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Note 12 - Exploration and Evaluation Assets - Exploration and Evaluation Assets (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Statement Line Items [Line Items] |  |  |
Balance at beginning of period | $ 94,272 |  | $ 17,579
- Bilboes Gold |  |  | 73,198
Decommissioning asset estimation adjustment | (899) | [1] | 1,618
- Consumables and drilling | 1,285 |  | 1,005
- Contractor | 19 |  | 2
- Labour | 472 |  | 488
- Power | 5 |  | 7
- Other | 676 |  | 375
Balance | 95,830 |  | 94,272
Bilboes Gold [member] |  |  |
Statement Line Items [Line Items] |  |  |
Balance at beginning of period | 73,573 |  | 0
- Bilboes Gold |  |  | 73,198
Decommissioning asset estimation adjustment | 0 | [1] | 0
- Consumables and drilling | 0 |  | 0
- Contractor | 0 |  | 0
- Labour | 0 |  | 0
- Power | 0 |  | 0
- Other | 609 |  | 375
Balance | 74,182 |  | 73,573
Motapa [member] |  |  |
Statement Line Items [Line Items] |  |  |
Balance at beginning of period | 10,592 |  | 7,844
Decommissioning asset estimation adjustment | (899) | [1] | 1,466
- Consumables and drilling | 1,266 |  | 903
- Contractor | 14 |  | 2
- Labour | 421 |  | 377
- Power | 2 |  | 0
- Other | 67 |  | 0
Balance | 11,463 |  | 10,592
Maligreen [member] |  |  |
Statement Line Items [Line Items] |  |  |
Balance at beginning of period | 5,998 |  | 5,626
Decommissioning asset estimation adjustment | 0 | [1] | 152
- Consumables and drilling | 19 |  | 102
- Contractor | 5 |  | 0
- Labour | 0 |  | 111
- Power | 3 |  | 7
- Other | 0 |  | 0
Balance | 6,025 |  | 5,998
GG [member] |  |  |
Statement Line Items [Line Items] |  |  |
Balance at beginning of period | 3,723 |  | 3,723
Decommissioning asset estimation adjustment | 0 | [1] | 0
- Consumables and drilling | 0 |  | 0
- Contractor | 0 |  | 0
- Labour | 51 |  | 0
- Power | 0 |  | 0
- Other | 0 |  | 0
Balance | 3,774 |  | 3,723
Sabiwa [member] |  |  |
Statement Line Items [Line Items] |  |  |
Balance at beginning of period | 294 |  | 294
Decommissioning asset estimation adjustment | 0 | [1] | 0
- Consumables and drilling | 0 |  | 0
- Contractor | 0 |  | 0
- Labour | 0 |  | 0
- Power | 0 |  | 0
- Other | 0 |  | 0
Balance | 294 |  | 294
Abercorn [member] |  |  |
Statement Line Items [Line Items] |  |  |
Balance at beginning of period | 27 |  | 27
Decommissioning asset estimation adjustment | 0 | [1] | 0
- Consumables and drilling | 0 |  | 0
- Contractor | 0 |  | 0
- Labour | 0 |  | 0
- Power | 0 |  | 0
- Other | 0 |  | 0
Balance | 27 |  | 27
Valentine [member] |  |  |
Statement Line Items [Line Items] |  |  |
Balance at beginning of period | 65 |  | 65
Decommissioning asset estimation adjustment | 0 | [1] | 0
- Consumables and drilling | 0 |  | 0
- Contractor | 0 |  | 0
- Labour | 0 |  | 0
- Power | 0 |  | 0
- Other | 0 |  | 0
Balance | $ 65 |  | $ 65
[1] | After further review of the Motapa claims the old tailings storage facility, previously included in the rehabilitation liability, is not within the Caledonia claims area. The tailing storage facility was subsequently excluded from the rehabilitation liability footprint. Refer to note 20 for more information.

X
- Definition The amount of increase (decrease) in exploration and evaluation assets from consumables and drilling. + 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 amount of increase (decrease) in exploration and evaluation assets from contractor. + 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 increase (decrease) in exploration and evaluation assets from decommissioning asset acquired. + References No definition available. + Details
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Namespace Prefix: | cmcl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of increase (decrease) in exploration and evaluation assets from labour. + 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 increase (decrease) in exploration nd evaluation assets from mining claims acquired. + References No definition available. + Details
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Namespace Prefix: | cmcl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Represents the increase (decrease) in exploration and evaluation assets from other sources. + References No definition available. + Details
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Namespace Prefix: | cmcl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of increase (decrease) in exploration and evaluation assets from power. + References No definition available. + Details
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Namespace Prefix: | cmcl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | cmcl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of assets arising from the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2024-01-01 -Paragraph 24 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2024-en-r&anchor=para_24_b&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
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Period Type: | instant

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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cmcl_AbercornMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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