v3.25.4
Financial risk management - Summary of Deposits Held which Derive Interest Revenue Together with the Maximum and Minimum Interest Rates Being Earned (Details) - Interest Rate Risk
$ in Thousands, $ in Thousands
 6 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
AUD ($)
Dec. 31, 2024
Jun. 30, 2025
USD ($)
Jun. 30, 2025
AUD ($)
USD          
Disclosure of Financial Risk Management [Line Items]          
Funds invested $ 42,049     $ 117,902  
Rate increase on funds invested 147     493  
Rate decrease on funds invested $ (147)     $ (493)  
Effect on profit from change in interest rate increase or decrease 10.00% 10.00%   10.00% 10.00%
USD | Bottom of range          
Disclosure of Financial Risk Management [Line Items]          
Funds invested percentage 3.49% 3.49%   4.18% 4.18%
Rate increase 3.84% 3.84%   4.60% 4.60%
Rate decrease 3.14% 3.14%   3.76% 3.76%
USD | Top of range          
Disclosure of Financial Risk Management [Line Items]          
Funds invested percentage 3.49% 3.49%   4.18% 4.18%
Rate increase 3.84% 3.84%   4.60% 4.60%
Rate decrease 3.14% 3.14%   3.76% 3.76%
AUD          
Disclosure of Financial Risk Management [Line Items]          
Funds invested   $ 41,174     $ 49,235
Rate increase on funds invested   148     185
Rate decrease on funds invested   $ (148)     $ (185)
Effect on profit from change in interest rate increase or decrease 10.00% 10.00% 10.00% 10.00% 10.00%
AUD | Bottom of range          
Disclosure of Financial Risk Management [Line Items]          
Funds invested percentage 3.10% 3.10%   3.35% 3.35%
Rate increase 3.41% 3.41%   3.69% 3.69%
Rate decrease 2.79% 2.79%   3.02% 3.02%
AUD | Top of range          
Disclosure of Financial Risk Management [Line Items]          
Funds invested percentage 4.01% 4.01%   4.21% 4.21%
Rate increase 4.41% 4.41%   4.63% 4.63%
Rate decrease 3.61% 3.61%   3.79% 3.79%