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Inventories - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 32,536 $ 44,245
Work in process 40,459 40,344
Finished goods 68,292 83,881
Inventories, net $ 141,287 $ 168,470