Investments - Components (Details) - USD ($) $ in Thousands	Oct. 23, 2021	Apr. 24, 2021
Investments
Total investments	$ 54,541	$ 55,404
Investments to enhance returns on cash
Investments
Total investments	31,029	32,475
Investments to fund compensation/retirement plans
Investments
Total investments	15,933	15,350
Other investments
Investments
Total investments	7,579	7,579
Short-term investments
Investments
Marketable securities	16,512	18,037
Held-to-maturity investments	1,371	2,532
Total investments	17,883	20,569
Long-term investments
Investments
Marketable securities	29,079	27,256
Cost basis investments	7,579	7,579
Total investments	$ 36,658	$ 34,835

Amount of investment in equity security without readily determinable fair value.

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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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