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Note 15 - Stockholders' Equity (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Dividends Declared [Table Text Block] |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2025 |  | 2024 |  | 2025 |  | 2024
Dividend declared per share |  | $ | 1.56 |  |  | $ | 1.25 |  |  | $ | 4.68 |  |  | $ | 3.75 |
Total amount |  | $ | 74,731 |  |  | $ | 60,974 |  |  | $ | 224,130 |  |  | $ | 182,680 |

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Namespace Prefix: | us-gaap_
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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