Quarterly report [Sections 13 or 15(d)]

Note 7 - Marketable Debt Securities (Details Textual)

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Note 7 - Marketable Debt Securities (Details Textual) - USD ($)
$ in Millions
3 Months Ended 5 Months Ended
May 31, 2025
May 31, 2024
May 31, 2025
May 31, 2024
Debt Securities, Realized Gain (Loss) $ 0.1   $ 0.1 $ 0.1
Debt Securities, Unrealized Gain (Loss)   $ 0.1