SHARE-BASED PAYMENTS - Stock-based Compensation - Stock options granted (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation expense | $ 139,093 | $ 36,976 |
| Unrecognized compensation cost related to non-vested stock option | $ 917,943 | |
| Share-based arrangement, non-vested weighted average period | 2 years 14 days | |
| Sales and Marketing Expense | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation expense | $ 1,254,694 | |
| General and Administrative Expense. | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation expense | $ 14,399 | |