Investment Securities Available-for-Sale (Schedule of Contractual Maturities of Investment Securities) (Details) - USD ($) $ in Thousands	Nov. 29, 2025	May 31, 2025
Investment Securities Available-for-Sale [Abstract]
Within one year	$ 316,249
1-5 years	453,289
Total	$ 769,538	$ 892,708

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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