Note 6 - Property, Plant and Equipment, Net - Schedule of Property, Plant, and Equipment (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Property Plant and Equipment, Gross	$ 27,638,307	$ 26,754,937
Less: accumulated depreciation	12,911,814	11,541,494
Property plant & equipment, net	14,726,493	15,213,443
Land [Member]
Property Plant and Equipment, Gross	231,034	231,034
Building and Building Improvements [Member]
Property Plant and Equipment, Gross	3,492,667	3,222,243
Machinery and Equipment [Member]
Property Plant and Equipment, Gross	$ 23,914,606	$ 23,301,660