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Segment and Geographic Information - Schedule of Inventory by Inventory Ownership (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]    
Total inventory $ 31,015 $ 16,530
United States [Member]    
Segment Reporting Information [Line Items]    
Total inventory 11,695 4,715
China [Member]    
Segment Reporting Information [Line Items]    
Total inventory $ 19,320 $ 11,815