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EARNINGS PER SHARE (Narrative) (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disclosure of Earnings Per Share [line items]
Antidilutive effect of convertible instruments on number Of ordinary shares	9,143,000	9,176,000
Antidilutive securities excluded from computation of EPS	1,657,298	2,380,857
Stock Options
Disclosure of Earnings Per Share [line items]
Antidilutive securities excluded from computation of EPS	0	509,468

X

- Definition

The number of anti dilutive potential ordinary shares that relate to the assumed conversion of the entity's convertible instruments exclude excluded from the calculation of diluted earnings per share.

+ References

No definition available.

+ Details

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X

- Definition

Disclosure of Earnings Per Share [line items].

+ References

No definition available.

+ Details

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X

- Definition

Number of antidilutive securities excluded from computation of earnings per share amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	fsm_
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X

- Details

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