Property and Equipment

3 Months Ended

Mar. 31, 2016

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

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

	As of March 31, 2016			As of December 31, 2015
Computer equipment and software	$	132,862		$	120,886
Leasehold improvements	43,901			41,626
Furniture and fixtures	14,314			13,470
Machinery and equipment	447			447
Total property and equipment	191,524			176,429
Less: accumulated depreciation	(110,200		)	(98,061		)
Total property and equipment, net	$	81,324		$	78,368

Depreciation and amortization expense related to property and equipment and demonstration units during the three months ended March 31, 2016 and 2015 was $14.1 million and $14.3 million, respectively.