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Investments - Schedule of Sales and Maturities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 25, 2025 | Jan. 27, 2024 | Jan. 25, 2025 | Jan. 27, 2024
Sales of Marketable Securities |  |  |  |
Proceeds from sales | $ 1,490 | $ 1,381 | $ 11,715 | $ 21,849
Gross realized gains | 85 | 33 | 518 | 1,909
Gross realized losses | 0 | $ 0 | (35) | $ (740)
Fair Value of Available-For-Sale Securities By Contractual Maturity |  |  |  |
Debt securities with no single maturity | $ 6,300 |  | $ 6,300 |

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