XML 195 R79.htm IDEA: XBRL DOCUMENT v3.24.3
Stock-based Compensation Plans (Schedule of Share-based Compensation. Option Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Exercised, shares (517,839) (110,989) (36,731)  
Stock Options, Exercisable, Number 322,467      
2006 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Outstanding, shares 1,127,468 1,013,293 599,799  
Outstanding, Weighted average exercise price (per share) $ 12.60 $ 12.10 $ 12.19 $ 10.67
Outstanding, Weighted average remaining contractual term, years 7 years 10 months 24 days 7 years 9 months 18 days 7 years 8 months 12 days 7 years 9 months 18 days
Outstanding, Aggregate intrinsic value $ 8.5 $ 1.0 $ 0.3 $ 2.7
Granted, shares 457,356 573,279 457,482  
Granted, Weighted average exercise price (per share) $ 13.22 $ 11.41 $ 13.64  
Exercised, shares (517,839) (131,989) (36,731)  
Exercised, Weighted average exercise price (per share) $ 12.05 $ 9.59 $ 5.67  
Exercised, Aggregate intrinsic value $ 5.0 $ 0.4 $ 0.2  
Canceled, shares (135,215) (327,115) (7,257)  
Canceled, Weighted average exercise price (per share)  
Outstanding, shares 931,770 1,127,468 1,013,293 599,799
Stock Options, Exercisable, Number 322,467      
Exercisable, Weighted average exercise price (per share) $ 12.31      
Exercisable, Weighted average remaining contractual term, years 6 years 4 months 24 days      
Exercisable, Aggregate intrinsic value $ 3.0