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Warrants (Schedule Of Unrealized Gains Losses On Fair Value Of Warrants) (Details) (USD $)
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12 Months Ended | 141 Months Ended | |
|---|---|---|---|
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2012
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| Unrealized gain on fair value of warrants | $ 663,876 | $ 4,778,450 | $ 4,339,981 |
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December 18, 2007 Financing [Member]
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| Unrealized gain on fair value of warrants | 50,722 | ||
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March 20, 2008 Financing [Member]
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| Unrealized gain on fair value of warrants | 92,704 | 160,063 | |
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June 5, 2009 Financing [Member]
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| Unrealized gain 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 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 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 on fair value of warrants | 54,445 | 661,266 | 1,270,889 |
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Warrants To Institutional Investors [Member] | October 23, 2009 Financing [Member]
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| Unrealized gain on fair value of warrants | 55,767 | 565,156 | (109,760) |
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Warrants To Institutional Investors [Member] | June 30, 2010 Financing [Member]
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| Unrealized gain on fair value of warrants | 77,600 | 1,017,000 | 1,788,600 |
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Warrants To Institutional Investors [Member] | March 31, 2011 Financing [Member]
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| Unrealized gain on fair value of warrants | 237,667 | 2,282,666 | 2,520,333 |
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Warrants To Institutional Investors [Member] | December 4, 2012 Financing [Member]
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| Unrealized gain on fair value of warrants | 210,210 | 210,210 | |
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Warrants To Placement Agent [Member] | June 5, 2009 Financing [Member]
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| Unrealized gain on fair value of warrants | 5,404 | 60,139 | 104,388 |
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Warrants To Placement Agent [Member] | October 23, 2009 Financing [Member]
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| Unrealized gain on fair value of warrants | 673 | (102,487) | (135,979) |
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Warrants To Placement Agent [Member] | June 30, 2010 Financing [Member]
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| Unrealized gain on fair value of warrants | 2,300 | 108,360 | 180,060 |
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Warrants To Placement Agent [Member] | March 31, 2011 Financing [Member]
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| Unrealized gain on fair value of warrants | 3,938 | 93,646 | 97,584 |
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Warrants To Placement Agent [Member] | December 4, 2012 Financing [Member]
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| Unrealized gain on fair value of warrants | $ 15,872 | $ 15,872 | |