Other Balance Sheet Details - Property and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment	$ 11,530	$ 10,700
Less accumulated depreciation	(2,806)	(1,276)
Property and equipment, net	8,724	9,424
Depreciation	1,500	1,300	$ 200
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment	429	291
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	9,835	9,431
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment	$ 1,266	$ 978

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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