Inventories Inventories (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Inventory Disclosure [Abstract]
Inventory, Raw Materials, Net of Reserves	$ 233,061	$ 180,559
Inventory, Work in Process, Net of Reserves	56,838	38,917
Inventory, Finished Goods, Net of Reserves	222,925	205,163
Inventories, net	$ 512,824	$ 424,639