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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) | 12 Months Ended
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Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2022
Income Tax Disclosure [Abstract] |  |  |
Federal statutory rate | 21.00% | 21.00% | 21.00%
Federal income tax credits | (3.10%) | (2.70%) | 5.40%
Stock compensation | (0.20%) | 0.20% | (0.30%)
Uncertain tax positions | 0.00% | (0.20%) | 1.70%
Meals and entertainment | 0.30% | 0.20% | (0.40%)
Foreign | 0.10% | 0.30% | 0.60%
Other | 1.50% | (0.40%) | (0.60%)
State income taxes, net of federal tax effect | 3.90% | 5.20% | 3.40%
Effective income tax rate | 23.50% | 23.60% | 30.80%

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