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Accrued Liabilities (Accrued Liabilities) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
--- | --- | --- | --- | ---
Accrued Liabilities Current [Abstract] |  |  |  |
Salaries and other member benefits | $ 75,665 | $ 54,497 |  |
Product warranties and related liabilities (1) | 40,042 | 17,481 | $ 18,972 | $ 27,309
Interest payable | 13,481 | 14,822 |  |
Accrued retirement benefits | 2,779 | 2,825 |  |
Net current contract liabilities (Note 3) | 30,663 | 29,527 |  |
Current portion of accrued restructuring charges (2) | 1,083 | 4,495 |  |
Taxes, other than income | 21,159 | 19,453 |  |
Purchase of treasury stock in transit |  | 12,516 |  |
Other | 21,411 | 27,523 |  |
Accrued liabilities | $ 206,283 | $ 183,139 |  |

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