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CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (UNAUDITED) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]        
Product revenues $ 1,314,000 $ 2,134,000 $ 4,741,000 $ 5,908,000
Cost of product revenues 703,000 942,000 2,588,000 2,893,000
Gross profit 611,000 1,192,000 2,153,000 3,015,000
Development revenues:        
Development, related party 0 0 2,413,000 1,231,000
Research grant and other 2,000 5,000 21,000 19,000
Total development revenues 2,000 5,000 2,434,000 1,250,000
Operating expenses:        
Research and development 3,555,000 2,830,000 9,615,000 8,948,000
Sales and marketing 2,450,000 3,618,000 7,406,000 10,560,000
General and administrative 3,777,000 3,538,000 11,489,000 11,230,000
Change in fair value of warrant liability 863,000 (1,536,000) 1,244,000 (3,714,000)
Change in fair value of option liability 300,000 570,000 490,000 680,000
Total operating expenses 10,945,000 9,020,000 30,244,000 27,704,000
Operating loss (10,332,000) (7,823,000) (25,657,000) (23,439,000)
Other income (expense):        
Interest income 0 3,000 3,000 7,000
Interest expense (857,000) (489,000) (2,582,000) (1,923,000)
Other income (expense), net (17,000) 25,000 (91,000) (36,000)
Equity loss from investment in joint venture (42,000) (51,000) (128,000) (153,000)
Total other income (expense) (916,000) (512,000) (2,798,000) (2,105,000)
Net loss $ (11,248,000) $ (8,335,000) $ (28,455,000) $ (25,544,000)
Basic and diluted net loss per common share (in dollars per share) $ (0.19) $ (0.15) $ (0.49) $ (0.48)
Basic and diluted weighted average common shares (in shares) 58,713,036 53,900,250 58,292,911 52,775,861