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Loss Per Share (Details) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Stock Options [Member] |  |
Class of Stock [Line Items] |  |
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares | 21,686,680 | 17,143,505
Warrants [Member] |  |
Class of Stock [Line Items] |  |
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares | 55,287,611 | 37,389,825
Series E Preferred Stock [Member] |  |
Class of Stock [Line Items] |  |
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares | 0 | 3,989,669
Restricted Stock [Member] |  |
Class of Stock [Line Items] |  |
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares | 342,500 | 976,668

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