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 ($)
Jun. 30, 2019
Dec. 31, 2018
Class of Warrant or Right [Line Items]    
Fair value $ 366,732 $ 2,307,586
November 2015 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 10,765 234,918
November 2015 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value   435
March 2016 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 12,426 160,099
September 2016 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 43,752 333,834
June 2017 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 105,374 623,324
June 2017 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 8,685 65,149
October 2017 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value 169,925 801,551
October 2017 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Fair value $ 15,805 $ 88,276