Condensed Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Sales Revenue, Goods, Net	$ 451	$ 1,220
Service	4,380	5,491
Total revenues	4,831	6,711
Cost of revenues:
Software licenses and appliances	335	494
Service	1,777	2,090
Total cost of revenues	2,112	2,584
Gross profit	2,719	4,127
Operating expenses:
Research and development	1,903	2,109
Sales and marketing	2,180	2,451
General and administrative	2,181	2,460
Amortization of purchased intangibles	229	223
Total operating expenses	6,493	7,243
Operating loss	(3,774)	(3,116)
Other income (expense):
Interest income (expense), net	(844)	(317)
Change in fair value of warrant liability	387	(78)
Other, net	(387)	(55)
Total other expense, net	(844)	(450)
Loss before income taxes	(4,618)	(3,566)
Income tax benefit	(88)	(4)
Net loss	$ (4,530)	$ (3,562)
Loss per share, basic and diluted	$ (0.48)	$ (0.39)
Weighted average number of shares outstanding, basic and diluted	9,370	9,245