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INCOME TAXES - Canadian operating tax losses and tax credits expiry dates (Details) - Canada - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
INCOME TAXES    
Tax losses - gross $ 324,965 $ 287,754
Tax benefit at tax rate of 26% - 27% 88,408 77,650
Set-off against deferred tax liabilities (18,489) (20,070)
Total tax loss assets not recognized 69,919 57,580
Tax credits 1,126 1,126
Total tax credit assets not recognized $ 1,126 $ 1,126
Top of range [Member]    
INCOME TAXES    
Percentage of tax benefit 27.00%  
Bottom of range [Member]    
INCOME TAXES    
Percentage of tax benefit 26.00%