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Note 12 - Fair Value - Assets Measured on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] - Collateral Dependent Loans [Member] - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Collateral dependent loans | $ 1,402 | $ 8,673
Fair Value, Inputs, Level 1 [Member] |  |
Collateral dependent loans | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Collateral dependent loans | 0 | 0
Fair Value, Inputs, Level 3 [Member] |  |
Collateral dependent loans | $ 1,402 | $ 8,673

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