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 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants $ (168,702) $ 427,483 $ (227,094) $ 1,940,854
November 2015 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants (2,315) 27,069 (3,231) 224,153
November 2015 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants   55   435
March 2016 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants (5,122) 32,874 (5,923) 147,673
September 2016 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants (14,126) 72,213 (25,569) 290,082
June 2017 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants (53,099) 129,559 (71,727) 517,950
June 2017 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants (3,774) 14,553 (5,503) 56,464
October 2017 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants (83,121) 135,125 (105,527) 631,626
October 2017 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized (loss) gain on fair value of warrants $ (7,145) $ 16,035 $ (9,614) $ 72,471