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Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 3,023	$ 3,005
Less: Accumulated depreciation	(1,467)	(1,434)
Property and equipment, net	1,556	1,571
Tools and Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,001	2,173
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	37	37
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	323	282
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	38	38
Construction In Process
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 624	$ 475

X

- Definition

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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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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