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Summary of Shares Outstanding Under Share Based Incentive Plans (Detail) - shares
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Restricted Share Units (RSUs) [Member]    
Disclosure of terms and conditions of share-based payment arrangement [Line Items]    
Beginning balance 495,168 598,156
Granted 66,032 180,710
Redeemed (266,744) (266,876)
Forfeited (18,362) (16,822)
Ending balance 276,094 495,168
Performance Share Units (PSUs) [Member]    
Disclosure of terms and conditions of share-based payment arrangement [Line Items]    
Beginning balance 1,136,671 983,734
Granted 121,690 311,579
Redeemed (438,612) (143,659)
Forfeited (25,006) (14,983)
Ending balance 794,743 1,136,671
Deferred Share Units (DSUs) [Member]    
Disclosure of terms and conditions of share-based payment arrangement [Line Items]    
Beginning balance 118,774 104,591
Granted 16,336 14,183
Redeemed (18,830)  
Ending balance 116,280 118,774