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
Mar. 31, 2020
Mar. 31, 2019
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants $ (58,392) $ 1,513,371
November 2015 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants (916) 197,084
November 2015 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants   380
March 2016 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants (801) 114,799
September 2016 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants (11,443) 217,869
June 2017 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants (18,628) 388,391
June 2017 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants (1,729) 41,911
October 2017 Investor Warrants [Member]    
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants (22,406) 496,501
October 2017 Placement Agent Warrants [Member]    
Class of Warrant or Right [Line Items]    
Unrealized (loss) gain on fair value of warrants $ (2,469) $ 56,436