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Contingencies (Details) - 6 months ended Jul. 02, 2016
€ in Thousands, $ in Thousands
USD ($)
EUR (€)
Site Contingency [Line Items]    
Environmental Costs Recovered $ 37,000  
Huntsville Site [Member]    
Site Contingency [Line Items]    
Environmental Remediation Expense To Date 5,000  
Additional Expected Project Expenditures Low Estimate 3,000  
Additional Expected Project Expenditures High Estimate 4,000  
Huntsville Site [Member] | Investigation Report [Member]    
Site Contingency [Line Items]    
Additional Expected Project Expenditures Low Estimate 300  
Additional Expected Project Expenditures High Estimate 750  
Norco Site [Member] | Remediation, Project Management, Regulatory Oversight, and Investigative and Feasability Studies [Member]    
Site Contingency [Line Items]    
Environmental Remediation Expense To Date 50,000  
Additional Expected Project Expenditures Low Estimate 12,400  
Additional Expected Project Expenditures High Estimate $ 24,500  
Tekelec Matter [Member]    
Site Contingency [Line Items]    
Loss Contingency, Range of Possible Loss, Maximum | €   € 11,333
Loss Contingency Damages Sought Value | €   3,742
Loss Contingency, Expenses Sought, Value | €   € 312