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Investments - Schedule of Investments (Details) - USD ($) $ in Thousands	Jul. 26, 2025	Apr. 26, 2025
Summary of Investment Holdings [Line Items]
Total investments	$ 15,356	$ 14,901
Investments to enhance returns on cash
Summary of Investment Holdings [Line Items]
Total investments	2,680	2,607
Investments to fund compensation/retirement plans
Summary of Investment Holdings [Line Items]
Total investments	12,676	12,294
Short-term investments
Summary of Investment Holdings [Line Items]
Marketable securities	46	10
Held-to-maturity investments	2,680	2,607
Total investments	2,726	2,617
Long-term investments
Summary of Investment Holdings [Line Items]
Marketable securities	$ 12,630	$ 12,284

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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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