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Note 6 - Long-term Debt and Note Payable to Bank - Long-term Debt (Details) - USD ($)
Apr. 30, 2017
Oct. 31, 2016
Long-term Loan $ 6,797,079 $ 6,945,994
Less current installments 251,216 294,214
Long-term debt, excluding current installments 6,545,863 6,651,780
Virginia Real Estate Loan [Member]    
Long-term Loan 5,055,036 5,165,785
North Carolina Real Estate Loan [Member]    
Long-term Loan $ 1,742,043 $ 1,780,209