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Joint Venture (Accounts Receivable, Accounts Payable, and Other Assets Related to JV) (Details) - Woodward and General Electric Joint Venture [Member] - USD ($)
$ in Thousands
Sep. 30, 2020
Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items]    
Accounts receivable $ 3,062 $ 5,906
Accounts payable 1,502 4,270
Other assets $ 9,123 $ 7,543