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Share-Based Compensation And Other Related Information - Performance Share Unit Activity (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2021
CAD ($)
Dec. 31, 2020
CAD ($)
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Share-based compensation $ 5,128 $ 3,024    
Performance Share Units [member]        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
PSU performance period 3 years      
Weighted average fair value at measurement date, other equity instruments granted     $ 32.72 $ 39.51
Share-based compensation $ 1,900 $ 4,200    
Other equity instruments outstanding. beginning (shares | shares 255,559 247,601    
Granted (shares) | shares 79,417 62,920    
Paid out (shares) | shares (117,328) (54,962)    
Forfeited (shares) | shares 0      
Other equity instruments outstanding, ending (shares) | shares 217,648 255,559    
Fair value of other equity instruments outstanding, beginning $ 8,870 $ 5,896    
Granted, fair value 2,049 1,942    
Paid out, fair value (4,539) (2,626)    
Forfeited, fair value 0      
Change in value, fair value (901) 3,658    
Fair value of other equity instruments outstanding, ending $ 5,479 $ 8,870