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Inventories and major vendors - Components of Inventories (Detail) - USD ($)
$ in Thousands
Jul. 31, 2016
Oct. 31, 2015
Inventory [Line Items]    
Raw materials and supplies $ 3,037 $ 2,671
Work in process 358 270
Finished goods 3,097 3,987
Totals $ 6,492 $ 6,928