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Note 7 - Long-term Debt and Notes Payable - Long-term Debt (Details) (Parentheticals) - USD ($) $ in Thousands | Oct. 31, 2023 | Oct. 31, 2022
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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

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