Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Warrants (Summary Of Changes In Warrants Outstanding During The Period) (Details) - $ / shares
 6 Months Ended
Jan. 25, 2019
Jun. 30, 2019
Class of Warrant or Right [Line Items]    
Number of warrants, Outstanding   1,065,286
Number of warrants, issued 895,886 895,886
Number of warrants, Exercised  
Number of warrants, Expired   (39,683)
Number of warrants, Outstanding   1,921,489
Weigted average exercise price, Outstanding   $ 37.52
Weighted average exercise price, Issued   9.60
Weighted average exercise price, Exercised  
Weighted average exercise price, Expired   153.60
Weigted average exercise price, Outstanding   $ 22.10
Liability-Classified Warrants [Member]    
Class of Warrant or Right [Line Items]    
Number of warrants, Outstanding   555,667
Number of warrants, Exercised  
Number of warrants, Expired   (39,683)
Number of warrants, Outstanding   515,984
Equity-Classified Warrants [Member]    
Class of Warrant or Right [Line Items]    
Number of warrants, Outstanding   509,619
Number of warrants, issued   895,886
Number of warrants, Exercised  
Number of warrants, Outstanding   1,405,505