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Note 4 - Stock Options and Warrants (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   
Number of Shares
   
Exercise Price
   
Weighted Average
Remaining Life (in years)
 
Warrants as of December 31, 2018
   
-
     
-
     
 
 
Issued during 2019
   
84,295
    $
1.95
     
 
 
Warrants as of December 31, 2019
   
84,295
    $
1.95
     
4.53
 
Issued during 2020
   
115,385
    $
0.01
     
 
 
Issued during 2020    
32,053
    $
1.95
     
 
 
Issued during 2020    
360,000
    $
1.00
     
 
 
Exercised during 2020    
(115,385
)   $
0.01
     
 
 
Warrants as of September 30, 2020    
476,348
    $
0.97
     
8.57