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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

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