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Note 5 - Investment Securities - Schedule of Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Due within one year or less, Held-to-maturity, Amortized Cost | $ 6,801 |
Due within one year or less, Held-to-maturity, Fair Value | 6,730 |
Due within one year or less, Available-for-sale, Amortized Cost | 14,976 |
Due within one year or less, Available-for-sale, Fair Value | 14,980 |
Due after one year through five years, Held-to-maturity, Amortized Cost | 54,832 |
Due after one year through five years, Held-to-maturity, Fair Value | 50,924 |
Due after one year through five years, Available-for-sale, Amortized Cost | 16,710 |
Due after one year through five years, Available-for-sale, Fair Value | 16,622 |
Due after five years through ten years, Held-to-maturity, Amortized Cost | 48,016 |
Due after five years through ten years, Held-to-maturity, Fair Value | 41,694 |
Due after five years through ten years, Available-for-sale, Amortized Cost | 57,990 |
Due after five years through ten years, Available-for-sale, Fair Value | 52,374 |
Due after 10 years, Held-to-maturity, Amortized Cost | 9,974 |
Due after 10 years, Held-to-maturity, Fair Value | 8,637 |
Due after 10 years, Available-for-sale, Amortized Cost | 370 |
Due after 10 years, Available-for-sale, Fair Value | 371 |
Held-to-maturity, Amortized Cost | 119,623 |
Held-to-maturity, Fair Value | 107,985 |
Available-for-sale, Amortized Cost | 90,046 |
Available-for-sale, Fair Value | 84,347 |
Total investment securities | 275,716 |
Total investment securities, Held-to-maturity, Fair Value | 236,986 | $ 258,617
Total investment securities, Available-for-sale, Amortized Cost | 686,556 | 584,754
Total investment securities, Available-for-sale, Fair Value | 588,053 | 486,736
Residential Mortgage-Backed Securities [Member] |  |
Residential agency, Held-to-maturity, Amortized Cost | 156,093 |
Residential agency, Held-to-maturity, Fair Value | 129,001 |
Residential agency, Available-for-sale, Amortized Cost | 596,510 |
Residential agency, Available-for-sale, Fair Value | 503,706 |
Total investment securities, Held-to-maturity, Fair Value | 129,001 | 141,627
Total investment securities, Available-for-sale, Fair Value | $ 503,706 | $ 435,594

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