Note 4 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Property and equipment, gross	$ 5,960,016	$ 2,605,800
Property, Plant and Equipment, Gross, Ending Balance	5,960,016	2,605,800
Less accumulated depreciation	(1,829,426)	(1,578,488)
Property, Plant and Equipment, Net, Total	4,130,590	1,027,312
Production Assets [Member]
Property and equipment, gross	1,802,749	1,616,308
Property, Plant and Equipment, Gross, Ending Balance	1,802,749	1,616,308
Computer Equipment and Software [Member]
Property and equipment, gross	650,552	647,852
Property, Plant and Equipment, Gross, Ending Balance	650,552	647,852
Lab Equipment [Member]
Property and equipment, gross	3,240,462	103,427
Property, Plant and Equipment, Gross, Ending Balance	3,240,462	103,427
Furniture and Fixtures [Member]
Property and equipment, gross	51,354	51,354
Property, Plant and Equipment, Gross, Ending Balance	51,354	51,354
Leasehold Improvements [Member]
Property and equipment, gross	123,109	123,109
Property, Plant and Equipment, Gross, Ending Balance	123,109	123,109
Construction in Progress [Member]
Property and equipment, gross	91,790	63,750
Property, Plant and Equipment, Gross, Ending Balance	$ 91,790	$ 63,750