Share Capital and Reserves - Summary of Information of Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Disclosure Of Share-Based Payment Arrangements [Abstract]
Net income attributable to Sandstorm’s shareholders for the year	$ 14,293	$ 41,716
Basic weighted average number of shares (in shares)	297,489,424	297,406,309
Basic earnings per share (in dollars per share)	$ 0.05	$ 0.14
Effect of dilutive securities, stock options (in shares)	305,353	644,651
Effect of dilutive securities, restricted share rights (in shares)	2,058,986	1,940,197
Diluted weighted average number of common shares (in shares)	299,853,763	299,991,157
Diluted earnings per share (in dollars per share)	$ 0.05	$ 0.14

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 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).

+ References

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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]]

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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 restricted share units.

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

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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [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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Share Capital, Reserves And Other Equity Interest [Abstract]

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