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Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Apr. 30, 2015
Oct. 31, 2014
Inventory Disclosure [Abstract]    
Raw materials $ 2,666us-gaap_InventoryRawMaterials $ 3,524us-gaap_InventoryRawMaterials
Work in-process 422us-gaap_InventoryWorkInProcess 467us-gaap_InventoryWorkInProcess
Finished goods 288,160us-gaap_InventoryFinishedGoods 280,526us-gaap_InventoryFinishedGoods
Total $ 291,248us-gaap_InventoryNet $ 284,517us-gaap_InventoryNet