Annual report pursuant to Section 13 and 15(d)

Note 9 - Property and Equipment - Summary of Major Classes of Property and Equipment (Details)

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Note 9 - Property and Equipment - Summary of Major Classes of Property and Equipment (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment, Gross, Ending Balance $ 1,251,185 $ 1,206,058
Machinery and Equipment [Member]    
Property, Plant and Equipment, Gross, Ending Balance $ 575,091 575,091
Machinery and Equipment [Member] | Minimum [Member]    
Property and Equipment, Useful Life (Year) 3 years  
Machinery and Equipment [Member] | Maximum [Member]    
Property and Equipment, Useful Life (Year) 5 years  
Other Machinery and Equipment [Member]    
Property and Equipment, Useful Life (Year) 5 years  
Property, Plant and Equipment, Gross, Ending Balance $ 323,259 293,757
Furniture and Fixtures [Member]    
Property and Equipment, Useful Life (Year) 7 years  
Property, Plant and Equipment, Gross, Ending Balance $ 4,327 4,327
Purchased Software [Member]    
Property and Equipment, Useful Life (Year) 3 years  
Property, Plant and Equipment, Gross, Ending Balance $ 336,060 320,435
Leasehold Improvements [Member]    
Property, Plant and Equipment, Gross, Ending Balance [1] $ 12,448 $ 12,448
Property and Equipment, Useful Life [1] Term of Lease  
[1] We amortize leasehold improvements over the term of the lease, which in all cases is shorter than the estimated useful life of the asset.