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Note 14 - Convertible Notes Payable (Tables)
 9 Months Ended
Sep. 30, 2020
Notes Tables  
Convertible Debt [Table Text Block]
   
September
30,
    
December 31,
  
   
2020
    
2019
  
                 
Securities Purchase Agreement dated July 10, 2019
   $
-
     $
2,255,454
  
January 2020 Note
    
-
      
-
  
February 2020 Note
    
-
      
-
  
May 2020 Note
    
-
      
-
  
June 2020 Note
    
-
      
-
  
Convertible notes payable, net
   $
-
     $
2,255,454
  
   
September 30,
    
December 31,
  
   
2020
    
2019
  
Principal amount
   $
3,789,000
     $
3,060,000
  
Less: conversion of principal into shares of common stock
    
(3,789,000
)
    
-
  
Net Principal amount
    
-
      
3,060,000
  
                 
Less: unamortized debt discount and beneficial conversion feature
    
-
      
(574,330
)
Less: unamortized debt issuance costs
    
-
      
(230,216
)
Notes payable, net of unamortized debt discount and debt issuance costs
   $
-
     $
2,255,454