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Balance Sheet Components - Summary of Inventory (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Finished goods $ 2,416 $ 1,702
Work in progress 3,210 2,936
Raw materials 8,095 5,374
Total inventory $ 13,721 $ 10,012