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Warrants (Schedule Of Fair Value Of Warrants Issued) (Details) (USD $)
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Mar. 31, 2014
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Jan. 21, 2014
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Dec. 31, 2013
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Mar. 31, 2011
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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Dec. 31, 2013
Series III Warrants [Member]
June 5, 2009 Financing [Member]
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Jun. 05, 2009
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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Dec. 31, 2013
Warrants To Institutional Investors [Member]
October 23, 2009 Financing [Member]
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Oct. 23, 2009
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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Dec. 31, 2013
Warrants To Institutional Investors [Member]
June 30, 2010 Financing [Member]
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Jun. 30, 2010
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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Dec. 31, 2013
Warrants To Institutional Investors [Member]
March 31, 2011 Financing [Member]
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Mar. 31, 2011
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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Dec. 31, 2013
Warrants To Institutional Investors [Member]
December 4, 2012 Financing [Member]
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Dec. 04, 2012
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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Dec. 31, 2013
Warrants To Institutional Investors [Member]
July 26, 2013 Financing [Member]
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Jul. 26, 2013
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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Dec. 31, 2013
Warrants To Institutional Investors [Member]
October 16, 2013 Financing [Member]
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Oct. 16, 2013
Warrants To Institutional Investors [Member]
October 16, 2013 Financing [Member]
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Mar. 31, 2014
Warrants To Institutional Investors [Member]
January 21, 2014 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 Placement Agent [Member]
June 5, 2009 Financing [Member]
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Dec. 31, 2013
Warrants To Placement Agent [Member]
June 5, 2009 Financing [Member]
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Jun. 05, 2009
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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Dec. 31, 2013
Warrants To Placement Agent [Member]
December 4, 2012 Financing [Member]
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Dec. 04, 2012
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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Dec. 31, 2013
Warrants To Placement Agent [Member]
July 26, 2013 Financing [Member]
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Jul. 26, 2013
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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Dec. 31, 2013
Warrants To Placement Agent [Member]
October 16, 2013 Financing [Member]
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Oct. 16, 2013
Warrants To Placement Agent [Member]
October 16, 2013 Financing [Member]
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fair value | $ 11,290,566 | $ 19,947,074 | $ 5,034,058 | $ 3,985,570 | $ 80,889 | $ 11 | $ 1,306,200 | $ 316,159 | $ 19,689 | $ 1,012,934 | $ 61,000 | $ 10 | $ 1,800,800 | $ 1,785,333 | $ 311,360 | $ 2,826,666 | $ 195,651 | $ 2,124,444 | $ 2,474,120 | $ 1,716,200 | $ 1,148,390 | $ 1,295,952 | $ 3,091,430 | $ 1,051,454 | $ 1,070,193 | $ 3,623,334 | $ 3,691,429 | $ 8,484 | $ 1 | $ 122,257 | $ 32,964 | $ 222,286 | $ 163,096 | $ 89,253 | $ 83,808 | $ 110,489 | $ 289,869 | $ 72,605 | $ 87,368 |