Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Stock Option Expense (Detail)

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Stockholders' Equity - Schedule of Stock Option Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 830 $ 2,125 $ 1,641 $ 2,530
Research and Development [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense 249 572 493 663
General and Administrative [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 581 $ 1,553 $ 1,148 $ 1,867