Balance Sheet Components - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,694	$ 3,961
Less: Accumulated depreciation and amortization	(2,332)	(1,550)
Property and equipment, net	2,844	2,734
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	726	657
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,699	1,295
Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	226	18
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,043	1,991
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 482	$ 323

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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