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Summary of Shares Outstanding Under Share Based Incentive Plans (Detail) - shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Restricted Share Units (RSUs) [Member]    
Disclosure of terms and conditions of share-based payment arrangement [Line Items]    
Beginning balance 276,094 495,168
Granted 92,423 66,032
Redeemed (180,989) (266,744)
Forfeited (7,768) (18,362)
Ending balance 179,760 276,094
Performance Share Units (PSUs) [Member]    
Disclosure of terms and conditions of share-based payment arrangement [Line Items]    
Beginning balance 794,743 1,136,671
Granted 158,440 121,690
Redeemed (450,726) (438,612)
Forfeited (5,404) (25,006)
Ending balance 497,053 794,743
Deferred Share Units (DSUs) [Member]    
Disclosure of terms and conditions of share-based payment arrangement [Line Items]    
Beginning balance 116,280 118,774
Granted 7,193 16,336
Redeemed   (18,830)
Ending balance 123,473 116,280