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Balance Sheet Components - Schedule of Inventories (Detail) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Inventory, Net [Abstract]    
Raw materials $ 1,099 $ 794
Work in progress 4,434 2,929
Finished goods 3,321 2,614
Inventories $ 8,854 $ 6,337