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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $)
In Thousands, unless otherwise specified
 1 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2011
Jun. 26, 2011
Dec. 31, 2011
Y
Dec. 25, 2010
Dec. 26, 2009
Dec. 31, 2011
Trade names
Dec. 31, 2011
Trade names
Intangible assets              
Intangible assets lives, Minimum (in years)     5        
Intangible assets lives, Maximum (in years)     20        
Impairment of intangible assets           $ 3,779 $ 3,779
Accumulated other comprehensive income (loss)              
Foreign currency translation adjustment     16,070 34,693      
Actuarial gain in defined benefit pension plan     51,317 28,952      
Loss on cash flow hedge     (3,335)        
Accumulated other comprehensive income (loss)     64,052 63,645      
Equity Method Investments              
Dividends received from non-consolidated subsidiaries       10,125      
Research and Development              
Research and development expenses     6,200 5,500 6,200    
Derivative Instrument              
Debt instrument issued, face amount   150,000          
Notional amount of derivative instrument   130,000          
Payment to counterparty to settle the derivative contract 3,568            
Loss on interest rate cash flow hedge derivative, recorded in accumulated other comprehensive income     $ 3,568