v3.25.1
Stockholders' equity - Schedule of equity awards (Detail) - Employee stock option [Member] - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Mar. 31, 2025
Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock Options,Outstanding, beginning of period 1,182,140  
Stock Options, Granted 3,470,000  
Stock Options, Expired 0  
Stock Options, Forfeited 0  
Stock Options, Outstanding, end of period 4,652,140 1,182,140
Stock Options, Exercisable, end of period 628,669  
Weighted-average Exercise price, beginning of period $ 6.58  
Weighted-average Exercise Price, Granted 12.16  
Weighted-average Exercise Price, Expired 0  
Weighted-average Exercise Price, Forfeited 0  
Weighted-average Exercise Price, Exercise price, end of period 10.75 $ 6.58
Weighted-average Exercise Price, Exercisable, end of period $ 10.42  
Weighted-average Remaining Contractual Term, Outstanding 9 years 5 months 15 days 9 years 6 months 3 days
Weighted-average Remaining Contractual Term, Granted 9 years 11 months 8 days  
Weighted-average Remaining Contractual Term, Exercisable 8 years 11 months 12 days  
Aggregate Intrinsic Value, Outstanding $ 2,342,847  
Aggregate Intrinsic Value, Granted $ 1,615,500  
Aggregate Intrinsic Value, Outstanding $ 12,160,372 $ 2,342,847
Aggregate Intrinsic Value,Exercisable $ 3,258,553