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Share-Based Compensation - Additional Information (Detail)
12 Months Ended
Dec. 31, 2022
CAD ($)
shares
$ / shares
Dec. 31, 2021
CAD ($)
shares
$ / shares
Dec. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share based compensation by share based award number of options granted during the period | shares 654,847  
Share based compensation by share based award weighted average fair value of stock options granted during the period | $ / shares   $ 2.89  
Allocated share based compensation $ 16,162,000 $ 12,937,000  
Number of Shares Of Cash Settled During The Period | shares 572,260    
Deferred Share Units [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Allocated share based compensation $ 3,622,000 3,053,000  
Share based compensation by share based award equity instruments other than options granted | shares 307,037    
Settlement of liability in respect of share based transactions $ 600,000 0  
Deferred Share Units [Member] | Current Liabilities [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Liabilities from share based transaction 3,400,000 0  
Deferred Share Units [Member] | Director And Executive [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Allocated share based compensation 2,200,000 2,100,000  
Phantom Share Entitlement Plan [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Allocated share based compensation $ 117,000 $ 102,000  
Share based compensation by share based award equity instruments other than options granted | shares 0 24,715  
Intrinsic value of liabilities from share based payment transactions $ 800,000 $ 900,000  
Phantom Share Entitlement Plan [Member] | Current Liabilities [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Liabilities from share based transaction 300,000 200,000  
Performance Share Units [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Allocated share based compensation $ 4,172,000 3,470,000  
Share based compensation by share based award equity instruments other than options granted | shares 634,382    
Share based compensation number of days within which award will be settled from the date of determination of vesting percentage     14 days
Settlement of liability in respect of share based transactions $ 2,200,000 1,000,000  
Performance Share Units [Member] | Current Liabilities [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Liabilities from share based transaction 4,000,000 2,000,000  
Performance Share Units [Member] | Top of range [member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share based compensation by share based award vesting percentage     200.00%
Restricted Share Units [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Allocated share based compensation $ 4,454,000 2,751,000  
Share based compensation by share based award equity instruments other than options granted | shares 995,336    
Restricted Share Units [Member] | Current Liabilities [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Liabilities from share based transaction $ 4,300,000 $ 1,300,000  
Restricted Share Units [Member] | Directors And Certain Key Executives [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share based compensation by share based award equity instruments other than options granted | shares 995,336 472,819  
Settlement of liability in respect of share based transactions $ 2,400,000 $ 2,300,000  
Cash Performance Target Plan [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Settlement of liability in respect of share based transactions 1,600,000 $ 1,500,000  
Share based compensation by share based equity instruments other than options granted during the period value $ 3,100,000    
Share based compensation by share based award weighted average fair value of equity instruments other than options granted | $ / shares $ 6.29 $ 7.85  
Cash Performance Target Plan [Member] | Current Liabilities [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Liabilities from share based transaction   $ 2,200,000  
Employee Share Purchase Plan [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share Based Compensation Employer Contribution $ 1,000