Financial Instruments - Other Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Summary of Investment Holdings [Line Items]
Life Insurance Contracts	$ 44,808	$ 42,242
Total other investments	81,705	73,976
Equity Mutual Fund
Summary of Investment Holdings [Line Items]
Mutual Funds	19,523	15,837
Fixed Income Mutual Fund
Summary of Investment Holdings [Line Items]
Mutual Funds	$ 17,374	$ 15,897