Note 5 - Property, Plant and Equipment - Major Classes of Property, Plant and Equipment (Details) - USD ($)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Property, plant and equipment, gross		$ 38,071,129	$ 40,053,731
Less: Accumulated depreciation and amortization		(9,227,566)	(7,951,396)
Property, plant and equipment, net		28,843,563	32,102,335
Depreciation and amortization	[1]	1,389,145	1,042,829
Land [Member]
Property, plant and equipment, gross		6,929,000	6,929,000
Building [Member]
Property, plant and equipment, gross		15,917,000	15,917,000
Building Improvements [Member]
Property, plant and equipment, gross		8,141,791	7,864,757
Machinery and Equipment [Member]
Property, plant and equipment, gross		3,340,005	3,592,351
Furniture and Fixtures [Member]
Property, plant and equipment, gross		613,765	613,765
Computer Equipment [Member]
Property, plant and equipment, gross		493,349	487,902
Software Development [Member]
Property, plant and equipment, gross		435,593	438,391
Transportation Equipment [Member]
Property, plant and equipment, gross		114,511	114,511
Lab Equipment [Member]
Property, plant and equipment, gross		1,992,179	1,985,179
Construction in Progress [Member]
Property, plant and equipment, gross		$ 93,936	$ 2,110,875

[1] Includes amortization expense of $124,550 and $120,488 for the year ending December 31, 2020 and the year ended December 31, 2019, respectively. Such amortization expense relates to other capitalized and intangibles assets.