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Note 7 - Long-term Debt and Notes Payable - Long-term Debt (Details) (Parentheticals) - USD ($) | 12 Months Ended
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Oct. 31, 2021 | Oct. 31, 2020
Virginia Real Estate Loan [Member] |  |
Original principal | $ 6,500,000 | $ 6,500,000
Monthly installments | $ 31,812 | $ 31,812
Debt Instrument, Interest Rate, Stated Percentage | 3.95% | 3.95%
Final payment | $ 3,318,029 | $ 3,318,029
Maturity date | May 01, 2024 | May 01, 2024
North Carolina Real Estate Loan [Member] |  |
Original principal | $ 2,240,000 | $ 2,240,000
Monthly installments | $ 10,963 |
Debt Instrument, Interest Rate, Stated Percentage | 3.95% | 3.95%
Final payment | $ 711,773 | $ 711,773
Maturity date | May 01, 2024 | May 01, 2024

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