Note 13 - Capital Stock - Schedule of Outstanding Stock Options (Details) - $ / shares	3 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Balance, number of stock options (in shares)	8,880,527
Balance, Weighted Average Exercise Price (in dollars per share)	$ 1.58
Issuance of Replacement Options (Note 3), number of stock options (in shares)	2,301,750
Issuance of Replacement Options (Note 3), Weighted Average Exercise Price (in dollars per share)	$ 1.90
Granted, number of stock options (in shares)	5,000
Granted, Weighted Average Exercise Price (in dollars per share)	$ 4.23
Exercised, number of stock options (in shares)	(2,331,222)	(1,030,543)
Exercised Options, Weighted Average Exercise Price (in dollars per share)	$ 1.61
Balance, number of stock options (in shares)	8,856,055
Balance, Weighted Average Exercise Price (in dollars per share)	$ 1.65