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FINANCIAL RISK MANAGEMENT (Narrative) (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure Of Financial Risk Management [Line Items] |  |
Percentage CAD strengthening against USD | 10.00% |
Fair value of senior secured notes | $ 324,029 |
Carrying value | 313,965 |
Settlement receivables | $ 4,676 | $ 9,006
Commodity Derivatives [Member] |  |
Disclosure Of Financial Risk Management [Line Items] |  |
Interest rate basis points | 100 basis points |
Two Customers [Member] |  |
Disclosure Of Financial Risk Management [Line Items] |  |
Revenue from significant customers | 88.00% | 87.00%

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- Details
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- Details
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