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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 29, 2012
Oct. 01, 2011
Inventory Disclosure [Abstract]    
Raw materials and purchased parts $ 188,643 $ 197,347
Work in progress 283,122 235,428
Finished goods 66,497 69,598
Inventories $ 538,262 $ 502,373