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Warrants (Schedule Of Unrealized Gain/(Loss) On Fair Value Of Warrants) (Details) (USD $)
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3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | $ 1,201,394 | $ (217,751) | $ (6,793,765) | $ (1,055,505) |
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Exercised And Expired Warrants [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 144 | |||
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June 5, 2009 Series III Warrants [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | (5,336) | 11 | 24,733 | |
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June 5, 2009 Warrants To Placement Agent [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | (410) | 1 | 2,392 | |
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October 23, 2009 Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 20,943 | 2,580 | (288,960) | 28,620 |
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June 30, 2010 Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | (4,600) | 10 | 4,400 | |
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March 31, 2011 Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 325,303 | (33,334) | (422,787) | (53,334) |
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December 4, 2012 Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 17,395 | (464,181) | (4,152,624) | (1,301,502) |
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December 4, 2012 Warrants To Placement Agent [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 3,131 | (11,880) | (520,760) | (60,368) |
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July 26, 2013 Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 162,082 | 272,916 | (1,537,273) | 272,916 |
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July 26, 2013 Warrants To Placement Agent [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 10,238 | 26,494 | (254,341) | 26,494 |
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October 16, 2013 Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 192,613 | (1,242,527) | ||
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October 16, 2013 Warrants To Placement Agent [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | 33,955 | (88,111) | ||
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January 21, 2014 Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||||
| Unrealized gain/(loss) on fair value of warrants | $ 435,734 | $ 1,713,596 | ||