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Note 18 - Supplemental Cash Flow Information - Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2021
Interest and dividends received | $ 5,754 | $ 1,684 | $ 1,024
Income taxes refunded | 325 | 17 | 0
Income taxes paid | $ 75 | $ 0 | $ 142

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