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Note 3 - Revenue Recognition (Tables)
3 Months Ended
Dec. 31, 2018
Notes Tables  
Disaggregation of Revenue [Table Text Block]
   
Three months ended
December 31,
 
   
201
8
   
201
7
 
Grocery
  $
151,301
     
136,101
 
Dietary supplements
   
45,784
     
43,565
 
Other
   
24,430
     
22,814
 
    $
221,515
     
202,480