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The Incentive Stock Plans - Summary of Activity from Incentive Stock Plans (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Sep. 30, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Options granted, Options Outstanding 5,000 0  
Stock Options [Member]      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Shares Available for Grant, Beginning Balance 1,536,094    
Shares authorized, Shares Available for Grant 1,300,000    
Options granted, Shares Available for Grant (5,000)    
Options cancelled/forfeited/expired, Shares Available for Grant 10,000    
Restricted stock awards granted, Shares Available for Grant (834,903)    
Restricted stock awards forfeited, Shares Available for Grant 18,534    
Additional shares of stock issued, Shares Available for Grant (3,608)    
Shares Available for Grant, Ending Balance 2,021,117   1,536,094
Options Outstanding, Beginning Balance 62,750    
Options granted, Options Outstanding 5,000    
Options cancelled/forfeited/expired, Options Outstanding (10,000)    
Options exercised, Options Outstanding (1,000)    
Options Outstanding, Ending Balance 56,750   62,750
Exercisable as of March 31, 2023, Options Outstanding 51,749    
Aggregate Intrinsic Value $ 520   $ 893
Exercisable as of March 31, 2023, Aggregate Intrinsic Value $ 520    
Weighted Average Exercise Price, Beginning Balance $ 17.62    
Options granted, Weighted Average Exercise Price 31.22    
Options cancelled/forfeited/expired, Weighted Average Exercise Price 7.48    
Options exercised, Weighted Average Exercise Price 7.48    
Weighted Average Exercise Price, Ending Balance 20.78   $ 17.62
Exercisable as of March 31, 2023, Weighted Average Exercise Price $ 19.21    
Weighted Average Remaining Contractual Life 3 years   2 years 3 months 18 days
Options granted, Weighted Average Remaining Contractual Life 2 years    
Exercisable as of March 31, 2023, Weighted Average Remaining Contractual Life 2 years 3 months 18 days