Note 11 - Commitments - Other Information Related to Leases (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Apr. 30, 2024	Oct. 31, 2023
Operating leases	$ 53	$ 6,479
Operating leases (in months) (Month)	109 months 13 days	114 months 7 days
Operating leases	6.97%	6.96%