Condensed Consolidated Statements of Operations (unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues:
Product sales	$ 1,861	$ 1,724	$ 3,371	$ 3,085
Research and development income	564	268	872	420
Licensing, royalty and other income	12	32	26	93
Total revenues	2,437	2,024	4,269	3,598
Cost and expenses:
Cost of sales	1,683	1,393	3,049	2,634
Selling, general and administrative expenses	615	758	1,273	1,691
Product development and research expenses	644	752	1,116	1,131
Total costs and expenses	2,942	2,903	5,438	5,456
Operating loss	(505)	(879)	(1,169)	(1,858)
Interest expense and other, net	(83)	(68)	(154)	(122)
Net loss	$ (588)	$ (947)	$ (1,323)	$ (1,980)
Basic and diluted loss per share (in Dollars per share)	$ (0.01)	$ (0.02)	$ (0.03)	$ (0.05)
Weighted Average of Common Stock and Common Stock Equivalents Outstanding
Basic and diluted (in Shares)	39,522,868	39,482,968	39,511,745	39,398,497