Note 7 - Marketable Debt Securities (Details Textual) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended |
|---|---|---|
Aug. 31, 2025 |
Aug. 31, 2025 |
|
| Debt Securities, Unrealized Gain (Loss) | $ 0.1 | $ 0.1 |
| Maximum [Member] | ||
| Debt Securities, Realized Gain (Loss) | $ 0.1 | $ 0.1 |
| X | ||||||||||
- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|