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Inventory - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 15,223 $ 15,926
Work-in-process 61,867 53,973
Finished goods 16,555 17,962
Total Inventory $ 93,645 $ 87,861