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Note 3 - Inventories and Major Vendors (Tables)
6 Months Ended
Apr. 30, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
April 30, 2020
   
October 31, 2019
 
                 
Raw materials and supplies
  $
4,289
    $
3,576
 
Work in process
   
434
     
791
 
Finished goods
   
4,377
     
3,878
 
                 
Totals
  $
9,100
    $
8,245