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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 10, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Accounts payable |  | $ 32,110 |  | $ 32,110 |  | $ 30,817
Long-term debt from related party (note 18) |  | 22,718 |  | 22,718 |  | 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 |  | 1,800 | $ 400 |
Entity Affiliated With Related Party | Lexam L.P. |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Expense (income) |  | 36 | $ 28 | 113 | 59 |
Entity Affiliated With Related Party | REVlaw |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Expense (income) |  | 56 | $ 50 | 184 | $ 151 |
Related party outstanding accounts payable |  | $ 74 |  | $ 74 |  | $ 32

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