Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment, Net

Property and equipment, net, are stated at cost, subject to review of impairment, and depreciated using the straight-line method over the estimated useful lives of the assets as follows:

Building	39 years
Computer equipment and software	3-5 years
Furniture and fixtures	3-7 years
Leasehold and other improvements	shorter of the lease term or estimated useful life

Property and equipment, net consists of the following (in thousands):

	December 31,
	2018			2017
Computer equipment	$	493,536		$	326,378
Computer software	58,303			46,413
Leasehold and other improvements	74,721			56,232
Furniture and fixtures	42,551			38,789
Building	6,551			7,084
Construction in progress	10,167			5,341
	685,829			480,237
Less: Accumulated depreciation	(338,613		)	(235,113		)
Total property and equipment, net	$	347,216		$	245,124