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v3.26.1

Note 3 - Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2026
Notes Tables |
Investments in Debt And Equity Instruments, Available-for-Sale and Held to Maturity, Summary [Table Text Block] |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  |  |  |
As of March 31, 2026 |  | cost |  |  | gains |  |  | losses |  |  | Fair value |
|  | (Dollars in thousands) |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed securities |  | $ | 4,139 |  |  | $ | 8 |  |  | $ | 286 |  |  | $ | 3,861 |
Corporate debt obligations |  |  | 500 |  |  |  | 5 |  |  |  | — |  |  |  | 505 |
Total available for sale |  | $ | 4,639 |  |  | $ | 13 |  |  | $ | 286 |  |  | $ | 4,366 |
Held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed securities |  | $ | 4,719 |  |  | $ | — |  |  | $ | 974 |  |  | $ | 3,745 |
States and political subdivisions |  |  | 4,041 |  |  |  | — |  |  |  | 424 |  |  |  | 3,617 |
Total held to maturity |  | $ | 8,760 |  |  | $ | — |  |  | $ | 1,398 |  |  | $ | 7,362 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  |  |  |
As of December 31, 2025 |  | cost |  |  | gains |  |  | losses |  |  | Fair value |
|  | (Dollars in thousands) |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed securities |  | $ | 4,515 |  |  | $ | 10 |  |  | $ | 279 |  |  | $ | 4,246 |
Corporate debt obligations |  |  | 500 |  |  |  | — |  |  |  | — |  |  |  | 500 |
Total available for sale |  | $ | 5,015 |  |  | $ | 10 |  |  | $ | 279 |  |  | $ | 4,746 |
Held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed securities |  | $ | 4,753 |  |  | $ | — |  |  | $ | 945 |  |  | $ | 3,808 |
States and political subdivisions |  |  | 4,024 |  |  |  | — |  |  |  | 345 |  |  |  | 3,679 |
Total held to maturity |  | $ | 8,777 |  |  | $ | — |  |  | $ | 1,290 |  |  | $ | 7,487 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized |  |  | Fair |
|  | Cost |  |  | Value |
|  | (Dollars in thousands) |
Available for sale: |  |  |  |  |  |  |  |
Due within one year |  | $ | 21 |  |  | $ | 18 |
Due after one year through five years |  |  | 1,445 |  |  |  | 1,353 |
Due after five years through ten years |  |  | 1,307 |  |  |  | 1,250 |
Due after ten years |  |  | 1,866 |  |  |  | 1,745 |
Total available for sale |  | $ | 4,639 |  |  | $ | 4,366 |
Held to maturity: |  |  |  |  |  |  |  |
Due within one year |  | $ | 1,571 |  |  | $ | 1,556 |
Due after one year through five years |  |  | — |  |  |  | — |
Due after five years through ten years |  |  | 2,470 |  |  |  | 2,061 |
Due after ten years |  |  | 4,719 |  |  |  | 3,745 |
Total held to maturity |  | $ | 8,760 |  |  | $ | 7,362 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
As of March 31, 2026 |  | Less Than 12 Months |  |  | 12 Months or Greater |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
Description of Securities |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
|  | (Dollars in thousand) |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed securities |  | $ | 5 |  |  | $ | — |  |  | $ | 3,519 |  |  | $ | 286 |  |  | $ | 3,524 |  |  | $ | 286 |
Total available for sale |  | $ | 5 |  |  | $ | — |  |  | $ | 3,519 |  |  | $ | 286 |  |  | $ | 3,524 |  |  | $ | 286 |
As of December 31, 2025 |  | Less Than 12 Months |  |  | 12 Months or Greater |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
Description of Securities |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
|  | (Dollars in thousands) |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed securities |  | $ | 46 |  |  | $ | — |  |  | $ | 3,816 |  |  | $ | 279 |  |  | $ | 3,862 |  |  | $ | 279 |
Total available for sale |  | $ | 46 |  |  | $ | — |  |  | $ | 3,816 |  |  | $ | 279 |  |  | $ | 3,862 |  |  | $ | 279 |

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