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Note 6 - Long-term Debt and Note Payable to Bank - Long-term Debt (Details) - USD ($)
Apr. 30, 2020
Oct. 31, 2019
Long-term Loan $ 5,316,421 $ 5,908,623
Less current installments 305,630 738,955
Long-term debt, excluding current installments 5,010,791 5,169,668
Virginia Real Estate Loan [Member]    
Long-term Loan 4,226,733 4,580,173
North Carolina Real Estate Loan [Member]    
Long-term Loan $ 1,089,688 $ 1,328,450