Property and Equipment, Net (Tables)

3 Months Ended

Mar. 31, 2018

Property, Plant and Equipment [Abstract]

Components of Property and Equipment

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

	March 31, 2018				December 31, 2017
Computer hardware		$	171,447			$	171,515
Computer software		377,991				376,761
Furniture and equipment		102,919				102,424
Leasehold improvements		150,181				148,764
Other		10,241				9,907
Property and equipment, cost		812,779				809,371
Accumulated depreciation		(675,942		)		(664,484		)
Property and equipment, net		$	136,837			$	144,887