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Note 3 - Inventories and Major Vendors (Tables)
3 Months Ended
Jan. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
January 31, 2021
   
October 31, 2020
 
                 
Raw materials and supplies
  $
4,668
    $
4,410
 
Work in process
   
278
     
196
 
Finished goods
   
4,073
     
3,980
 
                 
Totals
  $
9,019
    $
8,586