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Stockholders' Equity - Activity under 2005 Stock Incentive Plan (Detail) - $ / shares
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Options Outstanding    
Balance, ending 4,885,999  
Weighted Average Exercise Price    
Balance, ending $ 8.91  
2005 Stock Incentive Plan    
Stock-based compensation expense    
Vesting period 4 years  
Shares Available for Grant    
Balance, beginning 679,790 944,527
Shares Added   3,000,000
Options Granted (228,817) (3,607,661)
Options Forfeited / Expired 607,010 342,924
Balance, ending 1,057,983 679,790
Options Outstanding    
Balance, beginning 4,617,211 1,562,995
Options Granted 228,817 3,607,661
Options Exercised (179,736) (210,521)
Options Forfeited / Expired (607,010) (342,924)
Balance, ending 4,059,282 4,617,211
Weighted Average Exercise Price    
Balance, beginning   $ 6.44
Options Granted $ 8.35 11.18
Options Exercised 3.40 3.52
Options Forfeited / Expired 10.62 10.75
Balance, ending 10.06  
Weighted average grant date fair value $ 4.56 $ 5.83
2005 Stock Incentive Plan | Maximum    
Stock-based compensation expense    
Option term 10 years  
2005 Stock Incentive Plan | Consultants    
Options Outstanding    
Options Granted 8,800