Financial Investments (Other Investments) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Sep. 30, 2017
Investment Holdings [Line Items]
Cash Surrender Value of Life Insurance	$ 39,453	$ 39,355
Other Investments	130,744	125,265
Equity Mutual Fund [Member]
Investment Holdings [Line Items]
Fair value	37,300	37,033
Fixed Income Mutual Fund [Member]
Investment Holdings [Line Items]
Fair value	51,201	45,727
Insurance Company Stock [Member]
Investment Holdings [Line Items]
Fair value	$ 2,790	$ 3,150

Includes cash surrender value of life insurance (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), available for sale securities - noncurrent (investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer), and other noncurrent investments not otherwise specified in the taxonomy.

No definition available.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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+ References

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