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Balance Sheet Details - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Finished goods $ 1,453 $ 3,175
Work in process 6,367 1,685
Raw material 1,862 1,481
Inventory $ 9,682 $ 6,341