Benefit Plans - Schedule of Defined Benefit Plan, Fair Value of the Plan Assets and Funded Status (Details) - USD ($) $ in Thousands	5 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2023
Change in Benefit Obligation
Beginning balance, benefit obligation	$ 8,203	$ 7,332
Service cost	49	105
Interest cost	130	372
Participant contributions	0	0
Amendments	0	0
Total	(901)	(461)
Benefits paid	(149)	(634)
Business combinations and (divestitures)	0	0
Curtailments, settlements and/or special/contractual termination benefits	0	0
Ending balance, benefit obligation	7,332	6,714
Change in Plan Assets
Beginning balance, benefited plan assets	9,930	9,469
Actual return on plan assets	(312)	(214)
Company contributions	0	0
Participant contributions	0	0
Benefits paid	(149)	(634)
Expenses paid	0	0
Business combinations and (divestitures)	0	0
Curtailments, settlements and/or special/contractual termination benefits	0	0
Ending balance, benefited plan assets	9,469	8,621
Funded Status
Funded status at end of year	2,137	1,907
Amounts Recognized in Balance Sheets
Non-current assets	2,137	1,907
Current liabilities	0	0
Non-current liabilities	0	0
Amounts Recognized in Accumulated Other Comprehensive Income
Transition obligation (asset)	0	0
Prior service cost (credit)	0	0
Net loss (gain)	(441)	(350)
Net periodic pension cost
Service cost	49	105
Expected return on plan assets	(148)	(337)
Amortization of transition obligation (asset)	0	0
Amortization of prior service cost (credit)	0	0
Amortization of net loss (gain)	0	0
Recognition due to settlement, curtailment, and special/contractual termination benefits	0	0
Net periodic pension cost	$ 31	140
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Loss
Net loss (gain)	$ (441)	91
Prior service cost (credit)	0	0
Amortization of net (loss) gain	0	0
Amortization of prior service cost (credit)	0	0
Amortization of initial asset	0	0
Total recognized in other comprehensive (loss) income	(441)	91
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Updated census	(55)	(255)
Updated discount rate	(846)	(206)
Estimated Future Benefit Payments
2024	600	613
2025	579	575
2026	562	555
2027	575	567
2028	573	558
Thereafter	2,748	2,668
Total	$ 5,637	$ 5,536
Weighted Average Assumptions to Determine Benefit Obligations at Year End
Discount rate	5.60%	5.90%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	4.40%	5.60%
Expected long-term return on plan assets	3.70%	3.70%