Property and Equipment, Net

3 Months Ended

Mar. 31, 2018

Property, Plant and Equipment [Abstract]

Property and equipment, net, which includes assets under capital lease, consists of the following:



	March 31,			December 31,
	2018			2017
	(in thousands)
Computer equipment	$	80,215		$	77,883
Computer software	21,176			20,447
Furniture, fixtures and equipment	5,408			5,075
Assets under capital lease	3,503			—
Scanner appliances	15,010			14,325
Leasehold improvements	16,348			16,067
Total property and equipment	141,660			133,797
Less: accumulated depreciation and amortization	(80,964		)	(75,240		)
Property and equipment, net	$	60,696		$	58,557

Physical scanner appliances and other computer equipment that are or will be subject to leases by customers have a net carrying value of $6.9 million and $6.8 million at March 31, 2018 and December 31, 2017, respectively, including assets that have not been placed in service of $1.0 million and $0.9 million, respectively. Depreciation and amortization expense relating to property and equipment, including capitalized leases, was $6.4 million and $4.7 million for the three months ended March 31, 2018 and 2017, respectively. Accumulated depreciation under capital leases was $0.2 million at March 31, 2018.