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Note 10 - Derivative Liability - Liabilities Measured at Fair Value (Details) - Fair Value, Recurring [Member] - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Liabilities
Derivative Liability 65,289 549,919
Fair Value, Inputs, Level 1 [Member]    
Liabilities
Derivative Liability
Fair Value, Inputs, Level 2 [Member]    
Liabilities
Derivative Liability
Fair Value, Inputs, Level 3 [Member]    
Liabilities
Derivative Liability $ 65,289 $ 549,919