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Note 36 - Group Entities - Intercompany Tranasctions With Holding Company (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Statement Line Items [Line Items]    
Loans advanced (repaid) $ (18,907) $ (6,390)
Interest received 576 1,263
Foreign exchange profits 370 448
Caledonia Holdings Zimbabwe (Private) Limited [member]    
Statement Line Items [Line Items]    
Loans advanced (repaid) (424) (4,479)
Interest received 536 1,263
Foreign exchange profits 0 0
Caledonia Mining Services Limited [member]    
Statement Line Items [Line Items]    
Loans advanced (repaid) 0 0
Interest received 0 0
Foreign exchange profits 0 0
Caledonia Mining South Africa Proprietary Limited [member]    
Statement Line Items [Line Items]    
Loans advanced (repaid) (4,293) (1,242)
Interest received 0 0
Foreign exchange profits 370 448
Greenstone Management Services Holdings Limited [member]    
Statement Line Items [Line Items]    
Loans advanced (repaid) (13,681) (2,098)
Interest received 0 0
Foreign exchange profits 0 0
Blanket Mine (1983) (Private) Limited [member]    
Statement Line Items [Line Items]    
Loans advanced (repaid) (509) 1,429
Interest received 40 0
Foreign exchange profits 0 0
Blanket Employee Trust Services (Private) Limited (BETS) [member]    
Statement Line Items [Line Items]    
Loans advanced (repaid) 0 0
Interest received 0 0
Foreign exchange profits 0 0
Motapa Mining Company UK Limited [member]    
Statement Line Items [Line Items]    
Loans advanced (repaid) 0 0
Interest received 0 0
Foreign exchange profits 0 0
Arraskar Investments (Private) Limited [member]    
Statement Line Items [Line Items]    
Loans advanced (repaid) 0 0
Interest received 0 0
Foreign exchange profits $ 0 $ 0