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Inventories and major vendors - Components of Inventories (Detail) - USD ($)
$ in Thousands
Oct. 31, 2017
Oct. 31, 2016
Inventory [Line Items]    
Raw materials and supplies $ 2,520 $ 2,642
Work in process 194 279
Finished goods 3,395 3,101
Totals $ 6,109 $ 6,022