Stock-Based Compensation (Summary Of Stock Compensation Expense) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share Based Compensation | $ 369,402 | $ 225,316 | $ 1,063,589 | $ 769,668 |
| General and administrative [Member] | ||||
| Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share Based Compensation | 232,951 | 127,203 | 673,064 | 492,908 |
| Research and development [Member] | ||||
| Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share Based Compensation | $ 136,451 | $ 98,113 | $ 390,525 | $ 276,760 |