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Note 16 - Components of Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Details) (Parentheticals) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Net pension gain arising during the period, net of taxes | $ 255 | $ 701
AOCI Attributable to Parent [Member] |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Unrealized holding gain on available for sale securities, tax | $ 5,617 | $ 124

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