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Note 1 - Summary of Significant Accounting Policies (Details Textual) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Mar. 07, 2022
Number of Operating Segments |  |  | 2 |  |  |
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss | $ 2,000,000 |  | $ 2,000,000 |  | $ 0 |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Ending Balance | 0 |  | $ 0 |  | 0 |
Mortgage Servicing Rights, Amortization Period (Year) |  |  | 7 years |  |  |
Goodwill, Impairment Loss | 0 | $ 0 | $ 0 | $ 0 | $ 0 |
Cash Reserve Deposit Required and Made | $ 200,000 |  | $ 200,000 |  |  |
Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 3 years |  |  |
Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 40 years |  |  |
Commonwealth [Member] |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  | 100.00%
Landmark Financial Advisors, LLC (LFA) [Member] |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  | 60.00%

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