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	$ 376	$ 174	$ 573	$ 2,540
License fees	60	60	120	120
Commercial collaborations	18	78	18	80
Contracts and grants		164		287
Total revenues	454	476	711	3,027
Cost of goods sold
Product	613	314	1,019	2,925
Commercial collaborations		197		197
Contracts and grants		168		296
Warranty and inventory reserves	461	12	475	58
Total cost of goods sold	1,074	691	1,494	3,476
Gross loss	(620)	(215)	(783)	(449)
Operating expenses
Research and development	1,789	1,284	3,622	3,340
Sales and marketing	925	913	1,845	1,964
General and administrative	1,425	1,204	3,174	3,376
Depreciation and amortization	250	379	519	754
Loss on disposal of assets				16
Total operating expenses	4,389	3,780	9,160	9,450
Loss from operations	(5,009)	(3,995)	(9,943)	(9,899)
Other (expense) income
Interest income (expense), net	32	(52)	30	(59)
Change in market value of warrants	102	1,022	179	1,022
Total other income, net	134	970	209	963
Net loss	$ (4,875)	$ (3,025)	$ (9,734)	$ (8,936)
Loss per common share - basic and diluted (in Dollars per share)	$ (0.07)	$ (0.10)	$ (0.14)	$ (0.31)
Weighted average shares - basic and diluted (in Shares)	69,452,487	30,424,730	69,452,487	28,644,546