Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statements of Operations [Abstract]
Net revenues	$ 1,076	$ 1,679	$ 2,708	$ 4,817
Cost of revenues	765	337	1,443	1,080
Gross margin	311	1,342	1,265	3,737
Operating expenses:
Product research and development	2,211	1,451	5,286	3,616
Sales and marketing	406	920	2,104	3,437
General and administrative	972	1,086	3,813	3,772
Total operating expenses	3,589	3,457	11,203	10,825
Loss before provision for income taxes	(3,278)	(2,115)	(9,938)	(7,088)
Provision for income taxes	65	29	95	71
Net loss	$ (3,343)	$ (2,144)	$ (10,033)	$ (7,159)
Loss per common share:
Basic and diluted loss per share	$ (0.09)	$ (0.06)	$ (0.29)	$ (0.22)
Basic and diluted - weighted average number of common shares outstanding	35,437	33,021	34,366	32,934