Note 5 - Debt Securities (Tables)
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6 Months Ended |
Jun. 30, 2025 |
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| Notes Tables |
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| Debt Securities, Available-for-Sale [Table Text Block] |
| | | Amortized | | | Gross | | | Gross | | | Allowance | | | | | |
| | | Cost | | | Unrealized | | | Unrealized | | | for Credit | | | Fair | |
| (In thousands) | | Basis | | | Gains | | | Losses | | | Losses | | | Value | |
| June 30, 2025 | | | | | | | | | | | | | | | | | | | | |
| State and municipal securities | | $ | 11,081 | | | $ | 2 | | | $ | 913 | | | $ | — | | | $ | 10,170 | |
| Asset-backed securities | | | 7,560 | | | | 13 | | | | 560 | | | | — | | | | 7,013 | |
| Government mortgage-backed securities | | | 7,931 | | | | — | | | | 580 | | | | — | | | | 7,351 | |
| Total debt securities available-for-sale | | $ | 26,572 | | | $ | 15 | | | $ | 2,053 | | | $ | — | | | $ | 24,534 | |
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| December 31, 2024 | | | | | | | | | | | | | | | | | | | | |
| State and municipal securities | | $ | 11,130 | | | $ | 2 | | | $ | 581 | | | $ | — | | | $ | 10,551 | |
| Asset-backed securities | | | 7,961 | | | | — | | | | 745 | | | | — | | | | 7,216 | |
| Government mortgage-backed securities | | | 8,707 | | | | — | | | | 781 | | | | — | | | | 7,926 | |
| Total debt securities available-for-sale | | $ | 27,798 | | | $ | 2 | | | $ | 2,107 | | | $ | — | | | $ | 25,693 | |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
| | | Available-for-Sale | |
| | | Amortized | | | Fair | |
| (In thousands) | | Cost | | | Value | |
| Due in one year | | $ | — | | | $ | — | |
| Due after one year through five years | | | 599 | | | | 601 | |
| Due after five years through ten years | | | 2,580 | | | | 2,515 | |
| Due after ten years | | | 7,902 | | | | 7,054 | |
| Government mortgage-backed securities | | | 7,931 | | | | 7,351 | |
| Asset-backed securities | | | 7,560 | | | | 7,013 | |
| | | $ | 26,572 | | | $ | 24,534 | |
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| Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
| | | Less than 12 Months | | | 12 Months or Longer | | | Total | |
| | | Fair | | | Unrealized | | | Fair | | | Unrealized | | | Fair | | | Unrealized | |
| (In thousands) | | Value | | | Losses | | | Value | | | Losses | | | Value | | | Losses | |
| June 30, 2025 | | | | | | | | | | | | | | | | | | | | | | | | |
| Temporarily impaired securities: | | | | | | | | | | | | | | | | | | | | | | | | |
| State and municipal securities | | $ | 2,892 | | | $ | 57 | | | $ | 6,677 | | | $ | 856 | | | $ | 9,569 | | | $ | 913 | |
| Asset-backed securities | | | — | | | | — | | | | 5,368 | | | | 560 | | | | 5,368 | | | | 560 | |
| Government mortgage-backed securities | | | 72 | | | | 1 | | | | 7,279 | | | | 579 | | | | 7,351 | | | | 580 | |
| Total temporarily impaired debt securities | | $ | 2,964 | | | $ | 58 | | | $ | 19,324 | | | $ | 1,995 | | | $ | 22,288 | | | $ | 2,053 | |
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| December 31, 2024 | | | | | | | | | | | | | | | | | | | | | | | | |
| Temporarily impaired securities: | | | | | | | | | | | | | | | | | | | | | | | | |
| State and municipal | | $ | 2,935 | | | $ | 21 | | | $ | 7,015 | | | $ | 560 | | | $ | 9,950 | | | $ | 581 | |
| Asset-backed securities | | | 1,752 | | | | 11 | | | | 5,463 | | | | 734 | | | | 7,215 | | | | 745 | |
| Government mortgage-backed securities | | | — | | | | — | | | | 7,848 | | | | 781 | | | | 7,848 | | | | 781 | |
| Total temporarily impaired debt securities | | $ | 4,687 | | | $ | 32 | | | $ | 20,326 | | | $ | 2,075 | | | $ | 25,013 | | | $ | 2,107 | |
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