Note 7 - Long-term Debt and Notes Payable - Long-term Debt (Details) (Parentheticals) - USD ($) $ in Thousands	Oct. 31, 2023	Oct. 31, 2022
Virginia Real Estate Loan [Member]
Debt Instrument, Face Amount	$ 6,500	$ 6,500
North Carolina Real Estate Loan [Member]
Debt Instrument, Face Amount	$ 2,240	$ 2,240

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant