Property and Equipment, Net - Schedule of Major Classes of Property and Equipment (Detail) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		$ 204,746	$ 158,343
Less: Accumulated depreciation		(68,890)	(42,480)
Property and equipment, Net		135,856	115,863
Computer Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		53,587	28,528
Purchased Software
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		10,179	10,179
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		22,156	17,971
Construction in Progress
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	[1]	6,810	13,862
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, Gross		$ 112,014	$ 87,803

[1] Includes leasehold improvement projects which are not yet ready for intended use.