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Note 14 - Warrant Liability (Details Textual)
Jul. 02, 2022
$ / shares
Dec. 31, 2021
USD ($)
Jul. 02, 2021
$ / shares
shares
Mar. 31, 2021
USD ($)
Warrant Liability, Current   $ 182,161   $ 0
Consulting Agreement [Member]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares     3,500,000  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 0.17  
Class of Warrant or Right, Exercisable Period (Month)     12 months  
Warrant Liability, Current   287,844    
Warrants and Rights Outstanding   $ 182,161    
Consulting Agreement [Member] | Measurement Input, Risk Free Interest Rate [Member]        
Warrants and Rights Outstanding, Measurement Input   1.58    
Consulting Agreement [Member] | Measurement Input, Price Volatility [Member]        
Warrants and Rights Outstanding, Measurement Input   143    
Consulting Agreement [Member] | Measurement Input, Expected Term [Member]        
Warrants and Rights Outstanding, Measurement Input   2    
Consulting Agreement [Member] | Measurement Input, Expected Dividend Rate [Member]        
Warrants and Rights Outstanding, Measurement Input   0    
Consulting Agreement [Member] | Forecast [Member]        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 0.20      
Class of Warrant or Right, Exercisable Period (Month) 12 months