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Warrants (Schedule Of Unrealized Gains Losses On Fair Value Of Warrants) (Details) (USD $)
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3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 0 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | 3 Months Ended | 156 Months Ended | |||||||||
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 31, 2014
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Mar. 31, 2013
Exercised and Expired Warrants [Member]
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Mar. 31, 2014
Exercised and Expired Warrants [Member]
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Mar. 31, 2014
Series III Warrants [Member]
June 5, 2009 Financing [Member]
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Mar. 31, 2013
Series III Warrants [Member]
June 5, 2009 Financing [Member]
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Mar. 31, 2014
Series III Warrants [Member]
June 5, 2009 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
October 23, 2009 Financing [Member]
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Mar. 31, 2013
Warrants To Institutional Investors [Member]
October 23, 2009 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
October 23, 2009 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
June 30, 2010 Financing [Member]
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Mar. 31, 2013
Warrants To Institutional Investors [Member]
June 30, 2010 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
June 30, 2010 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
March 31, 2011 Financing [Member]
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Mar. 31, 2013
Warrants To Institutional Investors [Member]
March 31, 2011 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
March 31, 2011 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
December 4, 2012 Financing [Member]
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Mar. 31, 2013
Warrants To Institutional Investors [Member]
December 4, 2012 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
December 4, 2012 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
July 26, 2013 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
July 26, 2013 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
October 16, 2013 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
October 16, 2013 Financing [Member]
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Jan. 21, 2014
Warrants To Institutional Investors [Member]
January 21, 2014 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
January 21, 2014 Financing [Member]
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Mar. 31, 2014
Warrants To Placement Agent [Member]
June 5, 2009 Financing [Member]
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Mar. 31, 2013
Warrants To Placement Agent [Member]
June 5, 2009 Financing [Member]
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Mar. 31, 2014
Warrants To Placement Agent [Member]
June 5, 2009 Financing [Member]
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Mar. 31, 2014
Warrants To Placement Agent [Member]
December 4, 2012 Financing [Member]
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Mar. 31, 2013
Warrants To Placement Agent [Member]
December 4, 2012 Financing [Member]
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Mar. 31, 2014
Warrants To Placement Agent [Member]
December 4, 2012 Financing [Member]
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Mar. 31, 2014
Warrants To Placement Agent [Member]
July 26, 2013 Financing [Member]
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Mar. 31, 2014
Warrants To Placement Agent [Member]
July 26, 2013 Financing [Member]
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Mar. 31, 2014
Warrants To Placement Agent [Member]
October 16, 2013 Financing [Member]
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Mar. 31, 2014
Warrants To Placement Agent [Member]
October 16, 2013 Financing [Member]
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| Unrealized (loss)/gain on fair value of warrants | $ (11,660,524) | $ 368,902 | $ (8,686,197) | $ 144 | $ (1,460,407) | $ (80,878) | $ 30,022 | $ 1,225,311 | $ (593,950) | $ 41,395 | $ (649,945) | $ (60,990) | $ 8,800 | $ 1,739,800 | $ (1,473,973) | $ 96,666 | $ 1,041,333 | $ (4,225,702) | $ 166,980 | $ (5,613,687) | $ (2,200,617) | $ (2,053,055) | $ (2,039,976) | $ (2,021,237) | $ 68,095 | $ 68,095 | $ (8,483) | $ 2,855 | $ 99,393 | $ (533,250) | $ 22,040 | $ (592,440) | $ (293,538) | $ (266,857) | $ (217,262) | $ (202,501) |