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Components of Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Apr. 30, 2015
Oct. 31, 2014
Inventory [Line Items]    
Raw materials and supplies $ 2,182us-gaap_InventoryRawMaterialsAndSupplies $ 1,784us-gaap_InventoryRawMaterialsAndSupplies
Work in process 8us-gaap_InventoryWorkInProcess 12us-gaap_InventoryWorkInProcess
Finished goods 3,361us-gaap_InventoryFinishedGoods 3,463us-gaap_InventoryFinishedGoods
Totals $ 5,551us-gaap_InventoryNet $ 5,259us-gaap_InventoryNet