Property and Equipment, Net (Tables)

9 Months Ended

Sep. 30, 2018

Property, Plant and Equipment [Abstract]

Components of Property and Equipment

Property and equipment consisted of the following (in thousands):

	September 30, 2018				December 31, 2017
Computer hardware		$	173,082			$	171,515
Computer software		379,605				376,761
Furniture and equipment		105,123				102,424
Leasehold improvements		154,272				148,764
Other		10,289				9,907
Property and equipment, cost		822,371				809,371
Accumulated depreciation		(697,196		)		(664,484		)
Property and equipment, net		$	125,175			$	144,887