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Retirement Benefit Plans (Tables)
 12 Months Ended
Sep. 30, 2025
Retirement Benefits [Abstract]  
Schedule of Net Pension Expense for Defined Benefit Plans Net pension expense, benefit obligations and plan assets for the Company-sponsored defined benefit pension plans consist of the following:
 Years Ended
 September 30,
 20252024
Service cost$174 $181 
Interest cost944 1,072 
Expected return on plan assets(1,057)(1,046)
Amortization of net loss90 143 
Settlement cost— 60 
Net pension expense for defined benefit plans (non-operating expense)$151 $410 
Schedule of Roll Forward of Defined Benefit Pension Plan Obligations and Assets
The status of all defined benefit pension plans at September 30 is as follows:
20252024
Benefit obligations:
Benefit obligations at beginning of year$20,888 $20,345 
Service cost174 181 
Interest cost944 1,072 
Actuarial (gain) loss(898)1,313 
Benefits paid(1,874)(2,023)
Benefit obligations at end of year$19,234 $20,888 
Plan assets:
Plan assets at beginning of year$18,376 $17,194 
Actual return on plan assets1,568 3,076 
Employer contributions332 129 
Benefits paid(1,874)(2,023)
Plan assets at end of year$18,402 $18,376 
Underfunded status at end of year$(832)$(2,512)
Schedule of Net Plan Assets Recognized in the Consolidated Balance Sheets
 Plans in which
Assets Exceed Benefit
Obligations at
September 30,		Plans in which
Benefit Obligations
Exceed Assets at
September 30,
 2025202420252024
Reconciliation of funded status:
Plan assets in excess of (less than) projected benefit obligations$420 $— $(1,252)$(2,512)
Amounts recognized in accumulated other comprehensive income (loss):
Net loss1,459 — 642 3,599 
Prior service cost— — — — 
Net amount recognized in the consolidated balance sheets$1,879 $— $(610)$1,087 
Amounts recognized in the consolidated balance sheets are:
Other assets$420 $— $— $— 
Accrued liabilities— — (46)(47)
Pension liability— — (1,206)(2,465)
Accumulated other comprehensive income (loss) – pretax1,459 — 642 3,599 
Net amount recognized in the consolidated balance sheets$1,879 $— $(610)$1,087 
Schedule of Weighted-Average Assumptions Used in Developing Benefit Obligation and Net Pension Expense
Where applicable, the following weighted-average assumptions were used in developing the benefit obligation and the net pension expense for defined benefit pension plans:
 Years Ended September 30,
 20252024
Discount rate for liabilities5.1 %4.8 %
Discount rate for expenses4.9 %5.7 %
Expected return on assets6.2 %6.2 %
Schedule of Fair Values and Asset Allocation Ranges of Defined Benefit Plan Investments
The following tables set forth the asset allocation of the Company’s defined benefit pension plan assets and summarize the fair values and levels within the fair value hierarchy for such plan assets as of September 30, 2025 and 2024:
September 30, 2025Asset
Amount		Level 1
U.S. equity securities:
Large blend$3,499 $3,499 
Large growth1,712 1,712 
Mid blend861 861 
Small growth679 679 
Non-U.S. equity securities:
Foreign large blend614 614 
Diversified emerging markets1,034 1,034 
Global equity securities826 826 
U.S. debt securities:
Intermediate term bond4,977 4,977 
Multi-sector bond3,956 3,956 
Stable value:
Cash or money market244 244 
Total plan assets at fair value$18,402 $18,402 
September 30, 2024Asset
Amount		Level 1
U.S. equity securities:
Large blend3,796 3,796 
Large growth1,458 1,458 
Mid blend775 775 
Small growth633 633 
Non-U.S. equity securities:
Foreign large blend770 770 
Diversified emerging markets338 338 
Global equity securities702 702 
U.S. debt securities:
Intermediate term bond5,764 5,764 
Multi-sector bond3,697 3,697 
Stable value:
Cash or money market443 443 
Total plan assets at fair value$18,376 $18,376 
The “Asset Allocation Range” listed below anticipates these potential scenarios and provides flexibility for the plans’ investments to vary around the objective without triggering a reallocation of the assets, as noted by the following:
 Percent of Plan Assets at
September 30,		Asset
Allocation
Range
 20252024
U.S. equities37 %36 %
30% to 70%
Non-U.S. equities13 %10 %
0% to 20%
U.S. debt securities49 %52 %
20% to 70%
Non-U.S. debt securities— %— %
0% to10%
Other securities1 %2 %
0% to 60%
Total100 %100 %
Schedule of Projected Future Defined Benefit Plan Payments
The following defined benefit payment amounts are expected to be made in the future:
Years Ending
September 30,
Projected
Benefit Payments
2026$2,168 
20271,575 
20281,547 
20291,459 
20301,567 
2031-20356,878