Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Inventory Valuation Reserves, Ending Balance	$ 52,922
Warrants To Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	2,130,268	2,130,268
Computers and Vehicles [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Computers and Vehicles [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Machinery and Furniture [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	7 years
Machinery and Furniture [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years