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Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Sep. 30, 2012
Inventory Disclosure [Abstract]    
Finished goods $ 79,087 $ 82,795
Work-in-progress 2,709 2,804
Raw materials 4,750 3,155
Total $ 86,546 $ 88,754