Consolidated balance sheet components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 36,987	$ 34,258
Less accumulated depreciation and amortization	(30,222)	(29,724)
Property and equipment, net	6,765	4,534
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	22,252	19,064
Computers and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	8,883	8,317
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	5,417	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	$ 52	$ 1,757