v3.26.1
Income taxes - Schedule of Effective Income Tax Rate Reconciliation, current year (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Effective Income Tax Rate Reconciliation [Line Items]      
Tax Jurisdiction of Domicile [Extensible Enumeration] Australia    
Amount      
Tax (benefit) provision computed at the Australian Corporate statutory rate $ (212,605) $ 28,050 $ (7,640)
State taxes, net of federal tax benefit 793 0 0
Foreign tax rate differential   (1,700) (436)
Changes in valuation allowances   (37,791) 2,615
Other   103 519
Changes in unrecognized tax benefits   1,453 0
Share based Compensation   12,603 6,422
Total tax expense/(benefit) and effective tax rate $ (6,062) $ 6,560 $ 3,453
Percent      
Tax (benefit) provision computed at the Australian Corporate statutory rate 30.00% 30.00% 30.00%
State taxes, net of federal tax benefit (0.10%) 0.00% 0.00%
Effect of changes in tax laws or rates enacted in the current period   (1.80%) 1.70%
Changes in valuation allowances   (40.40%) (10.30%)
Other   0.10% (2.00%)
Changes in unrecognized tax benefits   1.60% 0.00%
Share based Compensation   13.50% (25.20%)
Total tax expense/(benefit) and effective tax rate 0.90% 7.00% (13.60%)
United States      
Amount      
Foreign tax rate differential $ 65,269    
Changes in valuation allowances 153,137    
Other $ 333    
Percent      
Effect of changes in tax laws or rates enacted in the current period (9.20%)    
Changes in valuation allowances (21.60%)    
Other 0.00%    
Canada      
Amount      
Foreign tax rate differential $ 5,288    
Changes in valuation allowances 47,022    
Other $ 2,184    
Percent      
Effect of changes in tax laws or rates enacted in the current period (0.70%)    
Changes in valuation allowances (6.60%)    
Other (0.30%)    
Other foreign jurisdictions      
Amount      
Foreign tax rate differential $ 2,168    
Changes in valuation allowances (15,115)    
Changes in unrecognized tax benefits $ 2,284    
Percent      
Effect of changes in tax laws or rates enacted in the current period (0.30%)    
Changes in valuation allowances 2.10%    
Changes in unrecognized tax benefits (0.30%)    
Australia      
Amount      
Changes in valuation allowances $ (3,041)    
Other 0    
Share based Compensation 58,513    
Inducement expense 33,540    
Financial asset movement gain (150,021)    
Other permanent differences $ 4,189    
Percent      
Changes in valuation allowances 0.40%    
Other 0.00%    
Share based Compensation (8.30%)    
Inducement expense (4.70%)    
Financial asset movement gain 21.20%    
Other permanent differences (0.60%)