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Note 5 - Land, Premises and Equipment, Net (Details Textual) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Depreciation | $ 1.1 | $ 0.7 | $ 2.2 | $ 1.3
Other Assets [Member] |  |  |  |
Disposal Group, Including Discontinued Operation, Assets | 0.4 |  | 0.4 |
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Purchase Agreement to Sell Branch in West Fargo, North Dakota [Member] |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration | 3.8 |  | 3.8 |
Disposal Group, Including Discontinued Operation, Assets | $ 0.4 |  | $ 0.4 |

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