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Fair Value Measurements (Details) - USD ($) $ in Thousands	Jul. 26, 2025	Apr. 26, 2025
Assets
Total assets	$ 15,356	$ 14,901
Recurring basis
Assets
Marketable securities	12,676	12,294
Held-to-maturity investments	2,680	2,607
Total assets	15,356	14,901
Level 1 | Recurring basis
Assets
Marketable securities	0	0
Held-to-maturity investments	2,680	2,607
Total assets	2,680	2,607
Level 2 | Recurring basis
Assets
Marketable securities	2,465	2,470
Held-to-maturity investments	0	0
Total assets	2,465	2,470
Level 3 | Recurring basis
Assets
Marketable securities	0	0
Held-to-maturity investments	0	0
Total assets	0	0
NAV | Recurring basis
Assets
Marketable securities	10,211	9,824
Held-to-maturity investments	0	0
Total assets	$ 10,211	$ 9,824

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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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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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