Condensed Consolidated Statements of Operations (Unaudited) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net revenue:
Products	$ 13,171,000	$ 15,053,000	$ 24,923,000	$ 26,576,000
Service	4,553,000	4,507,000	8,990,000	8,951,000
Total net revenue	17,724,000	19,560,000	33,913,000	35,527,000
Cost of revenue:
Products	5,917,000	6,151,000	10,994,000	11,573,000
Service	1,931,000	2,291,000	4,157,000	4,286,000
Total cost of revenue	7,848,000	8,442,000	15,151,000	15,859,000
Gross profit	9,876,000	11,118,000	18,762,000	19,668,000
Operating expenses:
Sales and marketing	7,754,000	7,170,000	15,085,000	13,626,000
Research and development	2,622,000	2,217,000	5,266,000	4,338,000
General and administrative	2,335,000	2,354,000	4,899,000	4,643,000
Total operating expenses	12,711,000	11,741,000	25,250,000	22,607,000
Loss from operations	(2,835,000)	(623,000)	(6,488,000)	(2,939,000)
Interest and other income, net	138,000	75,000	218,000	210,000
Loss before income taxes	(2,697,000)	(548,000)	(6,270,000)	(2,729,000)
Provision for income taxes	44,000	90,000	81,000	72,000
Net loss	$ (2,741,000)	$ (638,000)	$ (6,351,000)	$ (2,801,000)
Net loss per share:
Basic and Diluted (in Dollars per share)	$ (0.19)	$ (0.04)	$ (0.45)	$ (0.19)
Weighted-average number of shares used in per share calculations:
Basic and Diluted (in Shares)	14,231	14,723	14,127	14,566