Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statements of Operations [Abstract]
Net revenues	$ 1,126	$ 1,076	$ 3,005	$ 2,708
Cost of revenues	422	765	1,040	1,443
Gross margin	704	311	1,965	1,265
Operating expenses:
Product research and development	1,767	2,211	5,293	5,286
Sales and marketing	725	406	2,523	2,104
General and administrative	1,457	972	5,275	3,813
Total operating expenses	3,949	3,589	13,091	11,203
Loss before provision for income taxes	(3,245)	(3,278)	(11,126)	(9,938)
Provision for income taxes		65	1	95
Net loss	$ (3,245)	$ (3,343)	$ (11,127)	$ (10,033)
Loss per common share:
Basic and diluted loss per share	$ (0.08)	$ (0.09)	$ (0.28)	$ (0.29)
Basic and diluted - weighted average number of common shares outstanding	40,455	35,437	39,219	34,366