Note 5 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Property, plant and equipment, gross	$ 6,949,920	$ 6,987,596
Less - accumulated depreciation and amortization	(4,840,200)	(4,621,639)
Property, plant and equipment, net	2,109,720	2,365,957
Other Assets [Member]
Property, plant and equipment, gross	3,678,647	3,678,647
Leasehold Improvements [Member]
Property, plant and equipment, gross	2,420,028	2,420,028
Computer Equipment [Member]
Property, plant and equipment, gross	473,386	511,062
Furniture and Fixtures [Member]
Property, plant and equipment, gross	$ 377,859	$ 377,859

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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