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INCOME TAXES (Details 4) - CAD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Statement [Line Items] |  |
Deferred income tax assets not recognized | $ 119,836 | $ 116,819
Tax Losses - Capital |  |
Statement [Line Items] |  |
Deferred income tax assets not recognized | 58,312 | 66,873
Tax Losses - Operating |  |
Statement [Line Items] |  |
Deferred income tax assets not recognized | 51,353 | 42,635
Other Deductible Temporary Differences |  |
Statement [Line Items] |  |
Deferred income tax assets not recognized | 5,023 | 1,441
Tax Credits |  |
Statement [Line Items] |  |
Deferred income tax assets not recognized | 1,126 | 1,126
Property Plant And Equipments [Member] |  |
Statement [Line Items] |  |
Deferred income tax assets not recognized | $ 4,022 | $ 4,744

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