Note 12 - Commitments - Other Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2023	Oct. 31, 2022
ROU Assets Obtained in Exchange For Lease Obligations, Operating Leases	$ 281	$ 13,352
Operating leases (in months) (Month)	110 months 3 days	113 months 21 days
Weighted Average Discount Rate, Operating leases	3.77%	3.75%