Property and Equipment, Net

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

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



	September 30,			December 31,
	2019			2018
	(in thousands)
Computer equipment	$	108,639		$	93,530
Computer software	26,114			26,030
Furniture, fixtures and equipment	5,966			5,814
Finance leases - right of use asset	3,503			3,503
Scanner appliances	15,564			15,356
Leasehold improvements	16,579			16,439
Total property and equipment	176,365			160,672
Less: accumulated depreciation and amortization	(117,660		)	(99,230		)
Property and equipment, net	$	58,705		$	61,442

Physical scanner appliances and other computer equipment had a net carrying value of $5.0 million and $7.9 million at September 30, 2019 and December 31, 2018, respectively, including assets that had not been placed in service of $0.6 million and $1.8 million, respectively. Depreciation and amortization expense relating to property and equipment, including capitalized leases, was $6.2 million and $6.1 million for the three months ended September 30,

2019 and 2018, respectively, and $18.9 million for each of the nine months ended September 30, 2019 and 2018, respectively. Accumulated depreciation under finance leases was $1.9 million at September 30, 2019.