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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Products	$ 39,389	$ 35,275	$ 111,195	$ 110,446
Services	22,030	19,793	64,199	55,556
Total revenue	61,419	55,068	175,394	166,002
Cost of revenue:
Products	9,119	8,795	26,973	27,297
Services	4,640	4,153	13,623	13,087
Total cost of revenue	13,759	12,948	40,596	40,384
Gross profit	47,660	42,120	134,798	125,618
Operating expenses:
Sales and marketing	26,930	24,331	78,754	77,872
Research and development	15,997	15,968	49,529	45,231
General and administrative	6,878	6,305	21,028	20,196
Litigation and settlement expense	0	66	0	2,059
Total operating expenses	49,805	46,670	149,311	145,358
Loss from operations	(2,145)	(4,550)	(14,513)	(19,740)
Non-operating income (expense):
Interest expense	(20)	(145)	(128)	(397)
Interest and other income (expense), net	(37)	309	779	1,544
Total non-operating income (expense), net	(57)	164	651	1,147
Loss before income taxes	(2,202)	(4,386)	(13,862)	(18,593)
Provision for income taxes	454	298	963	561
Net loss	$ (2,656)	$ (4,684)	$ (14,825)	$ (19,154)
Net loss per share:
Basic and diluted (in dollars per share)	$ (0.04)	$ (0.07)	$ (0.21)	$ (0.29)
Weighted-average shares used in computing net loss per share:
Basic and diluted (in shares)	70,705	66,260	69,688	65,146

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