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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Jan. 03, 2015
Dec. 28, 2013
Schedule of Inventory [Line Items]    
Raw materials $ 29,300us-gaap_InventoryRawMaterialsNetOfReserves $ 32,129us-gaap_InventoryRawMaterialsNetOfReserves
Work-in-progress 16,442us-gaap_InventoryWorkInProcessNetOfReserves 9,356us-gaap_InventoryWorkInProcessNetOfReserves
Finished goods 99,790us-gaap_InventoryFinishedGoodsNetOfReserves 91,984us-gaap_InventoryFinishedGoodsNetOfReserves
Inventory, net $ 145,532us-gaap_InventoryNet $ 133,469us-gaap_InventoryNet