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Note 1 - Summary of Significant Accounting Policies - Summary of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Accumulated other comprehensive gain/(loss) | $ (50,487) | $ (65,341) | $ (3,729)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |
Unrealized gains (losses) on securities available for sale | (63,906) | (82,710) | (4,720)
Tax effect | $ 13,419 | $ 17,369 | $ 991

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