Annual report pursuant to Section 13 and 15(d)

Warrants (Schedule Of Fair Value Of Warrants Issued) (Details)

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Warrants (Schedule Of Fair Value Of Warrants Issued) (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Class of Warrant or Right [Line Items]    
Fair value $ 7,853,635 $ 1,573,366
December 2012 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value   49
July 2013 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 8,762 2,060
October 2013 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 26,288 3,708
January 2014 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 29,257 714
November 2015 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 1,260,050 260,500
November 2015 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 2,936 13,542
March 2016 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 697,554 358,945
March 2016 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value   21,320
September 2016 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 1,054,083 854,640
September 2016 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value   $ 57,888
June 2017 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 1,981,864  
June 2017 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 221,591  
October 2017 Investor Warrants    
Class of Warrant or Right [Line Items]    
Fair value 2,305,552  
October 2017 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value $ 265,698