Note 6 - Property and Equipment, Net - Property and Equipment (Details) - USD ($)	Aug. 31, 2021	Feb. 28, 2021
Property, plant and equipment, gross	$ 17,764,248	$ 17,683,432
Less accumulated depreciation	(12,267,722)	(12,531,417)
Property and equipment, net	5,496,526	5,152,015
Land [Member]
Property, plant and equipment, gross	513,618	513,618
Building [Member]
Property, plant and equipment, gross	5,133,854	4,827,807
Machinery and Equipment [Member]
Property, plant and equipment, gross	9,865,913	10,129,508
Furniture and Fixtures [Member]
Property, plant and equipment, gross	785,310	797,303
Leasehold Improvements [Member]
Property, plant and equipment, gross	982,468	985,407
Transportation Equipment [Member]
Property, plant and equipment, gross	$ 483,085	$ 429,789

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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