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Financial Investments (Other Investments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Sep. 30, 2021
Investment Holdings [Line Items]    
Life Insurance Contracts $ 41,930 $ 44,560
Other Investments 96,566 149,632
Equity Mutual Fund [Member]    
Investment Holdings [Line Items]    
Fair Value 20,700 34,433
Fixed Income Mutual Fund [Member]    
Investment Holdings [Line Items]    
Fair Value $ 33,936 $ 70,639