Investments - Components (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Apr. 30, 2022
Investments
Total investments	$ 42,194	$ 51,537
Investments to enhance returns on cash
Investments
Total investments	18,997	27,239
Investments to fund compensation/retirement plans
Investments
Total investments	13,118	14,219
Other investments
Investments
Total investments	10,079	10,079
Short-term investments
Investments
Marketable securities	10,740	16,022
Held-to-maturity investments	1,213	1,337
Total investments	11,953	17,359
Long-term investments
Investments
Marketable securities	22,662	26,599
Cost basis investments	7,579	7,579
Total investments	$ 30,241	$ 34,178

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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