Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statements Of Operations [Abstract]
Net revenues	$ 548	$ 1,164
Cost of revenues	16	249
Gross margin	532	915
Operating expenses:
Product research and development	1,634	687
Sales and marketing	805	799
General and administrative	1,652	995
Total operating expenses	4,091	2,481
Loss before provision for income taxes	(3,559)	(1,566)
Provision for income taxes	11	22
Net loss	$ (3,570)	$ (1,588)
Loss per common share:
Basic and diluted loss per share	$ (0.11)	$ (0.05)
Basic and diluted - weighted average number of common shares outstanding	33,511	32,809