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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 28, 2014
Dec. 29, 2013
Inventory Disclosure [Abstract]    
Raw materials $ 22,468 $ 18,040
Work-in-process 3,756 2,901
Finished goods 73,320 62,580
Total $ 99,544 $ 83,521