Investments - Components (Details) - USD ($) $ in Thousands	Jul. 29, 2023	Apr. 29, 2023
Summary of Investment Holdings [Line Items]
Total investments	$ 23,858	$ 24,903
Investments to enhance returns on cash
Summary of Investment Holdings [Line Items]
Total investments	10,646	11,617
Investments to fund compensation/retirement plans
Summary of Investment Holdings [Line Items]
Total investments	13,212	13,286
Short-term investments
Summary of Investment Holdings [Line Items]
Marketable Securities	7,402	5,043
Held-to-maturity investments	1,349	1,351
Total investments	8,751	6,394
Long-term investments
Summary of Investment Holdings [Line Items]
Marketable Securities	$ 15,107	$ 18,509