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FAIR VALUE (Details 2) (USD $) | 3 Months Ended | 9 Months Ended | 206 Months Ended | 0 Months Ended | 9 Months Ended | 12 Months Ended | 0 Months Ended | 11 Months Ended |  | 0 Months Ended | 9 Months Ended |  | 0 Months Ended | 1 Months Ended | 3 Months Ended | 9 Months Ended |  | 9 Months Ended | 12 Months Ended
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Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Apr. 03, 2013 Celgene Corporation patent | Dec. 14, 2012 Aspire Capital Fund, LLC Common stock | Sep. 30, 2013 Aspire Capital Fund, LLC Common stock | Dec. 31, 2012 Aspire Capital Fund, LLC Common stock | Nov. 14, 2013 Aspire Capital Fund, LLC Common stock Subsequent event | Nov. 15, 2013 Aspire Capital Fund, LLC Common stock Subsequent event | Dec. 14, 2012 Aspire Capital Fund, LLC Maximum Common stock | Mar. 22, 2012 Economic Rights | Sep. 30, 2013 Economic Rights | Dec. 31, 2012 Economic Rights | Mar. 31, 2013 Economic Rights Celgene Corporation | Apr. 30, 2013 Economic Rights Celgene Corporation | Feb. 28, 2007 Warrants | Sep. 30, 2013 Warrants | Sep. 30, 2012 Warrants | Sep. 30, 2013 Warrants | Sep. 30, 2012 Warrants | Dec. 31, 2012 Warrants | Sep. 30, 2013 Warrants Maximum | Dec. 31, 2012 Warrants Maximum
Reconciliation of the beginning and ending balance of Level 3 inputs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the period |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,140,000 |  |  |  |  |  |  |  |  |  |  |
Change in valuation of liability |  |  |  |  |  |  |  |  |  |  |  |  | (570,000) |  |  |  |  | 0 | 1,000 | 0 | 51,000 |  |  |
Movement of valuation of liability from Level 3 to Level 2 |  |  |  |  |  |  |  |  |  |  |  |  | (550,000) |  |  |  |  |  |  |  |  |  |  |
Balance at the end of the period |  |  |  |  |  |  |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |
Number of shares issued under purchase agreement |  |  |  |  |  | 158,982 | 1,455,787 |  | 511,509 | 1,689,317 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price for shares issued under purchase agreement |  |  |  |  |  | 1,000,000 | 6,600,000 |  | 2,000,000 | 7,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional shares committed for sale under agreement |  |  |  |  |  |  |  |  | 3,042,038 |  | 1,455,787 |  |  |  |  |  |  |  |  |  |  |  |  |
Period of common stock purchase agreement |  |  |  |  |  | 2 years |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchase agreement, additional amount committed |  |  |  |  |  |  |  |  | 18,000,000 |  | 19,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued in lieu of commitment fee |  |  |  |  |  | 74,548 |  |  | 166,105 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock purchase agreement |  |  |  | 423,000 |  |  |  | 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount to be paid as percentage of future litigation settlement amount received |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |
Number of patents in litigation sold under the definitive agreement |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
One time payment received under the definitive agreement |  |  |  |  | 5,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount paid to the holders of liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,000 |  |  |  |  |  |  |  |
Fair value of the liability |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000 |  |  |  |  |  |  |  |  |  |
Change in fair value of the derivative | 63,000 | (570,000) | (27,000) | (547,000) |  |  |  |  |  |  |  |  | 600,000 |  |  |  |  |  |  |  |  |  |  |
Actual amount owed as a percentage of one-time payment received |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |
Warrants Liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of the warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,800,000 | $ 0 |  | $ 0 |  | $ 0 |  |
Risk free interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.68% |  |  |  |  |  |  |
Expected volatility (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 85.00% |  |  |  |  |  |  |
Expected dividend yield (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |
Contractual life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |
Expected term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year | 1 year

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