Other (Income) Expense, Net (Schedule of Other (Income) Expense, Net) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other (Income) Expense, Net [Abstract]
Equity interest in the earnings of the JV (Note 6)	$ (3,290)	$ (738)	$ (7,761)	$ (2,340)
Net loss (gain) on sales of assets	680	50	880	(404)
Rent income	(44)	(28)	(188)	(99)
Net gain on investments in deferred compensation program	(894)	(257)	(821)	(957)
Loss on forward option derivative instrument (Note 8)		5,543		5,543
Other components of net periodic pension and other postretirement benefit, excluding service cost and interest expense	(3,245)	(3,222)	(9,739)	(9,603)
Other	(123)	(373)	(505)	(731)
Other expense (income), net	$ (6,916)	$ 975	$ (18,134)	$ (8,591)

Amount of defined benefit plan cost (credit), classified as other.

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The premium (cost) of a hedge, expensed during the period.

+ References

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- Definition

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

+ References

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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The sum of the realized and unrealized net gain (loss) on trading securities during the period.

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Amount of income (expense) related to nonoperating activities, classified as other.

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Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement and are not individually material for disclosure in the notes.

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