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Retirement Benefits Plan - Summary of defined contribution plans (Detail) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure Of Defined Contribution Plans Explanatory [Abstract]    
Defined contribution plans $ 5,169 $ 4,567
401(k) matched savings plan 4,110 3,025
Net pension expense $ 9,279 $ 7,592