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Accumulated Other Comprehensive Loss (Tables)
12 Months Ended
Aug. 27, 2011
Accumulated Other Comprehensive Loss [Abstract] 
Changes in accumulated other comprehensive loss
Changes in Accumulated other comprehensive loss consisted of the following:
                                         
                    Unrealized              
    Pension     Foreign     Loss (Gain) on     Net     Accumulated  
    Liability     Currency     Marketable     Derivative     Other  
    Adjustments,     Translation     Securities,     Activity,     Comprehensive  
(in thousands)   net of taxes     Adjustments     net of taxes     net of taxes     Loss  
Balance at August 29, 2009
  $ 51,215     $ 45,453     $ (754 )   $ (3,879 )   $ 92,035  
Fiscal 2010 activity
    8,144       (705 )     104       6,890       14,433  
 
                             
Balance at August 28, 2010
    59,359       44,748       (650 )     3,011       106,468  
Fiscal 2011 activity
    17,346       (8,347 )     171       4,053       13,223  
 
                             
Balance at August 27, 2011
  $ 76,705     $ 36,401     $ (479 )   $ 7,064     $ 119,691