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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 28, 2013
Dec. 29, 2012
Inventory Disclosure [Abstract]    
Raw materials $ 62,241 $ 49,001
Work in process 21,698 17,058
Finished goods 77,626 61,176
Inventories, net $ 161,565 $ 127,235