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Inventories - Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 27,285 $ 42,738
Work-in-process 5,503 3,435
Finished goods 27,473 37,109
Inventories $ 60,261 $ 83,282