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Composition Of Certain Financial Statement Captions (Narrative) (Details) - USD ($)
$ in Thousands
Jan. 01, 2016
Sep. 25, 2015
Composition Of Certain Financial Statement Captions [Line Items]    
Raw materials $ 2,600 $ 3,246
Capital expenditures incurred, but not yet paid 21,100 20,500
Other Noncurrent Assets [Member]    
Composition Of Certain Financial Statement Captions [Line Items]    
Raw materials $ 1,400 $ 1,400