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INCOME TAXES (Details 5) - Canada - CAD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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DisclosureOfIncomeTaxesLineItems [Line Items] |  |
Tax losses - gross | $ 192,197 | $ 158,437
Tax benefit at tax rate of 26% - 27% | 51,731 | 42,566
Set-off against deferred tax liabilities | (15,827) | (13,346)
Total tax loss assets not recognized | 35,904 | 29,220
Tax credits | 1,126 | 1,126
Total tax credit assets not recognized | $ 1,126 | $ 1,126

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