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Fair Value Measurement (Recurring Measurement Table) (Details 3) (USD $)
 3 Months Ended
Mar. 29, 2013
Mar. 30, 2012
Dec. 28, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Foreign Currency Contract, Asset, Fair Value Disclosure $ 1,159,000    
InterestRateDerivativeLiabilitiesAtFairValue 626,000    
Accrued Contingent Consideration 1,600,000   1,530,000
Assets, Fair Value Disclosure [Abstract]      
Long Lived Assets Impairment Loss 0 0  
Cost And Equity Method Investments Aggregate Carrying Amount 9,800,000   9,100,000
Fair Value, Inputs, Level 1 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Foreign Currency Contract, Asset, Fair Value Disclosure 0    
InterestRateDerivativeLiabilitiesAtFairValue 0    
Accrued Contingent Consideration 0    
Fair Value, Inputs, Level 2 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Foreign Currency Contract, Asset, Fair Value Disclosure 1,159,000    
InterestRateDerivativeLiabilitiesAtFairValue 626,000    
Accrued Contingent Consideration 0    
Fair Value, Inputs, Level 3 [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Foreign Currency Contract, Asset, Fair Value Disclosure 0    
InterestRateDerivativeLiabilitiesAtFairValue 0    
Accrued Contingent Consideration $ 1,600,000