Benefit Plans (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2022	Jul. 01, 2021	Jul. 01, 2020
Life Insurance Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit plan expense	$ (3)	$ 13		$ (16)
Accrued interest payable and other liabilities Total	139	141
Deferred Cash Incentive Agreements [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit plan expense	262	118		0
Accrued interest payable and other liabilities Total	380	118
401 (k) plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total contributions	$ 301	343		293
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	$ 6	7		$ 7
Accrued interest payable and other liabilities Total	115	$ 134
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			$ (8)				$ 102
CFBank's contributions			$ 19		$ 22	$ 29
Funded status								90.10%	100.81%
Total contributions					$ 248,563	$ 253,199
Percentage of amount allowable under federal tax regulations					5.00%	5.00%