Consolidated balance sheet components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 30,832	$ 25,812
Less accumulated depreciation and amortization	(20,945)	(16,706)
Property and equipment, net	9,887	9,106
Computers and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	6,798	6,171
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	4,701	4,181
Purchased software
Property, Plant and Equipment [Line Items]
Total property and equipment	383	280
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	18,932	15,164
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 18	$ 16