Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 57,391	$ 53,600
Less: accumulated depreciation and amortization	(37,750)	(33,358)
Property and equipment, net	19,641	20,242
Prototype
Property Plant And Equipment [Line Items]
Property and equipment, gross	17,641	17,730
Machine and equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	19,068	17,701
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	15,365	14,088
Furniture and fixture
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,511	1,295
Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,389	1,389
Construction in progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,417	$ 1,397

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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