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 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants $ 100,637 $ 242,860 $ (126,457) $ 2,183,714
November 2015 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 2,262 9,560 (969) 233,713
November 2015 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants       435
March 2016 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 3,336 6,286 (2,587) 153,959
September 2016 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 8,246 28,382 (17,323) 318,464
June 2017 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 29,330 69,660 (42,397) 587,610
June 2017 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 2,775 5,804 (2,728) 62,268
October 2017 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 50,075 112,729 (55,452) 744,355
October 2017 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants $ 4,613 $ 10,439 $ (5,001) $ 82,910