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Product Line Asset Sale (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Unallocated gain on product line asset sale | $ 0 | $ 0 | $ 1,941
Siron Compliance Business |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Unallocated gain on product line asset sale |  |  | $ 1,900

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