Property and Equipment, Net (Tables)

9 Months Ended

Sep. 30, 2013

Property, Plant and Equipment [Abstract]

Property and equipment

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

	September 30,			December 31,
	2013			2012
	(in thousands)
Computer equipment	$	25,613		$	18,798
Computer software	9,139			6,327
Furniture, fixtures and equipment	1,758			1,545
Scanner appliances	16,646			16,470
Leasehold improvements	1,876			1,672
Total property and equipment	55,032			44,812
Less: accumulated depreciation and amortization	(32,539		)	(26,664		)
Property and equipment, net	$	22,493		$	18,148