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Inventories Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 28, 2014
Dec. 28, 2013
Inventory Disclosure [Abstract]    
Raw materials and parts $ 116,697 $ 110,310
Work-in-process 18,158 20,448
Finished goods 125,178 89,358
Inventory, Gross, Total $ 260,033 $ 220,116