Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property and equipment

Property and equipment consist of the following:

	December 31,
	2018			2017
	(in thousands)
Computer equipment	$	93,530		$	77,883
Computer software	26,030			20,447
Scanner appliances	15,356			14,325
Furniture, fixtures and equipment	5,814			5,075
Equipment under capital lease	3,503			—
Leasehold improvements	16,439			16,067
Total property and equipment	160,672			133,797
Less: accumulated depreciation and amortization	(99,230		)	(75,240		)
Property and equipment, net	$	61,442		$	58,557