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Composition of Inventories, Net (Detail) - USD ($)
$ in Thousands
Sep. 27, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw material $ 117,500 $ 118,595
Work-in-process 28,406 32,695
Finished goods 45,411 45,401
Inventories, net $ 191,317 $ 196,691