Note 8 - Investments in Equity Securities - Changes in Investments in Equity Securities (Details) - USD ($) $ in Thousands	6 Months Ended
Jan. 31, 2026	Jan. 31, 2025
Balance	$ 28,470
Investment in public listed companies	36,576	$ 10,455
Sale of investment in publicly listed companies	(1,168)	$ (54,372)
Fair value gain on equity securities	20,085
Balance	$ 83,963

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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+ Details