Share-Based Compensation Expense for Stock Awards (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share-based compensation expense | $ 813 | $ 2,324 | $ 2,372 | $ 4,863 |
| Research and Development | ||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share-based compensation expense | 201 | 658 | 850 | 1,280 |
| General and administrative | ||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share-based compensation expense | $ 612 | $ 1,666 | $ 1,522 | $ 3,583 |