Note 6 - Long-term Debt and Notes Payable to Bank - Long-term Debt (Details) - USD ($)	Jul. 31, 2018	Oct. 31, 2017
Long-term Loan	$ 6,482,683	$ 6,670,333
Less current installments	258,338	250,726
Long-term debt, excluding current installments	6,224,345	6,419,607
Virginia Real Estate Loan [Member]
Long-term Loan	4,821,180	4,960,738
North Carolina Real Estate Loan [Member]
Long-term Loan	$ 1,661,503	$ 1,709,595

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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