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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Aug. 10, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
RELATED PARTY TRANSACTIONS |  |  |  |
Long-term debt from related party (note 18) |  | $ 19,758 | $ 24,603 |
Term Loan |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |
Face amount | $ 50,000 |  |  |
Debt Instrument Term | 3 years |  |  |
Robert McEwen | Term Loan |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |
Long-term debt from related party (note 18) | $ 25,000 |  |  |
Affiliate of Robert McEwen |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |
Debt interest expense |  | 2,400 | 1,000 |
Affiliate of Robert McEwen | Term Loan |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |
Long-term debt from related party (note 18) | $ 25,000 |  |  |
Entity Affiliated With Related Party | Lexam L.P. |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |
Expense (income) |  | 133 | 91 | $ 152
Entity Affiliated With Related Party | REVlaw |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |
Expense (income) |  | 188 | 266 | $ 330
Related party outstanding accounts payable |  | $ 22 | $ 32 |

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