Note 6 - Long-term Debt and Note Payable to Bank - Long-term Debt (Details) - USD ($)	Jan. 31, 2020	Oct. 31, 2019
Long-term Loan	$ 5,589,164	$ 5,908,623
Less current installments	500,357	738,955
Long-term debt, excluding current installments	5,088,807	5,169,668
Virginia Real Estate Loan [Member]
Long-term Loan	4,279,596	4,580,173
North Carolina Real Estate Loan [Member]
Long-term Loan	$ 1,309,568	$ 1,328,450

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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