Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue
Product	$ 62,393	$ 65,028	$ 50,322
Service	40,105	35,929	29,181
Total revenue	102,498	100,957	79,503
Cost of revenue
Product	21,714	21,551	17,465
Service	16,595	15,070	14,042
Total cost of revenue	38,309	36,621	31,507
Gross profit	64,189	64,336	47,996
Operating expenses
Research and development	14,915	11,618	9,335
Sales and marketing	44,928	33,432	28,151
General and administrative	14,906	14,390	11,316
Total operating expenses	74,749	59,440	48,802
(Loss) income from operations	(10,560)	4,896	(806)
Interest income	257	171	17
Interest expense	0	(84)	(332)
Other (expense) income, net	(53)	(1,463)	(1,073)
(Loss) income before income taxes	(10,356)	3,520	(2,194)
Provision for income taxes	(109)	(627)	(285)
Net (loss) income	(10,465)	2,893	(2,479)
Less: undistributed earnings attributable to participating securities	0	1,366	0
Net (loss) income attributable to common stockholders	$ (10,465)	$ 1,527	$ (2,479)
Net (loss) income per share attributable to common stockholders
Basic and diluted	$ (0.43)	$ 0.08	$ (0.74)
Weighted average shares used to compute net income (loss) per share attributable to common stockholders
Basic	24,621	17,979	3,370
Diluted	24,621	20,608	3,370