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Note 3 - Financial Instruments and Investments (Details Textual) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Feb. 28, 2026 | Nov. 29, 2025
Short-Term Investments | $ 17,963 | $ 17,963
Certificates of Deposit, Average Term | 7 months |
Minimum [Member] |  |
Interest Rate of Certificates of Deposit | 2.00% |
Maximum [Member] |  |
Interest Rate of Certificates of Deposit | 4.10% |
Weighted Average [Member] |  |
Interest Rate of Certificates of Deposit | 3.60% |
Certificates of Deposit Terms | 5 months |

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