Note 14 - 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						9 Months Ended
	Apr. 30, 2024	Jan. 31, 2024	Oct. 31, 2023	Apr. 30, 2023	Jan. 31, 2023	Oct. 31, 2022	Apr. 30, 2024	Apr. 30, 2023
Net income for the period	$ (19,677)	$ 2,250	$ 3,321	$ (10,960)	$ 10,892	$ (3,756)	$ (14,106)	$ (3,824)
Basic Weighted Average Number of Shares (in shares)	404,104,490			375,759,521			393,425,716	360,554,427
Dilutive Effect of Stock Awards and Warrants (in shares)	0			0			0	0
Diluted Weighted Average Number of Shares (in shares)	404,104,490			375,759,521			393,425,716	360,554,427
Net Loss Per Share - Basic (in dollars per share)	$ (0.05)			$ (0.03)			$ (0.04)	$ (0.01)
Net Loss Per Share - Diluted (in dollars per share)	$ (0.05)			$ (0.03)			$ (0.04)	$ (0.01)