LONG-TERM RECLAMATION LIABILITY - Narrative (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Jan. 01, 2021 |
Mar. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Regulatory Assets [Line Items] | |||||
| Accrued long-term liability | $ 6,470,156 | $ 5,445,672 | $ 6,054,919 | $ 6,034,208 | |
| Reduction of obligation due to extension of time | $ (926,434) | 0 | |||
| Discount rate | 6.02% | ||||
| Reduction of obligation | $ 926,434 | $ 0 | |||
| Adjustment in excess of the net retirement obligation asset | $ (57,963) | ||||
| Downward adjustment in retirement asset obligation | $ 926,434 | ||||
| Other Income | |||||
| Regulatory Assets [Line Items] | |||||
| Downward adjustment in retirement asset obligation | $ 868,471 | ||||