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Restructuring (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 28, 2012
employee
Sep. 30, 2011
Oct. 01, 2010
Restructuring Cost and Reserve [Line Items]      
Restructuring and Related Activities, Initiation Date Jul. 11, 2012    
Restructuring and Related Cost, Expected Number of Positions Eliminated 24    
Provision for Doubtful Accounts $ 1,558 $ 448 $ 995
Restructuring and Related Cost, Expected Cost 2,400    
Trade Accounts Receivable Restructuring Related [Member]
     
Restructuring Cost and Reserve [Line Items]      
Provision for Doubtful Accounts $ 450