Certain Balance Sheet Components - Property and Equipment, net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 67,350	$ 38,916
Accumulated depreciation and amortization	(29,827)	(20,152)
Property and equipment, net	37,523	18,764
Depreciation and amortization	17,460	10,741	$ 3,853
Capitalized internal-use software costs	25,900	16,400
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,110	8,110
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,415	8,885
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,525	2,597
Internally developed and purchased software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	47,300	19,324
Property, Plant and Equipment
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 11,600	$ 5,400	$ 3,900