Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Annual compound growth rate after 5 years assumption used to calculate the terminal value of the forecasted cash flows for the annual goodwill impairment test.

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Percent From Ratio Of Estimate Fair Value To Carrying Value

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Weighted average cost of capital assumption used to discount forecasted cash flows for the annual goodwill impairment test

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Goodwill (Narrative) (Details) - USD ($) $ in Thousands				12 Months Ended
Goodwill (Narrative) (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Jun. 30, 2019	Jun. 01, 2018	Sep. 30, 2019	Sep. 30, 2018
Goodwill [Line Items]
Goodwill					$ 257,447
Impairment				0
Assumed annual compound growth rate after ten years	3.39%
Percent premium from goodwill analysis on renewable power system	20.00%
Aerospace [Member]
Goodwill [Line Items]
Goodwill
Industrial [Member]
Goodwill [Line Items]
Goodwill					$ 257,447
Minimum [Member]
Goodwill [Line Items]
Weighted average cost of capital assumption	9.35%
Maximum [Member]
Goodwill [Line Items]
Weighted average cost of capital assumption	17.41%
Business Acquisition, Acquiree - L'Orange [Member]
Goodwill [Line Items]
Goodwill		$ 257,447
Business Acquisition, Acquiree - L'Orange [Member] \| Industrial [Member]
Goodwill [Line Items]
Goodwill			$ 257,447