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Note 19 - Inventories (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Statement Line Items [Line Items] |
Disclosure of components of inventories [text block] |
|  | 2019 |  |  | 2018 |
Consumable stores |  |  | 10,716 |  |  |  | 9,210 |
Gold in process |  |  | 376 |  |  |  | 217 |
|  |  | 11,092 |  |  |  | 9,427 |

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- Definition Tabular disclosure for inventories. + References No definition available. + Details
Name: | cmcl_DisclosureOfComponentsOfInventoriesTextBlock
Namespace Prefix: | cmcl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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