XML 291 R129.htm IDEA: XBRL DOCUMENT
v3.23.1

Note 26 - Earnings Per Share - Earnings Per Share Computations (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) shares
Statement Line Items [Line Items] |  |  |
Issued shares at the beginning of year (note 24) (in shares) | 12,756,606 | 12,118,823 | 10,763,041
Weighted average shares issued (in shares) | 74,214 | 51,462 | 940,489
Weighted average (basic) at December 31 (in shares) | 12,830,820 | 12,170,285 | 11,703,530
Weighted average (basic) at December 31 (in shares) | 12,830,820 | 12,170,285 | 11,703,530
Effect of dilutive options (in shares) | 6,482 | 6,933 | 13,173
Weighted average number of shares (diluted) at December 31 (in shares) | 12,837,302 | 12,177,218 | 11,716,703
Profit for the year attributable to owners of the Company (basic and diluted) | $ | $ 17,903 | $ 18,405 | $ 20,780
Blanket Mine Employee Trust Adjustment | $ | (517) | (326) | (485)
Profit attributable to ordinary shareholders (basic and diluted) | $ | $ 17,386 | $ 18,079 | $ 20,295
Basic earnings per share - $ | 1.36 | 1.49 | 1.73
Diluted earnings per share - $ | 1.35 | 1.48 | 1.73

X
- Definition The adjusted amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator). + References No definition available. + Details
Name: | cmcl_AdjustedBasicEarningsLossPerShare
Namespace Prefix: | cmcl_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The adjusted amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. + References No definition available. + Details
Name: | cmcl_AdjustedDilutedEarningsLossPerShare
Namespace Prefix: | cmcl_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The adjusted weighted average number of ordinary shares outstanding at beginning of the year. + References No definition available. + Details
Name: | cmcl_AdjustedWeightedAverageNumberOfOrdinarySharesOutstandingAtBeginingOfYear
Namespace Prefix: | cmcl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Adjustment to profit (loss) for employee trust to calculate profit (loss) attributable to ordinary equity holders of the parent equity. + References No definition available. + Details
Name: | cmcl_AdjustmentToProfitLossForEmployeeTrust
Namespace Prefix: | cmcl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The profit (loss) attributable to owners of the parent after the employee trust adjustment. + References No definition available. + Details
Name: | cmcl_ProfitLossAttributableToOwnersOfParentAfterEmployeeTrustAdjustment
Namespace Prefix: | cmcl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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

X
- Definition The number of ordinary shares issued during the period multiplied by a time-weighting factor. + References No definition available. + Details
Name: | cmcl_WeightedAverageNumberOfSharesIssued
Namespace Prefix: | cmcl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of ordinary shares pre-consolidation during the period multiplied by a time-weighting factor. + References No definition available. + Details
Name: | cmcl_WeightedAverageNumberOfSharesPreconsolidation
Namespace Prefix: | cmcl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_70_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_AdjustedWeightedAverageShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of dilutive potential ordinary shares that relate to the assumed exercise of the entity's share options. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_70_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 81B -Subparagraph a -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_81B_a_ii&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ProfitLossAttributableToOwnersOfParent
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_70_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_WeightedAverageShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration