Warrants (Schedule Of Fair Value Of Warrants Issued) (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Class of Warrant or Right [Line Items]
Fair value	$ 110,781	$ 41,717
November 2015 Investor Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value		55
March 2016 Investor Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value	3,026	439
September 2016 Investor Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value	1,093	3,196
June 2017 Investor Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value	32,218	11,736
June 2017 Placement Agent Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value	3,573	845
October 2017 Investor Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value	64,196	23,772
October 2017 Placement Agent Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value	$ 6,675	$ 1,674