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Acquisitions and Divestitures (Narrative) (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jul. 21, 2025 | Sep. 30, 2025 | Sep. 30, 2024
Acquisitions And Divestitures [Line Items] |  |  |
Cash proceeds |  | $ 50,068 | $ 1,800
Cash receivables |  | 1,750 |
Pretax gain |  | $ 20,524 |
Date of divestiture |  | Mar. 03, 2025 |
Safran Electronics and Defense [Member] |  |  |
Acquisitions And Divestitures [Line Items] |  |  |
Acquisition date | Jul. 21, 2025 |  |
Percentage of outstanding equity interests acquired | 100.00% |  |
Total consideration | $ 41,678 |  |
Acquisition-related costs |  | $ 9,348 |

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