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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2021 | Nov. 30, 2020 | Jul. 27, 2018
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Financing Receivable, after Allowance for Credit Loss | $ 0 | $ 24,421 | $ 23,572 | $ 96,016 |
Note Receivable Upon Completion of Galore Creek Project Pre-feasibility [Member] |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss | $ 75,000 |  |  |  | $ 75,000

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