Balance Sheet Components -Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 9,177		$ 9,026
Less: Accumulated depreciation	(8,017)		(7,974)
Property and equipment, net	1,160		1,052
Depreciation	49	$ 45
Machinery, equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,810		4,659
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,932		1,932
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,435		$ 2,435

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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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