Note 7 - Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income - Reclassified From Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Reclassification adjustment for net gains included in operation having no credit losses, before tax | [1] | $ 41,835 | $ (73,291) | $ 47,357 | $ 152,789 | |||
| Reclassification adjustment for net gains included in operation having no credit losses, tax | [2] | 8,786 | (15,391) | 9,945 | 32,086 | |||
| Reclassification adjustment for net gains included in operation having no credit losses, net of tax | $ 33,049 | $ (57,900) | $ 37,412 | $ 120,703 | ||||
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