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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Dec. 30, 2017
Dec. 31, 2016
[1]
Accounting Policies [Abstract]    
Raw materials $ 179,659 $ 152,497
Work-in-process 75,754 61,048
Finished goods 262,231 271,276
Inventory $ 517,644 $ 484,821
[1] Inventory balances by major class of inventory as of December 31, 2016 have been recast to conform to the current year presentation.