Financial Instruments (Other Investments) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Sep. 30, 2023
Investment Holdings [Line Items]
Life Insurance Contracts	$ 44,338	$ 42,242
Other Investments	79,547	73,976
Equity Mutual Fund
Investment Holdings [Line Items]
Mutual Funds	18,464	15,837
Fixed Income Mutual Fund
Investment Holdings [Line Items]
Mutual Funds	$ 16,745	$ 15,897