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Note 6 - Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2025
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Changes in accumulated other comprehensive income (loss) (“AOCI”) are as follows:
|  | Nine Months Ended September 30, |
|  | 2025 |  |  | 2024 |
|  | (in thousands) |
Beginning Balance |  | $ | (26,845 | ) |  | $ | (23,991 | )
Other comprehensive income before reclassification |  |  | 28,478 |  |  |  | 17,265 |
Federal income tax expense |  |  | (5,922 | ) |  |  | (3,626 | )
Other comprehensive income before reclassification, net of tax |  |  | 22,556 |  |  |  | 13,639 |
Amounts reclassified from AOCI |  |  | 249 |  |  |  | 270 |
Federal income tax expense |  |  | (52 | ) |  |  | (57 | )
Amounts reclassified from AOCI, net of tax |  |  | 197 |  |  |  | 213 |
Other comprehensive income |  |  | 22,753 |  |  |  | 13,852 |
Balance at end of period |  | $ | (4,092 | ) |  | $ | (10,139 | )

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