Financial Investments (Other Investments) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Investment Holdings [Line Items]
Life Insurance Contracts	$ 41,827	$ 41,074
Other Investments	144,584	144,917
Equity Mutual Fund [Member]
Investment Holdings [Line Items]
Fair Value	37,291	40,660
Fixed Income Mutual Fund [Member]
Investment Holdings [Line Items]
Fair Value	64,840	62,339
Marketable Equity Securities [Member]
Investment Holdings [Line Items]
Fair Value	$ 626	$ 844

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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