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FAIR VALUE (Details 2) (Purchase Agreement, Aspire Capital Fund, LLC, USD $) In Millions, except Share data, unless otherwise specified | 0 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Nov. 14, 2013 | Sep. 30, 2014 | Dec. 31, 2013
Purchase Agreement | Aspire Capital Fund, LLC |  |  |
Fair value measurements |  |  |
Number of shares issued under purchase agreement | 511,509 |  |
Purchase price for shares issued under purchase agreement | $ 2.0 |  |
Shares committed to purchase | 3,042,038 |  |
Period of common stock purchase agreement | 2 years |  |
Fair value of financial instrument | 0.5 | 0.3 | 0.4
Decrease in the fair value of the Purchase Agreement |  | $ 0.1 |

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