Annual report pursuant to Section 13 and 15(d)

Stockholders' equity - Schedule of equity awards (Detail)

v3.22.2.2
Stockholders' equity - Schedule of equity awards (Detail) - Employee stock option - $ / shares
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock Options,Outstanding, beginning of period 702,064 70,154  
Stock Options, Exercisable, beginning of period 54,158 41,829  
Stock Options, Granted 36,000 640,320  
Stock Options, Forfeited   (8,410)  
Stock Options, Outstanding, end of period 738,064 702,064 70,154
Stock Options, Exercisable, end of period 275,174 54,158 41,829
Exercise price, beginning of period $ 7.16 $ 60.42  
Weighted-average Exercise Price, Exercisable, beginning of period 47.9 69.81  
Weighted-average Exercise Price, Granted 2.99 3.29  
Weighted-average Exercise Price, Forfeited   153.79  
Weighted-average Exercise Price, Exercise price, end of period 6.95 7.16 $ 60.42
Weighted-average Exercise Price, Exercisable, end of period $ 13.16 $ 47.9 $ 69.81
Weighted-average Remaining Contractual Term, Outstanding 7 years 2 months 4 days 8 years 25 days 2 years 10 months 20 days
Weighted-average Remaining Contractual Term, Exercisable 6 years 2 months 8 days 2 years 1 month 2 days 2 years 7 months 2 days
Weighted-average Remaining Contractual Term, Granted 9 years 5 months 12 days