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Note 5 - Debt - Interest Expense (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
GRA Note $ 1,286 $ 143,524
Senior Notes [Member]    
GRA Note 633 1,727
Paycheck Protection Program CARES Act [Member]    
GRA Note 653 1,203
Insurance Premium Financing Costs[Member]    
GRA Note 1,743
Convertible Debt [Member]    
GRA Note $ 138,851