Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Components of Property and Equipment

Depreciation expense is computed using the straight-line method over the following useful lives:

Computer hardware	2 to 3 years
Computer software	2 to 5 years
Furniture and equipment	5 years
Leasehold improvements	Term of lease, 5 years maximum

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

	December 31,
	2018			2017
Computer hardware	$	177,237		$	171,515
Computer software	378,734			376,761
Furniture and equipment	107,421			102,424
Leasehold improvements	160,521			148,764
Other	10,319			9,907
Property and equipment, cost	834,232			809,371
Accumulated depreciation	(709,056		)	(664,484		)
Property and equipment, net	$	125,176		$	144,887