Note 6 - Property and Equipment, Net - Property and Equipment (Details) - USD ($)	May 31, 2022	Feb. 28, 2022
Property, plant and equipment, gross	$ 18,411,000	$ 18,123,190
Less accumulated depreciation	(12,808,136)	(12,623,300)
Property and equipment, net	5,602,864	5,499,890
Land [Member]
Property, plant and equipment, gross	513,618	513,618
Building [Member]
Property, plant and equipment, gross	5,148,854	5,148,854
Machinery and Equipment [Member]
Property, plant and equipment, gross	10,492,716	10,207,182
Furniture and Fixtures [Member]
Property, plant and equipment, gross	790,197	787,921
Leasehold Improvements [Member]
Property, plant and equipment, gross	985,914	985,914
Transportation Equipment [Member]
Property, plant and equipment, gross	$ 479,701	$ 479,701

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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