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Investments - Schedule of Investments (Details) - USD ($) $ in Thousands	Jan. 25, 2025	Apr. 27, 2024
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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