Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Net revenue:
Products	$ 14,703,000us-gaap_SalesRevenueGoodsNet	$ 11,752,000us-gaap_SalesRevenueGoodsNet
Service	4,368,000us-gaap_SalesRevenueServicesNet	4,437,000us-gaap_SalesRevenueServicesNet
Total net revenue	19,071,000us-gaap_Revenues	16,189,000us-gaap_Revenues
Cost of revenue:
Products	7,309,000us-gaap_CostOfGoodsSold	5,077,000us-gaap_CostOfGoodsSold
Service	1,743,000us-gaap_CostOfServices	2,226,000us-gaap_CostOfServices
Total cost of revenue	9,052,000us-gaap_CostOfRevenue	7,303,000us-gaap_CostOfRevenue
Gross profit	10,019,000us-gaap_GrossProfit	8,886,000us-gaap_GrossProfit
Operating expenses:
Sales and marketing	8,187,000us-gaap_SellingAndMarketingExpense	7,331,000us-gaap_SellingAndMarketingExpense
Research and development	2,445,000us-gaap_ResearchAndDevelopmentExpense	2,644,000us-gaap_ResearchAndDevelopmentExpense
General and administrative	2,989,000us-gaap_GeneralAndAdministrativeExpense	2,564,000us-gaap_GeneralAndAdministrativeExpense
Total operating expenses	13,621,000us-gaap_OperatingExpenses	12,539,000us-gaap_OperatingExpenses
Loss from operations	(3,602,000)us-gaap_OperatingIncomeLoss	(3,653,000)us-gaap_OperatingIncomeLoss
Interest and other income, net	8,000us-gaap_NonoperatingIncomeExpense	80,000us-gaap_NonoperatingIncomeExpense
Loss before income taxes	(3,594,000)	(3,573,000)
Provision for income taxes	50,000us-gaap_IncomeTaxExpenseBenefit	37,000us-gaap_IncomeTaxExpenseBenefit
Net loss	$ (3,644,000)us-gaap_NetIncomeLoss	$ (3,610,000)us-gaap_NetIncomeLoss
Net loss per share:
Basic and Diluted (in Dollars per share)	$ (0.25)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.26)us-gaap_EarningsPerShareBasicAndDiluted
Weighted-average number of shares used in per share calculations:
Basic and Diluted (in Shares)	14,611	14,021

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