Property and Equipment, net - Detail of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment	$ 333,649	$ 309,937
Less: accumulated amortization and depreciation	(119,094)	(113,785)
Property and equipment, net	214,555	196,152
Website development costs
Property, Plant and Equipment [Line Items]
Property and equipment	175,230	95,466
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	107,017	110,280
Office equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment	25,151	39,607
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment	19,122	20,433
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property and equipment	$ 7,129	$ 44,151

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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