STOCK-BASED COMPENSATION (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
|
| Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items] | ||||
| Total stock-based compensation | $ 200,617 | $ 92,643 | $ 325,181 | $ 236,789 |
| Employee and director stock option grants [Member] | Research and development [Member] | ||||
| Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items] | ||||
| Total stock-based compensation | 41,400 | 3,478 | 70,795 | 27,213 |
| Employee and director stock option grants [Member] | General and administrative [Member] | ||||
| Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items] | ||||
| Total stock-based compensation | $ 159,217 | $ 89,165 | $ 254,386 | $ 209,576 |