EQUITY - Reconciliation of Transactions Under ATM Agreement (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Class of Stock [Line Items] | ||||
| Net proceeds | $ 0 | $ 18,020,000 | $ 27,399,999 | $ 4,197,622 |
| ATM Agreement | ||||
| Class of Stock [Line Items] | ||||
| Issuance of common stock (in shares) | 9,220,123 | 5,747,608 | ||
| Gross proceeds | $ 27,399,999 | $ 4,197,621 | ||
| Cash fees | (1,064,498) | (130,070) | ||
| Net proceeds | $ 26,335,501 | $ 4,067,551 | ||
| Average gross proceeds per share (in dollars per share) | $ 2.97 | $ 0.73 | ||