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Note 32 - Dividends (Tables) | 12 Months Ended
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Dec. 31, 2019
Statement Line Items [Line Items] |
Disclosure of dividends paid [text block] |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Dividends paid to owners of the Company (Excluding NCI) |  |  | 2,968 |  |  |  | 2,908 |  |  |  | 2,904 |

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- Definition The disclosure of dividends paid. + References No definition available. + Details
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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