Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net revenue:
Products	$ 22,454,000	$ 18,042,000	$ 40,410,000	$ 32,745,000
Service	5,023,000	4,521,000	9,490,000	8,889,000
Total net revenue	27,477,000	22,563,000	49,900,000	41,634,000
Cost of revenue:
Products	8,996,000	7,621,000	16,644,000	14,930,000
Service	2,476,000	2,066,000	4,777,000	3,809,000
Total cost of revenue	11,472,000	9,687,000	21,421,000	18,739,000
Gross profit	16,005,000	12,876,000	28,479,000	22,895,000
Operating expenses:
Sales and marketing	10,712,000	9,066,000	19,428,000	17,253,000
Research and development	2,712,000	2,728,000	5,421,000	5,173,000
General and administrative	3,997,000	3,014,000	7,217,000	6,003,000
Total operating expenses	17,421,000	14,808,000	32,066,000	28,429,000
Loss from operations	(1,416,000)	(1,932,000)	(3,587,000)	(5,534,000)
Interest and other income, net	217,000	96,000	361,000	104,000
Loss before income taxes	(1,199,000)	(1,836,000)	(3,226,000)	(5,430,000)
Provision for income taxes	30,000	53,000	54,000	103,000
Net loss	$ (1,229,000)	$ (1,889,000)	$ (3,280,000)	$ (5,533,000)
Net loss per share:
Basic and Diluted (in dollars per share)	$ (0.09)	$ (0.13)	$ (0.25)	$ (0.37)
Weighted-average number of shares used in per share calculations:
Basic and Diluted (in shares)	13,131	14,441	13,071	14,758