Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Revenues
Product sales	$ 197	$ 2,366
License fees	60	60
Commercial collaborations		2
Contracts and grants		123
Total revenues	257	2,551
Cost of goods sold
Product	406	2,611
Contracts and grants		128
Warranty and inventory reserves	14	46
Total cost of goods sold	420	2,785
Gross loss	(163)	(234)
Operating expenses
Research and development	1,833	2,056
Sales and marketing	920	1,051
General and administrative	1,749	2,171
Depreciation and amortization	269	375
Loss on disposal of assets		16
Total operating expenses	4,771	5,669
Loss from operations	(4,934)	(5,903)
Other income (expense)
Interest expense	(2)	(7)
Realized loss on investment		(1)
Change in fair value of warrant liabilities	77
Total other income (expense), net	75	(8)
Net loss	$ (4,859)	$ (5,911)
Loss per common share - basic and diluted (in Dollars per share)	$ (0.07)	$ (0.22)
Weighted average shares - basic and diluted (in Shares)	69,452,487	26,844,583