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Long-Term Notes (Details)
$ in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2022
CAD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2022
USD ($)
Jun. 01, 2022
USD ($)
Dec. 31, 2021
USD ($)
Feb. 05, 2020
Disclosure of detailed information about borrowings [line items]              
Long-term notes $ 547,598   $ 874,527        
Repurchased and cancelled principal notes 376,589   251,969        
Early redemption expense 6,286   4,858        
Unamortized debt issuance costs         $ 1.7    
Principal              
Disclosure of detailed information about borrowings [line items]              
Long-term notes 554,597   885,920        
Loan repayments 374,100            
Changes in reported amount of U.S. denominated debt 42,800            
Unamortized debt issuance costs              
Disclosure of detailed information about borrowings [line items]              
Long-term notes $ (6,999)   (11,393)        
5.625% notes due June 1, 2024              
Disclosure of detailed information about borrowings [line items]              
Notional amount       $ 0.0 $ 200.0 $ 200.0  
5.625% notes due June 1, 2024 | Fixed interest rate              
Disclosure of detailed information about borrowings [line items]              
Borrowings, interest rate 5.625%     5.625%      
5.625% notes due June 1, 2024 | Principal              
Disclosure of detailed information about borrowings [line items]              
Long-term notes $ 0   253,120        
8.75% Notes Due April 1, 2027              
Disclosure of detailed information about borrowings [line items]              
Notional amount       $ 409.8   $ 500.0  
Repurchased and cancelled principal notes   $ 90.2          
Early redemption expense $ 2,500            
8.75% Notes Due April 1, 2027 | Fixed interest rate              
Disclosure of detailed information about borrowings [line items]              
Borrowings, interest rate 8.75%     8.75%     8.75%
8.75% Notes Due April 1, 2027 | Principal              
Disclosure of detailed information about borrowings [line items]              
Long-term notes $ 554,597   $ 632,800