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Borrowings (RMB Facility Narrative) (Details)
$ in Thousands, R in Millions
Dec. 31, 2023
USD ($)
Dec. 31, 2023
ZAR (R)
Jun. 30, 2023
USD ($)
Jun. 30, 2023
ZAR (R)
Debt Instrument [Line Items]        
Short-term facility available $ 103,647      
Derivative Facilities [Member]        
Debt Instrument [Line Items]        
Short-term facility available 15,934      
Derivative Facilities [Member] | Rmb Loan Facilities [Member]        
Debt Instrument [Line Items]        
Short-term facility available 7,400 R 135.0   R 135.0
Line Of Credit $ 1,700 R 33.1 $ 1,800 R 33.1