Other balance sheet components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation	$ (105,512)	$ (89,746)
Property and equipment, net	66,451	45,624
Total property and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	152,153	132,173
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	95,309	78,136
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment	23,752	22,630
Computer and network equipment
Property, Plant and Equipment [Line Items]
Property and equipment	33,092	31,407
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment	$ 19,810	$ 3,197