Quarterly report pursuant to Section 13 or 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 ($)
Mar. 31, 2019
Dec. 31, 2018
Class of Warrant or Right [Line Items]    
Fair value $ 794,215 $ 2,307,586
November 2015 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 37,834 234,918
November 2015 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 55 435
March 2016 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 45,300 160,099
September 2016 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 115,965 333,834
June 2017 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 234,933 623,324
June 2017 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 23,238 65,149
October 2017 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 305,050 801,551
October 2017 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value $ 31,840 $ 88,276