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Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2022 | Oct. 31, 2021
Change In Pension Benefits And Derivative Hedging Activities [Line Items] |  |  |  |
Other comprehensive income, deferred tax |  | $ 125 |  | $ 251
Cash Flow Hedging |  |  |  |
Change In Pension Benefits And Derivative Hedging Activities [Line Items] |  |  |  |
Other comprehensive income, deferred tax | $ 1,783 | $ 641 | $ 1,350 | $ 641

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