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Benefit Plans (Details) - Other Postretirement Benefits Plan - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2025 | Apr. 30, 2024 | Apr. 30, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block |  |  |
Employer discretionary contribution | $ 17,294 | $ 14,262 | $ 11,765
Common stock held by trustee of the 401K plan (shares) | 660,680 | 715,328 |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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- Details
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