BALANCE SHEET COMPONENTS - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 57,749	$ 57,391
Less: accumulated depreciation and amortization	(38,710)	(37,750)
Property and equipment, net	19,039	19,641
Prototype
Property, Plant and Equipment [Line Items]
Property and equipment, gross	17,641	17,641
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,068	19,068
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,365	15,365
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,511	1,511
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	$ 2,775	$ 2,417

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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