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 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants $ 608,301 $ 1,201,394 $ 2,282,476 $ (6,793,765)
Exercised And Expired Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants   20,943   (288,938)
March 31, 2011 Warrants To Institutional Investors [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants (13,193) 325,303 291,847 (422,787)
December 4, 2012 Warrants To Institutional Investors [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 16,350 17,395 46,021 (4,152,624)
December 4, 2012 Warrants To Placement Agent [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 2,037 3,131 7,614 (520,760)
July 26, 2013 Warrants To Institutional Investors [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 147,848 162,082 412,208 (1,537,273)
July 26, 2013 Warrants To Placement Agent [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 558 10,238 20,112 (254,341)
October 16, 2013 Warrants To Institutional Investors [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 166,744 192,613 472,682 (1,242,527)
October 16, 2013 Warrants To Placement Agent [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 695 33,955 64,792 (88,111)
January 21, 2014 Warrants To Institutional Investors [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants $ 287,262 $ 435,734 $ 967,200 $ 1,713,596