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Equity Incentive Plan - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Mar. 02, 2016
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Compensation Related Costs Disclosure [Line Items]          
Share-based compensation expense       $ 478,000 $ 471,000
2007 Equity Incentive Plan [Member]          
Compensation Related Costs Disclosure [Line Items]          
Common stock issuance, Grant 2,377,326        
Further number of shares, grants 0        
2016 Plan [Member]          
Compensation Related Costs Disclosure [Line Items]          
Common stock issuance, Grant   250,000   250,000  
2024 Plan [Member]          
Compensation Related Costs Disclosure [Line Items]          
Common stock issuance, Grant   200,000   200,000  
Employee Stock Option          
Compensation Related Costs Disclosure [Line Items]          
Number of available shares 1,698,090        
Restricted Stock [Member]          
Compensation Related Costs Disclosure [Line Items]          
Number of available shares 679,236        
Share-based compensation expense   $ 93,000 $ 92,000 $ 478,000 $ 471,000
Expected future expense       $ 669,000  
Remaining vesting periods       3 years 3 months  
Restricted Stock [Member] | Minimum [Member]          
Compensation Related Costs Disclosure [Line Items]          
Restricted shares vesting period       3 months  
Restricted Stock [Member] | Maximum [Member]          
Compensation Related Costs Disclosure [Line Items]          
Restricted shares vesting period       39 months