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Benefit Plans (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2019 | 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 | $ 13 |  | $ (16) |  | $ (12) |  |  |
Accrued interest payable and other liabilities Total | 141 |  | 154 |  |  |  |  |
401 (k) plan [Member] |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |
Total contributions | $ 343 |  | 293 |  | 188 |  |  |
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 | $ 7 |  | 7 |  | $ 8 |  |  |
Accrued interest payable and other liabilities Total | 134 |  | $ 152 |  |  |  |  |
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) |  | $ 104 |  |  |  |
CFBank's contributions |  | $ 22 |  | 29 |  | $ 59 |  |
Funded status |  |  |  |  |  |  | 100.81% | 90.19%
Total contributions |  |  |  | $ 253,199 |  | $ 138,322 |  |
Percentage of amount allowable under federal tax regulations |  |  |  | 5.00% |  | 5.00% |  |

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