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Note 8 - Derivative Liability (Details Textual)
9 Months Ended
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Gain on Derivative Instruments, Pretax $ 22,252 $ 465,575
Convertible Credit Line Payable, Related Party [Member] | Measurement Input, Share Price [Member]    
Embedded Derivative Liability, Measurement Input 1 1
Convertible Credit Line Payable, Related Party [Member] | Measurement Input, Price Volatility [Member]    
Embedded Derivative Liability, Measurement Input 1.32 1.38
Convertible Credit Line Payable, Related Party [Member] | Measurement Input, Discount Rate [Member]    
Embedded Derivative Liability, Measurement Input 0.0011 0.0163