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Note 12 - Other Income, Net (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Schedule of Other Nonoperating Income (Expense) [Table Text Block] |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2025 |  | 2024 |  | 2025 |  | 2024
Interest income |  | $ | 8,338 |  |  | $ | 6,805 |  |  | $ | 20,078 |  |  | $ | 20,349 |
Amortization of discount on available-for-sale securities |  |  | 1,009 |  |  |  | 6,644 |  |  |  | 3,894 |  |  |  | 16,684 |
Gain on deferred compensation plan investments |  |  | 3,793 |  |  |  | 3,894 |  |  |  | 8,023 |  |  |  | 9,180 |
Charitable commitments |  |  | (3,194 | ) |  |  | (6,400 | ) |  |  | (4,094 | ) |  |  | (18,550 | )
Other |  |  | 446 |  |  |  | (665 | ) |  |  | (158 | ) |  |  | (333 | )
Total |  | $ | 10,392 |  |  | $ | 10,278 |  |  | $ | 27,743 |  |  | $ | 27,330 |

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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- References No definition available. + Details
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