Note 10 - Loan and Credit Agreements - Summary of Term Debt (Details) - USD ($)	May 31, 2019	Nov. 30, 2018
Term debt	$ 2,476,752	$ 2,750,477
Less current portion of term debt	83,250	227,459
Term debt, excluding current portion	2,393,502	2,523,018
Term Loan Due October 2037 [Member]
Term debt	2,476,752	2,517,510
Iowa Finance Authority Term Loan [Member]
Term debt		$ 232,967

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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