Stock-Based Compensation (Details 4) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Stock-based compensation expense in operating expenses: | ||||
| Total Stock-based Compensation Expense | $ 300,276 | $ 138,282 | $ 913,040 | $ 561,097 |
| Research and development [Member] | ||||
| Stock-based compensation expense in operating expenses: | ||||
| Total Stock-based Compensation Expense | 217,499 | 126,600 | 555,034 | 420,789 |
| General and administrative [Member] | ||||
| Stock-based compensation expense in operating expenses: | ||||
| Total Stock-based Compensation Expense | $ 82,777 | $ 11,682 | $ 358,006 | $ 140,308 |