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FAIR VALUE (Details 2) (USD $) | 3 Months Ended | 212 Months Ended | 0 Months Ended | 3 Months Ended |  | 0 Months Ended | 1 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 | Mar. 31, 2014 | Nov. 14, 2013 Purchase Agreement Aspire Capital Fund, LLC | Mar. 31, 2014 Purchase Agreement Aspire Capital Fund, LLC | Dec. 31, 2013 Purchase Agreement Aspire Capital Fund, LLC | Apr. 03, 2013 Definitive Agreement Celgene Corporation | Mar. 22, 2012 Economic Rights | Apr. 30, 2013 Economic Rights Definitive Agreement | Mar. 31, 2013 Economic Rights Definitive Agreement
Fair value measurements |  |  |  |  |  |  |  |  |
Number of shares issued under purchase agreement |  |  | 511,509 |  |  |  |  |  |
Purchase price for shares issued under purchase agreement |  |  | $ 2,000,000 |  |  |  |  |  |
Shares committed to purchase |  |  | 3,042,038 |  |  |  |  |  |
Period of common stock purchase agreement |  |  | 2 years |  |  |  |  |  |
Fair value of financial instrument |  |  | 500,000 | 400,000 | 400,000 |  |  |  |
Decrease in the fair value of the Purchase Agreement |  |  |  | 47,000 |  |  |  |  |
Amount to be paid as percentage of future litigation settlement amount received |  |  |  |  |  |  | 10.00% |  |
One-time payment received for patent related uses |  |  |  |  |  | 5,500,000 |  |  |
Payment made to economic right holder |  |  |  |  |  |  |  | 600,000 |
Change in valuation of Economic Rights | $ 570,000 | $ 547,000 |  |  |  |  |  |  | $ 600,000

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