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INVENTORIES (Tables)
 3 Months Ended
Jan. 31, 2021
INVENTORIES [Abstract]  
Inventories

Inventories are stated at the lower of cost, determined under the first-in, first-out ("FIFO") method, or net realizable value. Presented below are the components of inventory at the balance sheet dates:

  
January 31,
2021
    
October 31,
2020
  
             
Raw materials
  
$
55,458
    
$
56,389
  
Work in process
    
935
      
767
  
Finished goods
    
14
      
113
  
                 
   
$
56,407
    
$
57,269