Financial Instruments (Other Investments) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Investment Holdings [Line Items]
Life Insurance Contracts	$ 42,411	$ 42,171
Other Investments	74,777	95,025
Equity Mutual Fund [Member]
Investment Holdings [Line Items]
Fair Value	16,504	19,506
Fixed Income Mutual Fund [Member]
Investment Holdings [Line Items]
Fair Value	$ 15,862	$ 33,348