Retirement Plan and Other Post-Retirement Benefits - Schedule of Expected Benefit Payments (Details) - Other Post-Retirement Benefits $ in Thousands	Sep. 30, 2024 USD ($)
Benefit Payments
2025	$ 25,736
2026	26,193
2027	26,534
2028	26,775
2029	26,804
2030 through 2034	128,836
Subsidy Receipts
2025	(1,696)
2026	(1,745)
2027	(1,782)
2028	(1,806)
2029	(1,829)
2030 through 2034	$ (9,197)

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Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

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