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Property, Plant, and Equipment (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Property, Plant and Equipment [Line Items] |  |  |  |  |
Net (gain) loss on sales of assets | [1] | $ (10) | $ 121 | $ (13,557) | $ 200
Impairment of assets held for sale |  |  |  | 37,902 |
Duarte Facility [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Net (gain) loss on sales of assets |  |  |  | (13,522) |
Disposal Groups [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Impairment of assets held for sale |  |  |  | 37,902 |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Duarte Facility [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, plant and equipment remaining |  | $ 2,520 |  | 2,520 |
Plant, Property and Equipment [Member] | Disposal Groups [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Impairment of assets held for sale |  |  |  | $ 13,813 |
[1] | Included in net (gain) loss on sale of assets for the six-months ended March 31, 2020 was the pre-tax gain on sale of Duarte real property in the amount of $13,522 recognized in the first quarter of fiscal year 2020.

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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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services at the Woodward Duarte facility that are not classified as held for sale as of the balance sheet date. + References No definition available. + Details
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