Consolidated balance sheet components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 32,097	$ 31,922
Less accumulated depreciation and amortization	(28,029)	(27,483)
Property and equipment, net	4,068	4,439
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	19,064	19,064
Computers and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	7,945	7,770
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	4,705	4,705
Purchased software
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 383	$ 383