Note 12 - Commitments - Other Information Related to Leases (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Apr. 30, 2023	Oct. 31, 2022
ROU assets obtained in exchange for lease obligations, Operating leases	$ 141	$ 13,352
Operating leases (in months) (Month)	111 months 21 days	113 months 21 days
Weighted Average Discount Rate, Operating leases	3.75%	3.75%