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Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Tables)
3 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Product Information [Table Text Block]
   
Three months ended
December 31,
 
   
201
8
   
201
7
 
Grocery
   
68
%
   
67
 
Dietary supplements
   
21
     
22
 
Other
   
11
     
11
 
     
100
%
   
100