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Financial Instruments (Details 1)
$ in Thousands
Dec. 31, 2021
USD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2020
CAD ($)
Dec. 31, 2019
CAD ($)
Statement [Line Items]          
Marketable securities $ 605,000 $ 605 $ 2,675,000 $ 2,675 $ 346
Level 1          
Statement [Line Items]          
Marketable securities 282,000     2,165  
Level 2          
Statement [Line Items]          
Marketable securities $ 323,000     $ 510