Property and Equipment

6 Months Ended

Jun. 30, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

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

	June 30,			December 31,
	2017			2016
Computer equipment	$	272,883		$	222,648
Computer software	39,781			32,132
Leasehold improvements	39,836			37,095
Furniture and fixtures	34,746			31,574
Building	7,063			6,379
Construction in progress	7,731			2,535
	402,040			332,363
Less: Accumulated depreciation	(188,539		)	(150,743		)
Total property and equipment, net	$	213,501		$	181,620

Construction in progress consists primarily of leasehold improvements and in-process software development costs. Depreciation expense for the three months ended June 30, 2017 and 2016 was $22.2 million and $16.3 million, respectively, and for the six months ended June 30, 2017 and 2016 was approximately $42.6 million and $30.8 million, respectively.