Quarterly report pursuant to Section 13 or 15(d)

Warrants (Schedule Of Unrealized Gain/(Loss) On Fair Value Of Warrants) (Details)

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Warrants (Schedule Of Unrealized Gain/(Loss) On Fair Value Of Warrants) (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
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]
       
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]
       
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]
       
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]
       
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]
       
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]
       
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]
       
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]
       
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]
       
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]
       
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]
       
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]
       
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]
       
Class of Warrant or Right [Line Items]        
Unrealized gain/(loss) on fair value of warrants $ 95,196   $ (122,066)