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Note 3 - Investment Securities - Schedule of Investments by Contractual Maturity Date (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Due within one year, available for sale, amortized cost | $ 21 |
Due within one year, available for sale, fair value | 18 |
Due after one year through five years, available for sale, amortized cost | 1,445 |
Due after one year through five years, available for sale, fair value | 1,353 |
Due after five years through ten years, available for sale, amortized cost | 1,307 |
Due after five years through ten years, available for sale, fair value | 1,250 |
Due after ten years, available for sale, amortized cost | 1,866 |
Due after ten years, available for sale, fair value | 1,745 |
Total available for sale, available for sale, amortized cost | 4,639 | $ 5,015
Investment securities available for sale, at fair value | 4,366 | 4,746
Due within one year, held to maturity, amortized cost | 1,571 |
Due within one year, held to maturity, fair value, held to maturity, amortized cost | 1,556 |
Due after one year through five years, held to maturity, amortized cost | 0 |
Due after one year through five years, held to maturity, fair value | 0 |
Due after five years through ten years, held to maturity, amortized cost | 2,470 |
Due after five years through ten years, held to maturity, fair value | 2,061 |
Due after ten years, held to maturity, amortized cost | 4,719 |
Due after ten years, held to maturity, fair value | 3,745 |
Investment securities held to maturity, net of allowance for credit losses | 8,760 | 8,777
Investment Securities, Held to Maturity, Fair Value | $ 7,362 | $ 7,487

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