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Earnings (Loss) Per Share - Summary Of Loss (Profit) Per Share (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024 CAD ($) $ / shares shares	Dec. 31, 2024 $ / shares	Dec. 31, 2023 CAD ($) $ / shares shares	Dec. 31, 2023 $ / shares
Diluted earnings (loss) per share
Diluted earnings (loss) available to NexGen shareholders | $	$ (77,559)		$ 80,816
Weighted average number of common shares	554,755,412		498,243,824
Effect of share options on issue			14,698,606
Weighted average number of common shares (diluted)	554,755,412		529,214,619
Diluted earnings (loss) per share | (per share)	$ (0.14)	$ (0.14)	$ 0.16	$ 0.16

X

- Definition

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]]

+ References

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- Definition

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

+ References

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- Definition

The potential dilutive effect on the weighted average number of ordinary shares that relate to the assumed exercise of the entity's share options.

+ References

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- Definition

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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