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Restructuring and Excess Facilities (Details) (Excess Facilities [Member], USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 29, 2012
Excess Facilities [Member]
 
Activities in the restructuring accrual  
Balance at December 31, 2011 $ 2,593
Provisions   
Cash payments (855)
Balance at June 29, 2012 $ 1,738