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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Aug. 10, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
RELATED PARTY TRANSACTIONS |  |  |  |
Accounts payable |  | $ 27,292 |  | $ 30,817
Long-term debt from related party (note 18) |  | 24,640 |  | $ 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 |  | 600 |  |
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) |  | 61 | $ 27 |
Outstanding accounts payable |  | 65 |  |
Entity Affiliated With Related Party | REVlaw |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |
Expense (income) |  | 41 | 52 |
Outstanding accounts payable |  | $ 12 | $ 32 |

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