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Equity Incentive Plan (Tables)
 12 Months Ended
Sep. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Summary of Share-based Compensation Expense
The following table presents share-based compensation expense and the related tax benefit recognized during the periods presented. The Company recorded excess tax benefits (expense) of $(618), $(397), and $(224) related to share-based compensation awards for the years ended September 30, 2025, 2024 and 2023, respectively.
Year Ended September 30,
202520242023
Restricted stock units expense$2,630 $2,796 $3,366 
Performance share units expense1,237 997 874 
Stock option expense112 82 — 
Total stock-based compensation expense$3,979 $3,875 $4,240 
Tax benefit related to share-based compensation expense$620 $572 $778 
Summary Of The Status Of The Company's Restricted Stock Units And Changes
The following is a summary of the status of the Company’s restricted stock units as of September 30, 2025, and changes therein during the year then ended.
Number of
Shares
Awarded
Weighted Average Grant Date Fair Value
Outstanding at September 30, 20241,139,665 $12.49 
Granted
178,700 $12.59 
Released
(132,354)$14.25 
Forfeited
(200)12.94 
Outstanding at September 30, 2025 (1)1,185,811 $12.31 
Share-based Payment Arrangement, Performance Shares, Activity [Table Text Block]
The following is a summary of the status of the Company’s performance share units as of September 30, 2025, and changes therein during the year then ended. No awards were forfeited during the year ended September 30, 2025.
Number of
Shares
Awarded		Weighted Average Grant Date Fair Value
Outstanding at September 30, 2024213,445 14.45
Granted
135,300 12.58
Released
(50,445)17.80
Performance adjustment
(10,200)13.69
Outstanding at September 30, 2025288,100 13.01
Summary Of The Company's Stock Option Activity And Related Information For The Equity Plan
The following is a summary of the Company’s stock option activity and related information for the Equity Plan for the year ended September 30, 2025.
Number of
Stock Options		Weighted
Average
Exercise
Price		Weighted
Average
Remaining
Contractual
Life (years)		Aggregate
Intrinsic
Value
Outstanding at September 30, 20242,189,675 $15.40 2.56$— 
Granted12,000 $13.23 
Exercised
(107,400)$14.77 
Forfeited
(600)$12.94 
Expired
(863,800)$14.87 
Outstanding at September 30, 20251,229,875 $15.81 2.95$57,951 
Vested and exercisable, at September 30, 2025977,875 $16.55 1.54$1,551 
Vested or expected to vest, at September 30, 20251,229,875 $15.81 2.95$57,951 
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
The fair values of the stock options were estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions. There were no stock options granted during the year ended September 30, 2023.
 20252024
Expected dividend yield
8.54 %8.73 %
Expected volatility
29.14 %26.50 %
Risk-free interest rate
3.95 %4.18 %
Expected option term (in years)
5.396.38