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Note 5 - Purchased Credit Deteriorated Loans - Outstanding Balance and Carrying Amount for Credit Deteriorating Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Outstanding balance | $ 1,707,193 | $ 1,712,946 |
Carrying amount | 1,719,060 | $ 1,723,471 | $ 1,401,278
Eagle Financial Bancorp, Inc. [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Outstanding balance | 3,185 |  |
Carrying amount | $ 2,934 |  |

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