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CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) [Abstract]        
Product revenues $ 1,616,000 $ 1,314,000 $ 4,416,000 $ 4,741,000
Cost of product revenues 931,000 703,000 2,296,000 2,588,000
Gross profit 685,000 611,000 2,120,000 2,153,000
Development revenues:        
Development, related party 0 0 638,000 2,413,000
Development revenue 0 0 1,179,000 0
Government contracts and other 1,095,000 2,000 2,503,000 21,000
Total development revenues 1,095,000 2,000 4,320,000 2,434,000
Operating expenses:        
Research and development 4,123,000 3,555,000 11,992,000 9,615,000
Sales and marketing 1,786,000 2,450,000 6,453,000 7,406,000
General and administrative 4,332,000 3,777,000 12,225,000 11,489,000
Change in fair value of warrant liability 0 863,000 (418,000) 1,244,000
Change in fair value of option liability 0 300,000 (2,250,000) 490,000
Total operating expenses 10,241,000 10,945,000 28,002,000 30,244,000
Operating loss (8,461,000) (10,332,000) (21,562,000) (25,657,000)
Other income (expense):        
Loss on asset disposal 0 0 (257,000) 0
Loss on debt extinguishment 0 0 (708,000) 0
Interest income 1,000 0 2,000 3,000
Interest expense (1,094,000) (857,000) (2,456,000) (2,582,000)
Other income (expense), net (96,000) (17,000) (392,000) (91,000)
Gain on Puregraft divestiture 4,392,000   4,392,000 0
Gain on previously held equity interest in Joint Venture 0 0 4,892,000 0
Equity loss from investment in joint venture 0 (42,000) (48,000) (128,000)
Total other income (expense) 3,203,000 (916,000) 5,425,000 (2,798,000)
Net loss (5,258,000) (11,248,000) (16,137,000) (28,455,000)
Other comprehensive income (loss) - foreign currency translation adjustments (108,000) 0 (142,000) 0
Net comprehensive loss $ (5,366,000) $ (11,248,000) $ (16,279,000) $ (28,455,000)
Basic and diluted net loss per common share (in dollars per share) $ (0.08) $ (0.19) $ (0.24) $ (0.49)
Basic and diluted weighted average common shares (in shares) 67,248,384 58,713,036 67,147,584 58,292,911