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Note 10 - Other Expenses (Details Textual)	9 Months Ended
	Sep. 30, 2024 USD ($)
Statement Line Items [Line Items]
Retirement benefits, discretionary payments	$ 2,100

X

- Definition

The amount of discretionary payments of retirement benefits.

+ References

No definition available.

+ Details

Name:	cmcl_RetirementBenefitsDiscretionaryPayments
Namespace Prefix:	cmcl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	cmcl_Statement1LineItems
Namespace Prefix:	cmcl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration