STOCK AWARD PLAN AND STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense Included in the Company's Consolidated Statements of Operations (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Stock based compensation expense | $ 5,218,994 | $ 9,704,229 |
| Research and Development | ||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Stock based compensation expense | 2,414,040 | 3,026,056 |
| General and Administrative | ||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Stock based compensation expense | $ 2,804,954 | $ 6,678,173 |