Quarterly report pursuant to Section 13 or 15(d)

Warrants (Schedule Of Assumptions Used In Calculating Fair Value Of Warrants) (Details)

v3.7.0.1
Warrants (Schedule Of Assumptions Used In Calculating Fair Value Of Warrants) (Details) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Class of Warrant or Right [Line Items]    
Trading market prices $ 2.86 $ 1.40
Estimated future volatility 104.00% 104.00%
Dividend
Minimum [Member]    
Class of Warrant or Right [Line Items]    
Estimated future risk-free rate 1.23% 1.06%
Equivalent volatility 106.00% 51.00%
Equivalent risk-free rate 0.87% 0.59%
Maximum [Member]    
Class of Warrant or Right [Line Items]    
Estimated future risk-free rate 2.31% 2.44%
Equivalent volatility 129.00% 60.00%
Equivalent risk-free rate 1.48% 1.25%