Note 13 - Capital Stock - Schedule of Outstanding Stock Options (Details) - $ / shares	3 Months Ended				9 Months Ended
	Apr. 30, 2023	Jan. 31, 2023	Oct. 31, 2022	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Balance, number of stock options (in shares)	8,674,409	8,856,055	8,880,527		8,880,527
Balance, Weighted Average Exercise Price (in dollars per share)	$ 1.65	$ 1.65	$ 1.58		$ 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)	100,000	15,464	5,000
Granted, Weighted Average Exercise Price (in dollars per share)	$ 3.22	$ 3.78	$ 4.23
Exercised, number of stock options (in shares)	(337,500)	(197,110)	(2,331,222)	(1,182,605)	(2,865,832)	(2,457,982)
Exercised Options, Weighted Average Exercise Price (in dollars per share)	$ 1.61	$ 2.10	$ 1.61
Granted, Weighted Average Exercise Price (in dollars per share)	$ 3.22	$ 3.78	$ 4.23
Exercised, number of stock options (in shares)	(337,500)	(197,110)	(2,331,222)	(1,182,605)	(2,865,832)	(2,457,982)
Exercised Options, Weighted Average Exercise Price (in dollars per share)	$ 1.61	$ 2.10	$ 1.61
Balance, number of stock options (in shares)	8,436,909	8,674,409	8,856,055		8,436,909
Balance, Weighted Average Exercise Price (in dollars per share)	$ 1.67	$ 1.65	$ 1.65		$ 1.67