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Inventories - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 49,135 $ 52,930
Work in process 43,456 40,888
Finished goods 26,131 27,107
Total inventories $ 118,722 $ 120,925