Note 15 - Income (Loss) Per Share - Weighted Average Number of Shares Used in the Calculation of the Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jan. 31, 2025	Oct. 31, 2024	Jan. 31, 2024	Oct. 31, 2023	Jan. 31, 2025	Jan. 31, 2024
Net loss for the period	$ (10,234)	$ (20,158)	$ 2,250	$ 3,321	$ (30,392)	$ 5,571
Basic Weighted Average Number of Shares (in shares)	423,199,789		394,024,127		417,669,394	388,202,403
Dilutive Effect of Stock Awards and Warrants (in shares)	0		9,155,552		0	9,155,553
Diluted Weighted Average Number of Shares (in shares)	423,199,789		403,179,679		417,669,394	397,357,956
Net Income (Loss) Per Share – Basic (in dollars per share)	$ (0.02)		$ 0.01		$ (0.07)	$ 0.01
Net Income (Loss) Per Share – Diluted (in dollars per share)	$ (0.02)		$ 0.01		$ (0.07)	$ 0.01