Contingencies (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Mar. 30, 2013 Huntsville Site [Member] USD ($)	Mar. 30, 2013 Tekelec Matter [Member] EUR (€)	Mar. 30, 2013 Groundwater Removal [Member] Norco Site [Member] USD ($)	Mar. 30, 2013 Project Management [Member] Norco Site [Member] USD ($)	Mar. 30, 2013 Investigation Report [Member] Huntsville Site [Member] USD ($)	Mar. 30, 2013 Investigation Report [Member] Norco Site [Member] USD ($)
Site Contingency [Line Items]
Litigation Settlement, Gross		$ 110,000
Environmental Costs Recovered	33,000
Environmental Remediation Expense To Date			4,000		12,000	32,000
Additional Expected Project Expenditures Low Estimate			3,000		17,200		500
Additional Expected Project Expenditures High Estimate			4,000		23,700	200	750	200
Loss Contingency, Range of Possible Loss, Maximum				11,333
Loss Contingency Damages Sought Value				3,742
Loss Contingency, Expenses Sought, Value				€ 312