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Share Capital (Antidilutive Securities) (Details) - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Earnings per share [line items]    
Share price (cad per share) $ 10.01 $ 10.87
Stock options    
Earnings per share [line items]    
Antidilutive securities 4,601 0