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Note 36 - Group Entities - Subsidiaries of the Company (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 20, 2020
Dec. 31, 2022
Dec. 31, 2021
Statement Line Items [Line Items]      
Percentage of ownership 64.00%    
Caledonia Holdings Zimbabwe (Private) Limited [member]      
Statement Line Items [Line Items]      
Percentage of ownership   100.00% 100.00%
Caledonia Holdings Zimbabwe (Private) Limited [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%)   $ (6,683) $ (6,795)
Caledonia Mining Services Limited [member]      
Statement Line Items [Line Items]      
Percentage of ownership   100.00% 100.00%
Caledonia Mining Services Limited [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%)   $ 0 $ 0
Fintona Investments Proprietary Limited [member]      
Statement Line Items [Line Items]      
Percentage of ownership   100.00% 100.00%
Fintona Investments Proprietary Limited [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%)   $ 14,859 $ 14,859
Caledonia Mining South Africa Proprietary Limited [member]      
Statement Line Items [Line Items]      
Percentage of ownership   100.00% 100.00%
Caledonia Mining South Africa Proprietary Limited [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%)   $ (5,329) $ (1,406)
Greenstone Management Services Holdings Limited [member]      
Statement Line Items [Line Items]      
Percentage of ownership   100.00% 100.00%
Greenstone Management Services Holdings Limited [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%)   $ (36,597) $ (22,916)
Blanket Mine (1983) (Private) Limited [member]      
Statement Line Items [Line Items]      
Percentage of ownership [1]   64.00% 64.00%
Blanket Mine (1983) (Private) Limited [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%) [1]   $ 561 $ 1,030
Blanket Employee Trust Services (Private) Limited (BETS) [member]      
Statement Line Items [Line Items]      
Percentage of ownership [2]   0.00% 0.00%
Blanket Employee Trust Services (Private) Limited (BETS) [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%) [2]   $ 0 $ 0
Motapa Mining Company UK Limited [member]      
Statement Line Items [Line Items]      
Percentage of ownership   100.00% 0.00%
Motapa Mining Company UK Limited [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%)   $ 0 $ 0
Arraskar Investments (Private) Limited [member]      
Statement Line Items [Line Items]      
Percentage of ownership   100.00% 0.00%
Arraskar Investments (Private) Limited [member] | Elimination of intersegment amounts [member]      
Statement Line Items [Line Items]      
Net assets of Blanket Mine (100%)   $ 0 $ 0
[1] Refer to note 6 for the effective shareholding. NCI has a 13.2% (2021: 13.2%, (2020: 13.2%) interest in cash flows of Blanket only.
[2] BETS and the Community Trust are consolidated as structured entities.