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Joint Venture (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Sep. 30, 2019
Other Liabilities [Member] |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Reduction in contract liabilities and costs to fulfill contract | $ 6,207 |  | $ 2,774 |  | $ 6,207 | $ 2,774 |
Woodward and General Electric Joint Venture [Member] |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Agreement to Form Joint Venture, Execution Date |  |  |  |  | Jan. 04, 2016 |  |
Ownership interest, joint venture | 50.00% |  |  |  | 50.00% |  |
Cash received annually from formation of joint venture |  | $ 4,894 |  | $ 4,894 | $ 4,894 |  |
Woodward and General Electric Joint Venture [Member] | Other Liabilities [Member] |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Contract liabilities | $ 68,735 |  |  |  | 68,735 |  | $ 69,079
Woodward and General Electric Joint Venture [Member] | Other Assets [Member] |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Costs to fulfill a contract | 68,735 |  |  |  | 68,735 |  | $ 69,079
Woodward and General Electric Joint Venture [Member] | Sales [Member] |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Amortization of deferred income recognized as an increase to sales | 802 |  | 2,013 |  | 4,331 | 5,712 |
Reduction to sales related to royalties owed to joint venture | $ 2,292 |  | $ 6,897 |  | $ 19,305 | $ 25,148 |

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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- Definition The annual cash inflow from the formation of a joint venture. The Company contributed certain contractual rights and intellectual property to the joint venture for which it had no cost basis. The joint venture partner paid the Company a lump sum and then will pay contingent consideration to the Company consisting of fiftenn annual payments for its ownership interest in the joint venture. + References No definition available. + Details
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