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Inventories - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw material $ 288,771 $ 235,593
Work-in-process 79,367 61,908
Finished goods 94,008 87,188
Inventories $ 462,146 $ 384,689