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EARNINGS PER SHARE (Schedule of Earnings per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
EARNINGS PER SHARE
Net income attributable to Fortuna shareholders	$ 128,735	$ (50,836)
Weighted average number of shares (000's)	308,885	295,067
Earnings per share - basic	$ 0.42	$ (0.17)
Diluted net income for the period	$ 128,735	$ (50,836)
Incremental shares from dilutive potential shares	1,862
Weighted average diluted number of shares (000's)	310,747	295,067
Earnings per share - diluted	$ 0.41	$ (0.17)

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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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