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Fixed Assets, Net - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 84,115	$ 79,466	$ 71,495
Impairment charges	7,000	4,500	1,100
Leasehold Improvements and Other Fixed Assets [Member]
Property, Plant and Equipment [Line Items]
Asset retirement obligations	5,900	6,400
Occupancy and Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation expense	24,100	21,500	19,500
Software development costs capitalized	54,000	48,800	49,900
Amortization of software development costs	$ 31,800	$ 28,600	$ 24,700

X

- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Additions made to capitalized computer software costs during the period.

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