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Inventories - Components of Inventory (Details) - USD ($)
$ in Thousands
Mar. 28, 2020
Dec. 28, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 53,902 $ 55,913
Work-in-process 13,254 10,966
Finished goods 48,826 48,992
Total inventories $ 115,982 $ 115,871