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Commitments And Contingencies (Narrative) (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 30, 2012
Dec. 30, 2012
Dec. 25, 2011
Dec. 26, 2010
Nov. 02, 2011
Dec. 28, 2008
Commitments and Contingencies Disclosure [Abstract]            
Rental expense   $ 15,400,000 $ 17,300,000 $ 16,900,000    
Damages sought by defendants           5,700,000
Litigation settlement (900,000) (295,000) (943,000) 0    
Attorneys' fees and costs of the defendants         $ 6,600,000