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Nature of Operations and Summary of Significant Accounting Policies - Inventories (Details) - USD ($)
$ in Thousands
Jun. 29, 2019
Dec. 29, 2018
Accounting Policies [Abstract]    
Raw Materials $ 49,899 $ 44,522
Work in Process 21,800 15,876
Finished Goods 38,089 25,975
Total Inventories $ 109,788 $ 86,373