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Consideration payable - Additional Information (Details) - USD ($)
12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Disclosure of contingent liabilities in business combination [abstract]      
Payments $ 0 $ 2,096,000  
Estimated additional consideration payable $ 0 $ 0 $ 1,894,000