Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Stock Option Activity (Details)

v3.23.2
Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Jun. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Number of Shares        
Outstanding, beginning balance (in shares) 87,500 87,500    
Granted (in shares) 17,500      
Exercised (in shares) (31,250)      
Outstanding, ending balance (in shares) 73,750 87,500 87,500  
Exercisable (in shares) 73,750 87,500    
Outstanding, ending balance (in shares) 73,750 87,500 87,500  
Weighted Average Exercise Price        
Outstanding, beginning balance (in usd per share) $ 18.81 $ 18.81    
Granted (in usd per share) 35.00      
Exercised (in usd per share) 14.64      
Outstanding, ending balance (in usd per share) 24.42 18.81 $ 18.81  
Exercisable (in usd per share) 24.42 18.81    
Outstanding, ending balance (in usd per share) $ 24.42 $ 18.81 $ 18.81  
Weighted Average Remaining Contractual Life        
Outstanding, ending balance 1 year 4 months 17 days 9 months 10 days 1 year 9 months 10 days  
Exercisable 1 year 4 months 17 days 9 months 10 days    
Outstanding, ending balance 1 year 4 months 17 days 9 months 10 days 1 year 9 months 10 days  
Intrinsic value outstanding balance $ 762 $ 771 $ 1,626 $ 771
Exercisable $ 762 $ 771