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Accumulated Other Comprehensive Loss - Reclassification out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands | 3 Months Ended
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Jul. 31, 2024 | Jul. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Pension expense | $ 2,366 | $ 1,593
Reclassification out of Accumulated Other Comprehensive Loss |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Pension expense | $ 2,000 | $ 2,000

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