Note 18 - Fair Value Gain (Loss) on Equity Securities - Unrealized Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Gain (Loss) on Equity Securities	$ (18,051)	$ 27,505	$ (13,083)
Other Public Listed Companies [Member]
Gain (Loss) on Equity Securities	(14,778)	26,350	(9,785)
Anfield Common Shares [Member]
Gain (Loss) on Equity Securities	(3,273)	1,155	(2,214)
Uex Shares Transferred As Consideration for Uex Acquisition [Member]
Gain (Loss) on Equity Securities	$ 0	$ 0	$ (1,084)