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INCOME TAXES (Details 5) - Canada - CAD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
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