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Inventory - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 71,838 $ 50,657
Work in process 39,521 30,388
Finished goods 197,909 107,819
Total inventory $ 309,268 $ 188,864