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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2022 | Apr. 30, 2021 | Apr. 30, 2020
Condensed Statement of Income Captions [Line Items] |  |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax | $ 21,944 | $ (1,156) | $ (573)
Other Comprehensive Income (Loss), Tax | 8,687 | 18,344 | 24,702
Pension Plan, Defined Benefit [Member] |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax | 18,481 | $ (1,156) | $ (573)
Cash Flow Hedging |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |
Other Comprehensive Income (Loss), Tax | $ 3,463 |  |

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