Financial Instruments (Other Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Sep. 30, 2024
Investment Holdings [Line Items]
Life Insurance Contracts	$ 43,150	$ 44,808
Other Investments	71,952	81,705
Equity Mutual Fund
Investment Holdings [Line Items]
Mutual Funds	12,210	19,523
Fixed Income Mutual Fund
Investment Holdings [Line Items]
Mutual Funds	$ 16,592	$ 17,374