Accounts Payable And Accrued Expenses (Details) - USD ($) |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Accounts Payable And Accrued Expenses [Abstract] | ||
| Trade payables | $ 416,708 | $ 774,543 |
| Accrued expenses | 106,999 | 92,752 |
| Accrued research and development contract costs | 1,115,518 | 1,515,151 |
| Payroll liabilities | 146,499 | 278,852 |
| Total accounts payable and accrued expenses | $ 1,785,724 | $ 2,661,298 |