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Accrued Liabilities (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 0 | $ 5,172 | $ (3,420) |
Hydraulics Systems and Engine Systems [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  | $ 5,172 | $ 1,083 | $ 5,008
Restructuring Reserve, Accrual Adjustment | $ 4,503 |  |  |

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