Note 6 - Property, Plant and Equipment, Net - Schedule of Property, Plant, and Equipment (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Property Plant and Equipment, Gross	$ 30,902,741	$ 28,842,940
Less: accumulated depreciation	14,710,075	14,156,750
Property plant & equipment, net	16,192,666	14,686,190
Land [Member]
Property Plant and Equipment, Gross	423,034	231,034
Building and Building Improvements [Member]
Property Plant and Equipment, Gross	4,847,586	3,760,203
Machinery and Equipment [Member]
Property Plant and Equipment, Gross	$ 25,632,121	$ 24,851,703