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Summary of Significant Accounting Policies (Details 3) (USD $)
In Thousands
3 Months Ended
Jun. 25, 2011
Sep. 24, 2011
Jun. 08, 2011
Dec. 25, 2010
Accumulated other comprehensive income (loss)    
Foreign currency translation adjustment $ 16,278 $ 34,693
Actuarial gain in defined benefit pension plan 28,925 28,952
Loss on cash flow hedge (3,435)  
Accumulated other comprehensive income (loss) 41,768 63,645
Derivative Instrument    
Debt instrument issued, face amount150,000   
Notional amount of derivative instrument130,000   
Payment to counterparty to settle the derivative contract  3,568 
Loss on interest rate cash flow hedge derivative, recorded in accumulated other comprehensive income $ 3,435