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Long-Lived Assets, Consisting of Property, Plant and Equipment by Geographic Area (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Sep. 30, 2011
Long-Lived Assets by Geographical Areas [Line Items]    
Property, plant and equipment, net $ 64,478 $ 68,596
North America
   
Long-Lived Assets by Geographical Areas [Line Items]    
Property, plant and equipment, net 51,546 55,295
Asia/Pacific
   
Long-Lived Assets by Geographical Areas [Line Items]    
Property, plant and equipment, net 2,123 1,920
Europe
   
Long-Lived Assets by Geographical Areas [Line Items]    
Property, plant and equipment, net $ 10,809 $ 11,381