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Stock-Based Compensation - Schedule of Nonvested Stock Awards and Performance Shares (Details) - $ / shares
12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2023
Restricted Stock      
Shares      
Beginning of period (in shares) 719,499 942,057 848,188
Granted (in shares) 325,789 385,438 674,932
Vested (in shares) (300,333) (546,997) (568,954)
Forfeited (in shares) (35,833) (60,999) (12,109)
End of period (in shares) 709,122 719,499 942,057
Performance shares outstanding (in shares) 709,122 719,499 942,057
Weighted- Average Grant Date Fair Value      
Beginning of period (in dollars per share) $ 19.72 $ 14.91 $ 18.13
Granted (in dollars per share) 32.76 24.12 12.83
Vested (in dollars per share) 20.72 14.70 17.30
Forfeited (in dollars per share) 24.63 18.22 14.56
End of period (in dollars per share) $ 25.04 $ 19.72 $ 14.91
Performance-based restricted stock      
Shares      
Beginning of period (in shares) 303,712 348,223 436,146
Granted (in shares) 96,603 183,396 249,534
Vested (in shares) (71,470) (210,176) (334,736)
Forfeited (in shares) (21,748) (17,731) (2,721)
End of period (in shares) 307,097 303,712 348,223
Performance shares outstanding (in shares) 307,097 303,712 348,223
Weighted- Average Grant Date Fair Value      
Beginning of period (in dollars per share) $ 19.48 $ 16.20 $ 17.76
Granted (in dollars per share) 36.86 20.80 14.17
Vested (in dollars per share) 23.36 15.24 16.80
Forfeited (in dollars per share) 23.51 18.96 15.20
End of period (in dollars per share) $ 23.76 $ 19.48 $ 16.20
Granted and vested in period (in shares)   108,108 92,104
Time-based restricted stock      
Shares      
Beginning of period (in shares) 415,787 593,834 412,042
Granted (in shares) 229,186 202,042 425,398
Vested (in shares) (228,863) (336,821) (234,218)
Forfeited (in shares) (14,085) (43,268) (9,388)
End of period (in shares) 402,025 415,787 593,834
Performance shares outstanding (in shares) 402,025 415,787 593,834
Weighted- Average Grant Date Fair Value      
Beginning of period (in dollars per share) $ 19.89 $ 14.15 $ 18.52
Granted (in dollars per share) 31.03 27.14 12.05
Vested (in dollars per share) 19.89 14.37 18.02
Forfeited (in dollars per share) 26.36 17.92 14.38
End of period (in dollars per share) $ 26.01 $ 19.89 $ 14.15
Nonvested stock awards and performance shares      
Shares      
Forfeited (in shares) (17,875)    
End of period (in shares) 89,345    
Performance shares outstanding (in shares) 89,345