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CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) [Abstract]    
Product revenues $ 1,481,000 $ 1,362,000
Cost of product revenues 853,000 842,000
Gross profit 628,000 520,000
Development revenues:    
Development, related party 0 1,231,000
Research grants and other 3,000 4,000
Total development revenues 3,000 1,235,000
Operating expenses:    
Research and development 2,836,000 3,047,000
Sales and marketing 2,376,000 3,226,000
General and administrative 3,924,000 3,544,000
Change in fair value of warrant liability 130,000 3,471,000
Change in fair value of option liability (270,000) (290,000)
Total operating expenses 8,996,000 12,998,000
Operating loss (8,365,000) (11,243,000)
Other income (expense):    
Interest income 2,000 2,000
Interest expense (865,000) (738,000)
Other expense, net (47,000) (47,000)
Equity loss from investment in joint venture (50,000) (46,000)
Total other expense (960,000) (829,000)
Net loss $ (9,325,000) $ (12,072,000)
Basic and diluted net loss per common share (in dollars per share) $ (0.16) $ (0.23)
Basic and diluted weighted average common shares (in shares) 57,484,990 51,994,708