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Long Lived Assets by Geographic Area (Detail) (USD $)
In Thousands, unless otherwise specified
Apr. 01, 2012
Oct. 02, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property And Equipment $ 104,959 $ 89,922
United States
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property And Equipment 81,485 69,647
Europe
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property And Equipment 13,622 12,632
Asia
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property And Equipment 8,151 7,643
Other
   
Revenues from External Customers and Long-Lived Assets [Line Items]    
Property And Equipment $ 1,701