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Benefit Plans (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended						15 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Sep. 30, 2022	Jul. 01, 2023	Jul. 01, 2022
Life Insurance Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit plan expense				$ 12	$ 3	$ 13
Accrued interest payable and other liabilities Total				126	139
Deferred Cash Incentive Agreements [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit plan expense				129	262	118
Accrued interest payable and other liabilities Total				509	380
401 (k) plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total contributions				$ 92	301	343
Percentage of amount allowable under federal tax regulations				50.00%
Percentage of compensation contributed under federal tax regulations				8.00%
Salary Continuation Agreement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit plan expense				$ 5	6	$ 7
Accrued interest payable and other liabilities Total				95	$ 115
Annual benefit for 20 years				$ 25
Duration of Annual benefit				20 years
Multi-Employer Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funding (surplus) shortfall	$ 180	$ (102)
CFBank's contributions	$ 24	$ 19	$ 22
Funded status											81.12%	90.10%
Total contributions							$ 248,563			$ 142,405
Percentage of amount allowable under federal tax regulations								5.00%	5.00%

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- Definition

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- Definition

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- Definition

Percentage of plan assets to benefit obligation of defined benefit plan.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

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- Definition

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- Definition

Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
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-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480547/715-80-55-8

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- Definition

Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
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