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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - CAD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Accumulated Other Comprehensive Income Loss Details Abstract      
Cumulative foreign currency translation $ 410 $ 403 $ 416
Gross unamortized experience gain - post employment liability 983 983 983
Tax effect unamortized experience gain - post employment liability (259) (259) (259)
Accumulated other comprehensive income $ 1,134 $ 1,127 $ 1,140