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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2023
EARNINGS PER SHARE [abstract] |
Schedule of Earnings per Share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Years ended December 31,
​ |  | 2023 |  | 2022
Basic: | ​ | ​ | ​ | ​ | ​ | ​
Net loss attributable to Fortuna shareholders | ​ | $ | (50,836) | ​ | $ | (128,132)
Weighted average number of shares (000's) | ​ | ​ | 295,067 | ​ | ​ | 291,281
Loss per share - basic | ​ | $ | (0.17) | ​ | $ | (0.44)
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Years ended December 31,
​ |  | 2023 |  | 2022
Diluted: | ​ | ​ | ​ | ​ | ​ | ​
Net loss attributable to Fortuna shareholders | ​ | $ | (50,836) | ​ | $ | (128,132)
Diluted net loss for the period | ​ | $ | (50,836) | ​ | $ | (128,132)
​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average number of shares (000's) | ​ | ​ | 295,067 | ​ | ​ | 291,281
Weighted average diluted number of shares (000's) | ​ | ​ | 295,067 | ​ | ​ | 291,281
Loss per share - diluted | ​ | $ | (0.17) | ​ | $ | (0.44)

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