Financial Investments (Other Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Investment Holdings [Line Items]
Cash Surrender Value of Life Insurance	$ 40,252	$ 39,970
Other Investments	135,022	132,545
Equity Mutual Fund [Member]
Investment Holdings [Line Items]
Fair Value	38,892	38,468
Fixed Income Mutual Fund [Member]
Investment Holdings [Line Items]
Fair Value	54,165	51,331
Insurance Company Stock [Member]
Investment Holdings [Line Items]
Fair Value	$ 1,713	$ 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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