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Balance Sheet Components - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Schedule Of Investments [Abstract]    
Raw materials $ 3,308 $ 2,303
Work-in-progress 9,661 8,114
Finished goods 7,795 6,113
Total inventories $ 20,764 $ 16,530