Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Dec. 31, 2022
Balance Sheet Components [Line Items]
Property and equipment, gross	$ 15,990	$ 15,467
Less: accumulated depreciation and amortization	(10,615)	(10,425)
Property and equipment, net	5,375	5,042
Computer and Software
Balance Sheet Components [Line Items]
Property and equipment, gross	$ 398	343
Property and equipment, useful life	2 years
Machinery and Equipment
Balance Sheet Components [Line Items]
Property and equipment, gross	$ 667	664
Property and equipment, useful life	3 years
Furniture and Fixtures
Balance Sheet Components [Line Items]
Property and equipment, gross	$ 48	48
Property and equipment, useful life	7 years
Tools and Dies
Balance Sheet Components [Line Items]
Property and equipment, gross	$ 901	900
Property and equipment, useful life	2 years
Construction in Progress
Balance Sheet Components [Line Items]
Property and equipment, gross	$ 88	131
Equipment Under Customer Usage Agreements
Balance Sheet Components [Line Items]
Property and equipment, gross	$ 13,733	13,226
Property and equipment, useful life	5 years
Leasehold Improvements
Balance Sheet Components [Line Items]
Property and equipment, gross	$ 155	$ 155
Property and equipment, useful life, description	Lesser of useful life or lease term

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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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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- Definition

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.

+ References

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- Definition

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.

+ References

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

Line items represent balance sheet components.

+ References

No definition available.

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