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Warrants (Schedule Of Unrealized Gains Losses On Fair Value Of Warrants) (Details) (USD $)
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3 Months Ended | 144 Months Ended | |
|---|---|---|---|
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2013
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| Unrealized gain (loss) on fair value of warrants | $ 368,902 | $ (261,861) | $ 4,708,883 |
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December 18, 2007 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 50,722 | ||
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March 20, 2008 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 160,063 | ||
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June 5, 2009 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | (328,937) | ||
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Series I Warrants [Member] | June 5, 2009 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 707,111 | ||
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Series II Warrants [Member] | June 5, 2009 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | (2,191,175) | ||
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Series III Warrants [Member] | June 5, 2009 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 30,022 | (14,622) | 1,300,911 |
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Warrants To Institutional Investors [Member] | October 23, 2009 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 41,395 | (42,131) | (68,365) |
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Warrants To Institutional Investors [Member] | June 30, 2010 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 8,800 | (17,800) | 1,797,400 |
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Warrants To Institutional Investors [Member] | March 31, 2011 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 96,666 | (184,333) | 2,616,999 |
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Warrants To Institutional Investors [Member] | December 4, 2012 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 166,980 | 377,190 | |
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Warrants To Placement Agent [Member] | June 5, 2009 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 2,855 | (1,665) | 107,243 |
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Warrants To Placement Agent [Member] | October 23, 2009 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 41 | (728) | (135,938) |
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Warrants To Placement Agent [Member] | June 30, 2010 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 20 | (20) | 180,080 |
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Warrants To Placement Agent [Member] | March 31, 2011 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | 83 | (562) | 97,667 |
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Warrants To Placement Agent [Member] | December 4, 2012 Financing [Member]
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| Unrealized gain (loss) on fair value of warrants | $ 22,040 | $ 37,912 | |