Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 232,560	$ 212,740
Accumulated depreciation	(147,983)	(137,665)
Property and equipment, net	84,577	75,075
Depreciation expense for property and equipment	26,200	24,400	$ 26,700
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	88,623	77,921
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,754	806
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	34,865	33,827
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 106,318	$ 100,186

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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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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