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Share Capital and Reserves - Summary of Information of Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Earnings per share [abstract]
Net income attributable to Sandstorm's shareholders for the year	$ 78,361	$ 27,622
Basic weighted average number of shares	231,348,386	193,974,313
Basic earnings per share	$ 0.34	$ 0.14
Effect of dilutive stock options	1,192,958	1,684,992
Effect of dilutive restricted share rights	1,776,836	2,164,175
Diluted weighted average number of common shares	234,318,180	197,823,480
Diluted earnings per share	$ 0.33	$ 0.14

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]]

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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).

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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 profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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