Warrants (Schedule Of Unrealized Gain/(Loss) On Fair Value Of Warrants) (Details) (USD $)
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3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | $ 3,665,365 | $ (1,206,656) | $ (7,995,159) | $ (837,754) |
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 | |||
Series III Warrants [Member] | June 5, 2009 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 80,889 | 47 | 11 | 30,069 |
Warrants To Institutional Investors [Member] | October 23, 2009 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 284,047 | (15,355) | (309,903) | 26,040 |
Warrants To Institutional Investors [Member] | June 30, 2010 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 61,000 | 200 | 10 | 9,000 |
Warrants To Institutional Investors [Member] | March 31, 2011 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 725,883 | (116,666) | (748,090) | (20,000) |
Warrants To Institutional Investors [Member] | December 4, 2012 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 55,683 | (1,004,301) | (4,170,019) | (837,321) |
Warrants To Institutional Investors [Member] | July 26, 2013 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 501,262 | (1,699,355) | ||
Warrants To Institutional Investors [Member] | October 16, 2013 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 604,836 | (1,435,140) | ||
Warrants To Institutional Investors [Member] | January 21, 2014 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 1,209,767 | 1,277,862 | ||
Warrants To Placement Agent [Member] | June 5, 2009 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 8,484 | (53) | 1 | 2,802 |
Warrants To Placement Agent [Member] | December 4, 2012 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 9,359 | (70,528) | (523,891) | (48,488) |
Warrants To Placement Agent [Member] | July 26, 2013 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | 28,959 | (264,579) | ||
Warrants To Placement Agent [Member] | October 16, 2013 Financing [Member]
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Class of Warrant or Right [Line Items] | ||||
Unrealized gain/(loss) on fair value of warrants | $ 95,196 | $ (122,066) |