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Note 14 - Derivative Financial Instruments - Fair Value Losses and Cash Flows on Derivative Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement Line Items [Line Items]
Cash flows arising from investing activites	$ (768)	$ (478)	$ 1,066
Cash flows arising from financing activities	0	(3,458)	2,960
Derivative assets [member]
Statement Line Items [Line Items]
Fair value losses on derivative financial instruments	1,119	1,198	240
Put option 1 [member]
Statement Line Items [Line Items]
Fair value losses on derivative financial instruments	1,097	38	0
Cash flows arising from investing activites	(946)	(478)	0
Purchase option [member]
Statement Line Items [Line Items]
Fair value losses on derivative financial instruments	22	0	0
Cash flows arising from investing activites	178	0	0
Gold loan agreement [member]
Statement Line Items [Line Items]
Fair value losses on derivative financial instruments	0	(228)	21
Cash flows arising from financing activities	0	(3,698)	2,752
Call option 1 [member]
Statement Line Items [Line Items]
Fair value losses on derivative financial instruments	0	(240)	0
Cash flows arising from financing activities, proceeds	0	0	208
Cap and collar options and call options [member]
Statement Line Items [Line Items]
Fair value losses on derivative financial instruments	0	832	114
Cash flows arising from financing activities, proceeds	0	416	0
Call options transaction costs [member]
Statement Line Items [Line Items]
Fair value losses on derivative financial instruments	0	796	0
Gold ETF [member]
Statement Line Items [Line Items]
Fair value losses on derivative financial instruments	0	0	105
Cash flows arising from investing activites	0	0	1,066
Call options acquisitions [member]
Statement Line Items [Line Items]
Cash flows arising from financing activities, proceeds	$ 0	$ (176)	$ 0

X

- Definition

The cash inflow from futures contracts, forward contracts, option contracts and swap contracts except when the contracts are held for dealing or trading purposes or the receipts are classified as financing activities.

+ References

No definition available.

+ Details

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Namespace Prefix:	cmcl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash proceeds for (payments for) futures contracts, forward contracts, option contracts and swap contracts except when the contracts are held for dealing or trading purposes or the receipts are classified as investing activities.

+ References

No definition available.

+ Details

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X

- Definition

The cash inflow (outflow) for futures contracts, forward contracts, option contracts and swap contracts except when the contracts are held for dealing or trading purposes or the payments are classified as financing activities.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

X

- Definition

The amount of losses (gains) on change in fair value of derivatives.

+ References

No definition available.

+ Details

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Namespace Prefix:	cmcl_
Data Type:	xbrli:monetaryItemType
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- References

No definition available.

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X

- Definition

The losses resulting from changes in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 85
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_85&doctype=Standard
-URIDate 2023-03-23

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Balance Type:
Period Type:

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- Details

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Balance Type:
Period Type:

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- Details

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Period Type:

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- Details

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- Details

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- Details

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- Details

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- Details

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