Note 5 - Marketable Securities - Schedule of Securities (Details) - USD ($) $ in Thousands |
Nov. 30, 2025 |
Nov. 30, 2024 |
|---|---|---|
| Amortized cost | $ 1,736 | $ 8,839 |
| Unrealized gains | 18 | 65 |
| Unrealized losses | 0 | 0 |
| Fair value | 1,754 | 8,904 |
| Investments | 1,754 | 8,904 |
| Corporate Debt Securities [Member] | ||
| Amortized cost | 737 | 2,950 |
| Unrealized gains | 11 | 18 |
| Unrealized losses | 0 | 0 |
| Fair value | 748 | 2,968 |
| Investments | 748 | 2,968 |
| US Treasury Securities [Member] | ||
| Amortized cost | 999 | 5,889 |
| Unrealized gains | 7 | 47 |
| Unrealized losses | 0 | 0 |
| Fair value | 1,006 | 5,936 |
| Investments | $ 1,006 | $ 5,936 |
| X | ||||||||||
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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