Note 5 - Property, Plant, and Equipment - Major Classes of Property, Plant, and Equipment (Details) - USD ($)	Nov. 30, 2022	Nov. 30, 2021
Property, plant and equipment, gross	$ 21,218,658	$ 19,754,010
Less accumulated depreciation	(15,039,741)	(14,516,682)
Property, plant and equipment	6,178,917	5,237,328
Land [Member]
Property, plant and equipment, gross	220,503	220,503
Building and Building Improvements [Member]
Property, plant and equipment, gross	8,235,981	7,460,698
Construction in Progress [Member]
Property, plant and equipment, gross	357,644	160,353
Machinery and Equipment [Member]
Property, plant and equipment, gross	11,721,908	11,286,411
Vehicles [Member]
Property, plant and equipment, gross	567,563	510,986
Furniture and Fixtures [Member]
Property, plant and equipment, gross	$ 115,059	$ 115,059

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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