Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 19,512	$ 9,361
Less: Accumulated depreciation and amortization	(5,084)	(2,643)
Property and equipment, net	14,428	6,718
Computers and Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	4,541	2,640
Furniture And Fixtures [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,322	1,360
Software [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	26	26
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	459	136
Internal-use Software [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	8,024	4,016
Construction in Progress [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 5,140	$ 1,183

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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