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Basis of Presentation (Additional Information) (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Oct. 31, 2025 | Oct. 31, 2024 | Oct. 31, 2025 | Oct. 31, 2024 | Apr. 30, 2025
Product Information [Line Items] |  |  |  |  |
Period reclassification adjustment amount |  | $ 565,000 |  | $ 901,000 |
Understated income tax expense |  | $ 153,000 |  | $ 238,000 |
Marketable Securities | $ 4,890,000 |  | $ 4,890,000 |  | $ 0
Net unrealized gains and losses recognized on our marketable securities | $ 266,000 |  | $ 317,000 |  |

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