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Stockholders' Equity (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended | 185 Months Ended | 194 Months Ended
--- | --- | --- | ---
Dec. 31, 2010 | Dec. 31, 2011 | Sep. 30, 2012
Common shares issued: |  |  |
Deemed dividends recorded | $ 3,515 | $ 3,515 | $ 3,515
Preferred stock |  |  |
Conversion of Convertible Preferred Stock |  |  |
Preferred shares exchanged (in shares) | 833,671 | 1,776,858 | 1,776,858
Common shares issued: |  |  |
Deemed dividends recorded | $ 3,500 |  |
Common stock |  |  |
Common shares issued: |  |  |
At stated convertible option (in shares) | 50,679 |  |
Incremental shares issued under the exchange transaction (in shares) | 185,835 |  |
Total common shares issued (in shares) | 236,514 |  |

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