Note 13 - Capital Stock - Continuity Schedule of Outstanding Share Purchase Warrants (Details)	3 Months Ended
	Oct. 31, 2022 $ / shares shares
Balance, Number of Warrants (in shares) | shares	3,615,454
Balance, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 1.92
Issuance of Replacement Warrants (Note 3,12), Number of Warrants (in shares) | shares	4,660,580
Issuance of Replacement Warrants (Note 3,12), Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 2.80
Exercised, Number of Warrants (in shares) | shares	(3,410,898)
Exercised, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 1.80
Expired, Number of Warrants (in shares) | shares	(27,550)
Expired, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 1.80
Balance, Number of Warrants (in shares) | shares	4,837,586
Balance, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 2.85