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Note 10 - Stockholders Equity (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   
 
 
 
 
 
 
Weighted
 
 
 
 
   
 
 
 
Weighted
 
Average
 
 
 
 
   
 
 
 
Average
 
Remaining
 
Aggregate
 
   
 
 
 
Exercise
 
Contractual
 
Intrinsic
 
Warrants
 
Shares
 
Price
 
Life (Years)
 
Value
 
                           
Outstanding at January 1, 2018
   
1,642,903
  $
0.32
   
4.5
  $
539
 
Issued
   
-
   
-
   
-
   
-
 
Exercised
   
(1,612,903
)
 
0.31
   
-
   
-
 
Forfeited/Cancelled
   
-
   
-
   
-
   
-
 
Outstan
ding at December 31, 2018
   
30,000
  $
0.70
   
2.5
  $
-
 
Issued
   
625,000
   
0.20
   
4.9
   
-
 
Exercised
   
-
   
-
   
-
   
-
 
Forfeited/Cancelled
   
-
   
   
-
   
-
 
Outstanding at December 31,
2019
   
655,000
  $
0.22
   
4.7
  $
-
 
                           
Exercisable at December 31, 2019
   
655,000
  $
0.22
   
4.7
  $
-