Warrants (Schedule Of Assumptions Used In Calculating Fair Value Of Warrants) (Details) - $ / shares |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2016 |
Dec. 31, 2015 |
|
| Warrants [Abstract] | ||
| Trading market prices | $ 0.21 | $ 0.36 |
| Estimated future volatility | 104.00% | 105.00% |
| Dividend | ||
| Estimated future risk-free rate, minimum | 0.77% | 0.82% |
| Estimated future risk-free rate, maximum | 1.46% | 2.38% |
| Equivalent volatility, minimum | 41.00% | 44.00% |
| Equivalent volatility, maximum | 59.00% | 65.00% |
| Equivalent risk-free rate, minimum | 0.42% | 0.22% |
| Equivalent risk-free rate, maximum | 0.80% | 1.11% |