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EARNING (LOSS) PER SHARE (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Common stock equivalents (in shares)                 21,660,400 18,022,188 8,173,464
Net Loss (Numerator)                 $ (9,732,399) $ (7,482,636) $ (4,767,697)
Shares (Denominator) (in shares)                 89,552,788 74,568,658 68,396,770
Per-Share Amount (in dollars per share) $ (0.04) $ (0.03) $ (0.02) $ (0.02) $ (0.02) $ (0.03) $ (0.03) $ (0.02) $ (0.11) $ (0.1) $ (0.07)
Stock Options [Member]
                     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Common stock equivalents (in shares)                 15,455,470 11,598,411 7,593,277
Warrants [Member]
                     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Common stock equivalents (in shares)                 6,204,930 6,423,777 580,187