Annual report pursuant to Section 13 and 15(d)

Equity and Stock-Based Compensation - Stock Options - Additional Information (Details)

v3.22.2.2
Equity and Stock-Based Compensation - Stock Options - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Intrinsic value of options outstanding $ 1.0    
Intrinsic value of options exercisable $ 0.7    
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock price $ 8.50    
Intrinsic value of stock options exercised $ 0.8 $ 0.8 $ 0.1
Stock Options | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Option vesting period 1 year    
Stock Options | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
Option vesting period 3 years