XML 185 R48.htm IDEA: XBRL DOCUMENT
v3.20.1

Note 8 - Capital Management (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Statement Line Items [Line Items] |
Disclosure of capital components [text block] |
|  |  | 2019 |  |  |  | 2018 |
Total equity |  |  | 124,717 |  |  |  | 78,808 |

X
- Definition Tabular disclosure of the components in capital. + References No definition available. + Details
Name: | cmcl_DisclosureOfCapitalComponentsTextBlock
Namespace Prefix: | cmcl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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