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Note 17 - Trade and Other Receivables (Tables) | 12 Months Ended
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Dec. 31, 2017
Statement Line Items [Line Items] |
Disclosure of the components and trade and other receivables [text block] |
|  | 2017 |  |  | 2016 |
Bullion revenue receivable |  |  | 1,386 |  |  |  | 1,059 |
VAT receivables |  |  | 2,947 |  |  |  | 1,901 |
Deposits for stores and equipment and other receivables |  |  | 629 |  |  |  | 465 |
Total |  |  | 4,962 |  |  |  | 3,425 |

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- Definition Tabular disclosure of the components in trade and other receivables. + 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