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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Aug. 10, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Accounts payable |  | $ 28,726 |  | $ 28,726 |  | $ 30,817
Long-term debt from related party (note 18) |  | 24,678 |  | 24,678 |  | 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 |  | 1,200 |  |
Entity Affiliated With Related Party | Lexam L.P. |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Expense (income) |  | 16 | $ 18 | 77 | 31 |
Related party outstanding accounts payable |  | 7 |  | 7 |  |
Entity Affiliated With Related Party | REVlaw |  |  |  |  |  |
RELATED PARTY TRANSACTIONS |  |  |  |  |  |
Expense (income) |  | 86 | $ 68 | 128 | $ 102 |
Related party outstanding accounts payable |  | $ 17 |  | $ 17 |  | $ 32

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