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Manufacturing Restructuring Costs - (Details) (Facility closing, USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Oct. 01, 2011
Facility closing
       
Restructuring Reserve [RollForward]        
Balance at the beginning of the period $ 3,602 $ 4,348 $ 4,086 $ 4,583
Addtions 0 0 0 228
Accretion of related lease obligations 141 118 399 376
Payments (250) (251) (992) (972)
Balance at the end of the period $ 3,493 $ 4,215 $ 3,493 $ 4,215