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Note 2 - Revenues (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Disaggregation of Revenue [Table Text Block]
   
Three Months Ended
 
   
March 31,
 
   
2021
   
2020
 
Trappsol® Cyclo™
  $
1,840
    $
30,096
 
Trappsol® HPB
   
201,348
     
214,962
 
Trappsol® Fine Chemical
   
142,495
     
78,109
 
Aquaplex®
   
11,276
     
-
 
Other
   
1,174
     
2,567
 
Total revenues
  $
358,133
    $
325,734