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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
Goodwill (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
Goodwill [Line Items]
Impairment charge	$ 8,777	$ 0
Aerospace [Member]
Goodwill [Line Items]
Impairment charge
Industrial [Member]
Goodwill [Line Items]
Impairment charge	8,777
Renewable Power Systems [Member]
Goodwill [Line Items]
Impairment charge	$ 8,777