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Note 3 - Debt Securities - Debt Securities Available-for-sale (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Due in one year or less, Amortized cost | $ 105,290 |
Due in one year or less, Estimated fair value | 103,737 |
Due after one year through five years, Amortized cost | 374,000 |
Due after one year through five years, Estimated fair value | 350,187 |
Due after five years through ten years, Amortized cost | 109,174 |
Due after five years through ten years, Estimated fair value | 96,627 |
Due after ten years, Amortized cost | 8,100 |
Due after ten years, Estimated fair value | 6,912 |
Securities, amortized cost | 596,564 |
Securities, fair value | 557,463 |
U.S. government mortgage-backed securities, amortized cost | 103,964 |
U.S. government mortgage-backed securities, fair value | 91,050 |
Total, amortized cost | 700,528 | $ 798,703
Total, Estimated fair value | $ 648,513 | $ 736,389

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