Consolidated balance sheet components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 38,008	$ 34,258
Less accumulated depreciation and amortization	(30,822)	(29,724)
Property and equipment, net	7,186	4,534
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	22,622	19,064
Computers and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	9,112	8,317
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	5,813	4,737
Purchased software
Property, Plant and Equipment [Line Items]
Total property and equipment	383	383
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 78	$ 1,757