Quarterly report pursuant to Section 13 or 15(d)

Warrants (Summary Of Changes In Warrants Outstanding During The Period) (Details)

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Warrants (Summary Of Changes In Warrants Outstanding During The Period) (Details)
 3 Months Ended
Mar. 31, 2020
$ / shares
shares
Class of Warrant or Right [Line Items]  
Number of warrants, Outstanding 1,921,489
Number of warrants, issued
Number of warrants, Exercised
Number of warrants, Expired
Number of warrants, Outstanding 1,921,489
Weigted average exercise price, Outstanding | $ / shares $ 22.10
Weighted average exercise price, Issued | $ / shares
Weighted average exercise price, Exercised | $ / shares
Weighted average exercise price, Expired | $ / shares
Weigted average exercise price, Outstanding | $ / shares $ 22.10
Liability-Classified Warrants [Member]  
Class of Warrant or Right [Line Items]  
Number of warrants, Outstanding 515,984
Number of warrants, issued
Number of warrants, Exercised
Number of warrants, Expired
Number of warrants, Outstanding 515,984
Equity-Classified Warrants [Member]  
Class of Warrant or Right [Line Items]  
Number of warrants, Outstanding 1,405,505
Number of warrants, issued
Number of warrants, Exercised
Number of warrants, Expired
Number of warrants, Outstanding 1,405,505