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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 28, 2014
Dec. 28, 2013
Inventory, Net [Abstract]    
Raw materials $ 35,077 $ 32,129
Work-in-progress 14,144 9,356
Finished goods 131,322 91,984
Inventory, net $ 180,543 $ 133,469