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Note 7 - Derivative Liabilities (Tables)
 9 Months Ended
Sep. 30, 2020
Notes Tables  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Volatility
    
76
 %
Risk-free interest rate
    
0.11
 %
Expected dividends
    
-
  
Expected term (in years)
    
.5
  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
    Level 1     Level 2     Level 3  
Balance January 1, 2019    
-
      
-
      
-
  
Additions    
-
      
-
     $
1,321,764
  
Change in Fair Value    
-
      
-
      
83,766
  
Balance at December 31, 2019   $
-
     $
-
     $
1,405,530
  
Additions    
-
      
-
      
317,776
  
Amendments    
 
      
 
      
(224,066
 )
Retirements    
 
      
 
      
(522,065
 )
Change in Fair Value    
 
      
 
      
(942,176
 )
Balance at June 30, 2020   $
 
     $
 
     $
34,999