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Nature of Operations and Summary of Significant Accounting Policies - Inventories (Details) - USD ($)
$ in Thousands
Mar. 30, 2019
Dec. 29, 2018
Accounting Policies [Abstract]    
Raw Materials $ 46,684 $ 44,522
Work in Process 20,239 15,876
Finished Goods 36,106 25,975
Total Inventories $ 103,029 $ 86,373