Note 13 - Capital Stock - Schedule of Outstanding Unvested Stock Options (Details) - $ / shares	3 Months Ended
	Apr. 30, 2023	Jan. 31, 2023	Oct. 31, 2022
Nonvested balance (in shares)	1,646,169	2,025,563	2,186,154
Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 1.74	$ 1.74	$ 1.79
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)			$ 1.75
Granted, number of stock options (in shares)	100,000	15,464	5,000
Granted, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 2.04	$ 2.40	$ 2.70
Vested (in shares)	(15,680)	(394,858)	(2,467,341)
Vested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 1.56	$ 1.78	$ 1.79
Nonvested balance (in shares)	1,730,489	1,646,169	2,025,563
Nonvested, Weighted Average Grant-Date Fair Value (in dollars per share)	$ 1.76	$ 1.74	$ 1.74