Consolidated balance sheet components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 38,759	$ 34,258
Less accumulated depreciation and amortization	(32,065)	(29,724)
Property and equipment, net	6,694	4,534
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	22,828	19,064
Computers and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	9,530	8,317
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	6,013	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	$ 5	$ 1,757