Quarterly report pursuant to Section 13 or 15(d)

Stockholders' equity - Schedule of equity awards (Detail)

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Stockholders' equity - Schedule of equity awards (Detail) - Employee Stock Option - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Mar. 31, 2024
Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock Options,Outstanding, beginning of period   107,993
Stock Options, Granted 1,076,538  
Stock Options, Expired (1,800)  
Stock Options, Forfeited (353)  
Stock Options, Outstanding, end of period 1,182,378  
Stock Options, Exercisable, end of period 36,984  
Weighted-average Exercise price, beginning of period   $ 31.88
Weighted-average Exercise Price, Granted $ 5.01  
Weighted-average Exercise Price, Expired 470.37  
Weighted-average Exercise Price, Forfeited 74.18  
Weighted-average Exercise Price, Exercise price, end of period 6.73  
Weighted-average Exercise Price, Exercisable, end of period $ 57.3  
Weighted-average Remaining Contractual Term, Outstanding 9 years 9 months 3 days 8 years 11 months 15 days
Weighted-average Remaining Contractual Term, Granted 9 years 10 months 28 days  
Weighted-average Remaining Contractual Term, Exercisable 6 years 9 months 10 days  
Aggregate Intrinsic Value, Outstanding $ 353,286 $ 11,888
Aggregate Intrinsic Value,Exercisable $ 1,685