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Investments - Schedule of Investments (Details) - USD ($) $ in Thousands | Jan. 25, 2025 | Apr. 27, 2024
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Summary of Investment Holdings [Line Items] |  |
Total investments | $ 15,113 | $ 19,502
Investments to enhance returns on cash |  |
Summary of Investment Holdings [Line Items] |  |
Total investments | 2,594 | 6,754
Investments to fund compensation/retirement plans |  |
Summary of Investment Holdings [Line Items] |  |
Total investments | 12,519 | 12,748
Short-term investments |  |
Summary of Investment Holdings [Line Items] |  |
Marketable securities | 11 | 5,553
Held-to-maturity investments | 2,594 | 1,259
Total investments | 2,605 | 6,812
Long-term investments |  |
Summary of Investment Holdings [Line Items] |  |
Marketable securities | $ 12,508 | $ 12,690

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