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Equity-Accounted Investments And Other Long-Term Assets (Narrative-Equity-accounted Investments) (Details)
R / shares in Units, R in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 10, 2023
USD ($)
Aug. 10, 2023
ZAR (R)
R / shares
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Mar. 31, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
shares
Jun. 30, 2022
USD ($)
Dec. 31, 2023
shares
Sep. 30, 2022
R / shares
Jun. 30, 2021
USD ($)
Schedule of Equity Method Investments [Line Items]                        
Equity Method Investment Realized Gain Loss On Disposal           $ (161,000) $ 0 $ (205,000)        
Proceeds from disposal of equity-accounted investments           0 $ 3,508,000 656,000        
Carbon Tech Limited [Member]                        
Schedule of Equity Method Investments [Line Items]                        
Cash consideration received on transaction           500,000            
Equity Method Investment Realized Gain Loss On Disposal           $ 250,000            
Percentage of retained equity ownership interest disposed           25.00%            
Allowance for doubtful loans receivable                 $ 1,000,000.0      
Carbon Tech Limited [Member] | Loan [Member]                        
Schedule of Equity Method Investments [Line Items]                        
Debt, face value       $ 3,000,000                
Notes payable amount       $ 750,000                
Finbond [Member]                        
Schedule of Equity Method Investments [Line Items]                        
Investment shares owned | shares                   220,523,358    
Equity ownership percentage                   27.80%    
Cash consideration received on transaction $ 3,500,000 R 64.2                    
Sale price per share | R / shares   R 0.2911                    
Equity Method Investment Realized Gain Loss On Disposal $ 0             $ (400,000)        
Number of shares sold | shares               25,456,545        
Impairment loss on equity method investment     $ 1,200,000         $ 1,100,000        
Share price per share | R / shares   R 0.2911                 R 0.49  
Percentage of issued and outstanding shares owned by three shareholders               80.00%        
Liquidity discount       25.00%         15.00%      
Carbon [Member]                        
Schedule of Equity Method Investments [Line Items]                        
Investment amount owned                 $ 0      
Amount received at closing from interest sold     250,000                  
Sale of interest, amount owned in twelve months     $ 250,000                  
Sale of interest, remaining amount         $ 750,000              
Carbon [Member] | Carbon Tech Limited [Member]                        
Schedule of Equity Method Investments [Line Items]                        
Investment amount owned                 $ 0      
V2 Limited [Member]                        
Schedule of Equity Method Investments [Line Items]                        
Allowance for doubtful loans receivable                       $ 1,500,000
Working capital facility                       $ 1,500,000