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Note 7 - Accumulated Other Comprehensive Loss (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Unrealized gain |  |  |  |  |  |  |  |  |  |  |  |  |
|  | and losses on |  |  |  |  |  |  |  |  |  |  |  |  |
|  | available for |  |  |  |  |  |  |  |  |  |  |  |  |
|  | sale securities |  |  | Benefit plans |  |  | Derivatives |  |  | Total |
Three months ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | (3,598,212 | ) |  | $ | 69,388 |  |  | $ | (14,106 | ) |  | $ | (3,542,930 | )
Other comprehensive (loss) income before reclassification |  |  | 1,737,976 |  |  |  | — |  |  |  | (120,835 | ) |  |  | 1,617,141 |
Amounts reclassified |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net period comprehensive (loss) income |  |  | 1,737,976 |  |  |  | — |  |  |  | (120,835 | ) |  |  | 1,617,141 |
Ending balance |  | $ | (1,860,236 | ) |  | $ | 69,388 |  |  | $ | (134,941 | ) |  | $ | (1,925,789 | )
September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | (6,676,939 | ) |  | $ | 5,654 |  |  | $ | 689,446 |  |  | $ | (5,981,839 | )
Other comprehensive income before reclassification |  |  | 2,070,862 |  |  |  | — |  |  |  | (936,818 | ) |  |  | 1,134,044 |
Amounts reclassified |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net period comprehensive income |  |  | 2,070,862 |  |  |  | — |  |  |  | (936,818 | ) |  |  | 1,134,044 |
Ending balance |  | $ | (4,606,077 | ) |  | $ | 5,654 |  |  | $ | (247,372 | ) |  | $ | (4,847,795 | )
|  | Unrealized gain and losses on available for sale securities |  |  | Benefit plans |  |  | Derivatives |  |  | Total |
Nine Months Ended September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | (4,005,169 | ) |  | $ | (60,526 | ) |  | $ | 468,247 |  |  | $ | (3,597,448 | )
Other comprehensive income (loss) before reclassification |  |  | 2,144,933 |  |  |  | — |  |  |  | (603,188 | ) |  |  | 1,541,745 |
Amounts reclassified |  |  | — |  |  |  | 129,914 |  |  |  | — |  |  |  | 129,914 |
Net period comprehensive income (loss) |  |  | 2,144,933 |  |  |  | 129,914 |  |  |  | (603,188 | ) |  |  | 1,671,659 |
Ending balance |  | $ | (1,860,236 | ) |  | $ | 69,388 |  |  | $ | (134,941 | ) |  | $ | (1,925,789 | )
Nine Months Ended September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | (6,639,506 | ) |  | $ | 2,549 |  |  | $ | 172,183 |  |  | $ | (6,464,774 | )
Other comprehensive (loss) income before reclassification |  |  | 2,033,429 |  |  |  | — |  |  |  | (419,555 | ) |  |  | 1,613,874 |
Amounts reclassified |  |  | — |  |  |  | 3,105 |  |  |  | — |  |  |  | 3,105 |
Net period comprehensive (loss) income |  |  | 2,033,429 |  |  |  | 3,105 |  |  |  | (419,555 | ) |  |  | 1,616,979 |
Ending balance |  | $ | (4,606,077 | ) |  | $ | 5,654 |  |  | $ | (247,372 | ) |  | $ | (4,847,795 | )

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