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Investments - Components (Details) - USD ($) $ in Thousands	Jan. 27, 2024	Apr. 29, 2023
Summary of Investment Holdings [Line Items]
Total investments	$ 20,835	$ 24,903
Investments to enhance returns on cash
Summary of Investment Holdings [Line Items]
Total investments	7,748	11,617
Investments to fund compensation/retirement plans
Summary of Investment Holdings [Line Items]
Total investments	13,087	13,286
Short-term investments
Summary of Investment Holdings [Line Items]
Marketable securities	6,533	5,043
Held-to-maturity investments	1,304	1,351
Total investments	7,837	6,394
Long-term investments
Summary of Investment Holdings [Line Items]
Marketable securities	$ 12,998	$ 18,509

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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