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Shareholders' Equity Warrants Activity (Details) (USD $) | 0 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 18, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Warrant Activity [Line Items] |  |  |  |
Common Stock Warrants, Shares |  | 37,389,825 | 21,843,507 | 19,838,802
Weighted Average Exercise Price, Warrants Outstanding |  | 2.35 | 2.62 | 3
Warrants Granted |  | 15,993,947 | 5,792,896 |
Weighted Average Exercise Price, Warrants Granted |  | $ 2.09 | $ 1.99 |
Warrants Exercised |  | 0 | (2,025,000) |
Weighted Average Exercise Price, Warrants Exercised |  | $ 0 | $ 1.46 |
Warrants Expired |  | (448,000) | (1,613,191) |
Weighted Average Exercise Price, Warrants Expired |  | $ 6.18 | $ 6.54 |
Warrants Canceled | 640,000 | 0 | (150,000) |
Weighted Average Exercise Price, Warrants Canceled |  | $ 0 | $ 2.78 |
Weighted Average Remaining Contractual Term, Warrants Outstanding |  | 3.87 |  |
Aggregate Intrinsic Value, Warrants Outstanding |  | $ 0 |  |

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