Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property and equipment	$ 468,528	$ 442,527
Accumulated depreciation and amortization	(250,851)	(226,381)
Property and equipment, net	217,677	216,146
Developed software
Property Plant And Equipment [Line Items]
Property and equipment	239,276	223,596
Computer equipment
Property Plant And Equipment [Line Items]
Property and equipment	121,337	112,564
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and equipment	74,292	74,092
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment	13,594	13,587
Purchased Software and Digital Assets
Property Plant And Equipment [Line Items]
Property and equipment	19,771	18,432
Construction in progress
Property Plant And Equipment [Line Items]
Property and equipment	$ 258	$ 256

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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