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Inventories - Components of Inventories (Details) - USD ($)
$ in Thousands
Dec. 29, 2018
Dec. 30, 2017
Inventory Disclosure [Abstract]    
Raw materials $ 69,883 $ 39,030
Work in process 88,505 27,454
Finished goods 99,840 74,305
Total $ 258,228 $ 140,789