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INVESTMENT IN AN ASSOCIATED COMPANY (Narrative) (Details) $ / shares in Units, $ in Thousands, $ in Thousands |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 10, 2018 CAD ($) | Oct. 10, 2018 USD ($) | Sep. 27, 2018 USD ($) $ / shares shares | Dec. 31, 2019 CAD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 CAD ($) $ / shares shares | Dec. 31, 2018 USD ($) shares | Dec. 31, 2018 USD ($) | Dec. 31, 2017 CAD ($)
Disclosure of associates [line items] |  |  |  |  |  |  |  |  |
Distributions received |  |  |  | $ 4,952 |  | $ 84,247 |  |  |
Shares issued pursuant to credit facility (Shares) | shares |  |  |  |  |  | 381,321 | 381,321 |  |
Shares issued pursuant to credit facility |  |  |  |  |  | $ 602 | $ 465 |  |
Shares issued pursuant to credit facility, value per share | $ / shares |  |  |  |  |  | $ 1.58 |  |  |
Interest income |  |  |  | $ 1,667 |  | $ 822 |  |  |
Sprott Private Resource Lending (Collector), LP [Member] |  |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |  |
Notional amount |  |  | $ 18,500 |  |  |  |  |  |
Borrowings |  |  | $ 18,500 |  |  |  |  |  |
Annual interest rate |  |  | 12.00% |  |  |  |  |  |
Legal Fee |  |  |  |  |  |  | 194 |  |
Borrowings effective interest rate |  |  |  |  |  | 30.83% |  | 30.83% |
Interest expense on borrowing |  |  |  |  |  | $ 272 | $ 208 |  |
Loss on settlement of debt |  |  |  |  |  | 1,482 |  |  |
Funds held in trust |  |  |  |  |  | $ 86 |  |  |
IG Copper, LLC [Member] |  |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |  |
Percentage of equity interest derecognized |  |  |  |  |  | 39.99% | 39.99% |  |
Proportion of ownership interest in associate |  |  |  | 19.90% | 19.90% | 19.90% | 19.90% |  |
Investments accounted for using equity method |  |  |  |  |  |  |  | $ 13,137 |
Investment in associated companies |  |  |  | $ 0 |  | $ 0 |  |  | $ 7,579
Consideration received |  | $ 200,000 |  |  |  |  |  |  |
Consideration received released from escrow |  | 190,000 |  |  |  |  |  |  |
Remaining consideration received held in escrow |  | $ 10,000 |  |  |  |  |  |  |
Distributions received | $ 84,247 |  |  | $ 4,952 | $ 3,743 |  |  |  |
Loan to associates |  |  | $ 18,500 |  |  |  | $ 300 |  |
Membership units issued | shares |  |  | 37,000 |  |  |  |  |  |
Membership units issued, value per share | $ / shares |  |  | 10 |  |  |  |  |  |
Cash Fee Paid |  |  |  |  | $ 550 |  |  |  |
Borrowings effective interest rate |  |  |  |  |  | 38.64% |  | 38.64% |
Interest income |  |  |  |  |  | $ 332 | 254 |  |
Gain from early settlement of debt |  |  |  |  |  | 2,015 |  |  |
Proceeds from interest |  |  |  |  |  | $ 64 | $ 49 |  |

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