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SEGMENT INFORMATION - Long Lived Assets by Geographic Area (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property and equipment $ 125,644 $ 116,146
United States
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property and equipment 101,297 93,496
Europe
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property and equipment 12,972 13,253
Asia
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property and equipment 10,085 7,912
Other
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property and equipment $ 1,290 $ 1,485