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Note 1 - Summary of Significant Accounting Policies (Details Textual) | Dec. 01, 2022 USD ($) shares | Dec. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022
--- | --- | --- | --- | --- | ---
Servicing Asset at Fair Value, Amount |  | $ 197,400,000 |  | $ 210,300,000 |
Mortgage Loans in Process of Foreclosure, Amount |  | $ 352,000 |  | $ 228,000 |
Core Deposits [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  | 10 years |  | 10 years |
Minimum [Member] | Furniture and Fixtures [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 3 years |  |  |
Minimum [Member] | Building and Building Improvements [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 3 years |  |  |
Maximum [Member] | Furniture and Fixtures [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 20 years |  |  |
Maximum [Member] | Building and Building Improvements [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 40 years |  |  |
Commercial Portfolio Segment [Member] | Minimum [Member] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process |  | $ 250,000 | $ 150,000 |  |
LBSI Insurance, LLC [Member] |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  | 100.00%
Liberty Bancshares Inc [Member] |  |  |  |  |
Business Combination, Amount Shares Issued to Acquiree's Shareholders Per Share (in shares) | shares | 2.752 |  |  |  |
Stock Issued During Period, Shares, Acquisitions (in shares) | shares | 2,561,513 |  |  |  |
Business Combination, Consideration Transferred, Total | $ 73,300,000 |  |  |  |
Number of Branches | 6 |  |  |  |

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