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Inventories (Details) (USD $)
In Thousands
Jul. 02, 2011
Dec. 31, 2010
Inventory Items, Net Of Reserves Alternative [Abstract]    
Raw materials $ 76,518 $ 63,475
Work in progress 22,235 17,301
Finished goods 144,427 123,524
Total inventories $ 243,180 $ 204,300