fair value, as of the date of each statement of financial position presented, of securities which are owned but transferred to serve as collateral for the payment of the FHLB debt obligations, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728

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