Financial Instruments (Other Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Investment Holdings [Line Items]
Life Insurance Contracts	$ 43,862	$ 42,242
Other Investments	78,744	73,976
Equity Mutual Fund
Investment Holdings [Line Items]
Mutual Funds	18,291	15,837
Fixed Income Mutual Fund
Investment Holdings [Line Items]
Mutual Funds	$ 16,591	$ 15,897