Consolidated balance sheet components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 32,132	$ 30,832
Less accumulated depreciation and amortization	(24,316)	(20,945)
Property and equipment, net	7,816	9,887
Computers and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	7,843	6,798
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	4,843	4,701
Purchased software
Property, Plant and Equipment [Line Items]
Total property and equipment	383	383
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	19,045	18,932
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 18	$ 18