Stock-Based Compensation - Summary of Recognized Stock-Based Compensation Expense Related to Stock Options Granted to Employees and Directors (Details) - Employee Stock Option - USD ($) |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
|
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||||
Stock-based compensation expense | $ 135,393 | $ 39,991 | $ 344,712 | $ 58,538 |
Research and development | ||||
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||||
Stock-based compensation expense | 27,081 | 5,494 | 78,780 | 5,994 |
General and administrative | ||||
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||||
Stock-based compensation expense | $ 108,312 | $ 34,497 | $ 265,932 | $ 52,544 |