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Note U - Earnings Per Share (EPS) (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
201
9
   
201
8
 
                 
Basic Numerator:
 
 
 
 
 
 
 
 
Net Loss
  $
(14,588,700
)
  $
(6,868,875
)
Deemed dividend from trigger of anti-dilution provision feature
   
-
     
(1,428,966
)
Convertible preferred stock dividends
   
-
     
(198,033
)
Net loss available to common stockholders (basic and diluted EPS)
  $
(14,588,700
)
  $
(8,495,874
)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
   
Years ended December 31,
 
   
201
9
   
201
8
 
                 
Stock options
   
945
     
83
 
Warrants
   
-
     
697,879
 
Potentially dilutive securities
   
945
     
697,962
 
   
Years ended December 31,
 
   
201
9
   
201
8
 
                 
Stock options
   
1,749,724
     
1,583,014
 
Warrants
   
3,388,474
     
186,806
 
Convertible notes
   
1,458,740
     
-
 
Preferred stock
   
-
     
1,426,756
 
Total
   
6,596,938
     
3,196,576