Consolidated Balance Sheet Components - Schedule of Property, Equipment and Software, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Total property, equipment, and software	$ 83,738	$ 67,158
Less accumulated depreciation and amortization	(54,039)	(40,062)
Property, equipment, and software, net	29,699	27,096
Internal-use software and website development
Property Plant And Equipment [Line Items]
Total property, equipment, and software	68,746	53,215
Computer equipment and purchased software
Property Plant And Equipment [Line Items]
Total property, equipment, and software	5,310	4,662
Leasehold improvements
Property Plant And Equipment [Line Items]
Total property, equipment, and software	6,923	6,567
Furniture and fixtures
Property Plant And Equipment [Line Items]
Total property, equipment, and software	$ 2,759	$ 2,714