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v3.25.0.1

Share Based Compensation Plans - Additional Information (Detail) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2025 shares | Dec. 31, 2024 CAD ($) shares | Dec. 31, 2023 CAD ($) shares
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Option vesting period |  | 3 years |
Option expiration term |  | 7 years |
Net earnings | $ |  | $ (0.4) | $ 0.0
Events After Reporting Period [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Share based compensation number of shares vested | 150,068 |  |
Restricted Share Units (RSUs) [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Shares granted to eligible employees vest term |  | 3 years |
Number of units redeemed |  | 180,989 | 266,744
Performance Share Units (PSUs) [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Shares granted to eligible employees vest term |  | 3 years |
Number of units redeemed |  | 450,726 | 438,612
Deferred Share Units (DSUs) [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Number of units redeemed |  |  | 18,830
Executive Restricted Share Units [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Share unit vesting period |  | 3 years |
Net earnings | $ |  | $ (4.0) | $ (3.0)
Number of units redeemed |  | 15,570 |
U.S. Share Options [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Number of options granted |  | 0 | 0

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