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Note 12 - Share-based Payments (Tables) | 12 Months Ended
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Dec. 31, 2021
Statement Line Items [Line Items] |
Explanation of effect of share-based payments on entity's profit or loss [text block] |
| Note |  | 2021 |  |  | 2020 |  |  | 2019 |
Restricted Share Units and Performance Units | 12.1(a) |  |  | 515 |  |  |  | 1,299 |  |  |  | 616 |
Caledonia Mining South Africa employee incentive scheme | 12.1(b) |  |  | (38 | ) |  |  | 114 |  |  |  | 73 |
|  |  |  | 477 |  |  |  | 1,413 |  |  |  | 689 |
Disclosure of indirect measurement of fair value of goods or services received, share options granted during period [text block] |
|  | December 31, |  |  | December 31, |
|  | 2021 |  |  | 2020 |
|  | RSUs |  |  | PUs |  |  | RSUs |  |  | PUs |
Risk free rate |  |  | 1.52 | % |  |  | 1.52 | % |  |  | 0.93 | % |  |  | 0.93 | %
Fair value (USD) |  |  | 12.06 |  |  |  | 11.63 |  |  |  | 15.88 |  |  |  | 15.51 |
Share price (USD) |  |  | 11.71 |  |  |  | 11.71 |  |  |  | 15.88 |  |  |  | 15.88 |
Performance multiplier percentage |  |  | – |  |  |  | 93-100 | % |  |  | – |  |  |  | 93-100 | %
Volatility |  |  | 1.20 |  |  |  | 1.06 |  |  |  | 1.00 |  |  |  | 1.06 |
Share units granted: |  | RSUs |  |  | PUs |  |  | RSUs |  |  | PUs |
Grant - January 11, 2019 |  |  | – |  |  |  | 95,740 |  |  |  | – |  |  |  | 95,740 |
Grant - March 23, 2019 |  |  | – |  |  |  | 28,287 |  |  |  | – |  |  |  | 28,287 |
Grant - June 8, 2019 |  |  | – |  |  |  | 14,672 |  |  |  | – |  |  |  | 14,672 |
Grant - January 11, 2020 |  |  | 17,585 |  |  |  | 114,668 |  |  |  | 17,585 |  |  |  | 114,668 |
Grant - March 31, 2020 |  |  | – |  |  |  | 1,971 |  |  |  | – |  |  |  | 1,971 |
Grant - June 1, 2020 |  |  | – |  |  |  | 1,740 |  |  |  | – |  |  |  | 1,740 |
Grant - September 9, 2020 |  |  | – |  |  |  | 1,611 |  |  |  | – |  |  |  | 1,611 |
Grant - September 14, 2020 |  |  | – |  |  |  | 20,686 |  |  |  | – |  |  |  | 20,686 |
Grant - October 5, 2020 |  |  | – |  |  |  | 514 |  |  |  | – |  |  |  | 514 |
Grant - January 11, 2021 |  |  | – |  |  |  | 78,875 |  |  |  | – |  |  |  | – |
Grant -April 1, 2021 |  |  | – |  |  |  | 770 |  |  |  | – |  |  |  | – |
Grant - May 14, 2021 |  |  | – |  |  |  | 2,389 |  |  |  | – |  |  |  | – |
Grant - June 1, 2021 |  |  | – |  |  |  | 1,692 |  |  |  | – |  |  |  | – |
Grant - June 14, 2021 |  |  | – |  |  |  | 507 |  |  |  | – |  |  |  | – |
Grant - August 13, 2021 |  |  | – |  |  |  | 2,283 |  |  |  | – |  |  |  | – |
Grant - September 1, 2021 |  |  | – |  |  |  | 553 |  |  |  | – |  |  |  | – |
Grant - September 6, 2021 |  |  | – |  |  |  | 531 |  |  |  | – |  |  |  | – |
Grant - September 20, 2021 |  |  | – |  |  |  | 526 |  |  |  | – |  |  |  | – |
Grant - October 1, 2021 |  |  | – |  |  |  | 2,530 |  |  |  | – |  |  |  | – |
Grant - October 11, 2021 |  |  | – |  |  |  | 500 |  |  |  | – |  |  |  | – |
Grant - November 12, 2021 |  |  | – |  |  |  | 1,998 |  |  |  | – |  |  |  | – |
Grant - December 1, 2021 |  |  | – |  |  |  | 936 |  |  |  | – |  |  |  | – |
RSU dividends reinvested |  |  | 1,066 |  |  |  | – |  |  |  | 386 |  |  |  | – |
Settlements/ terminations |  |  | - |  |  |  | (30,600 | ) |  |  | – |  |  |  | – |
Total awards |  |  | 18,651 |  |  |  | 343,379 |  |  |  | 17,971 |  |  |  | 279,889 |
Disclosure of indirect measurement of fair value of goods or services received, other equity instruments granted during period [text block] |
|  | 2021 |  |  | 2020 |
|  | Awards |
Grant – August 2018 (3-year term) |  |  | 5,918 |  |  |  | 5,918 |
Grant - August 2019 (3-year term) |  |  | 9,034 |  |  |  | 9,034 |
Awards paid out/ expired |  |  | (14,952 | ) |  |  | (11,941 | )
Total awards outstanding |  |  | – |  |  |  | 3,011 |
Estimated awards expected to vest |  |  | 100 | % |  |  | 100 | %

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- Definition The disclosure of information about indirect, by reference to the fair value of the equity instruments granted, measurement of the fair value of goods or services received as consideration for the entity's other equity instruments (ie other than share options). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The explanation that enables users of financial statements to understand the effect of share-based payment transactions on the entity's profit (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 50 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_50&doctype=Standard -URIDate 2021-03-24 + Details
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