Financial Investments (Other Investments) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Investment Holdings [Line Items]
Cash Surrender Value of Life Insurance	$ 39,413	$ 39,970
Other Investments	129,715	132,545
Equity Mutual Fund [Member]
Investment Holdings [Line Items]
Fair Value	35,498	38,468
Fixed Income Mutual Fund [Member]
Investment Holdings [Line Items]
Fair Value	53,367	51,331
Insurance Company Stock [Member]
Investment Holdings [Line Items]
Fair Value	$ 1,437	$ 2,776

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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