Summary of Per Share Amounts (Detail) - CAD ($) shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Weighted average ordinary shares used in calculating basic and diluted earnings per share [abstract]
Net earnings (loss) -- basic	$ 289,244	$ (34,293)
Effect of share options and other equity compensation plans	9,235
Net earnings (loss) - diluted	$ 298,479	$ (34,293)
Weighted average shares outstanding – basic	13,754	13,546
Effect of share options and other equity compensation plans	1,533
Weighted average shares outstanding – diluted	15,287	13,546

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The potential dilutive effect on the weighted average number of ordinary shares that relates to the assumed conversion of the entity’s instruments. It represents the aggregate of the reconciliation amounts for all classes of instruments that reflect dilutive effect on weighted average number of ordinary shares.

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The increase (decrease) to profit (loss) to reflect the dilutive effect from assumed conversion of all potential ordinary shares.

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The profit (loss) attributable to ordinary equity holders of the parent entity. [Refer: Profit (loss)]

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The profit (loss) attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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