Investment Securities Available-for-Sale (Schedule of Investment Securities) (Details) - USD ($) $ in Thousands	Aug. 29, 2026	May 30, 2026
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 656,245	$ 817,793
Unrealized Gains	3	4
Unrealized Losses	2,198	957
Estimated Fair Value	654,050	816,840
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	6,267	12,362
Unrealized Gains	3	4
Unrealized Losses	0	0
Estimated Fair Value	6,270	12,366
Commercial Paper [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	19,234	42,562
Unrealized Gains	0	0
Unrealized Losses	9	16
Estimated Fair Value	19,225	42,546
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	459,391	569,137
Unrealized Gains	0	0
Unrealized Losses	1,739	742
Estimated Fair Value	457,652	568,395
Certificates of Deposits [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,746	3,226
Unrealized Gains	0	0
Unrealized Losses	8	6
Estimated Fair Value	2,738	3,220
US Government and Agency Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	135,650	153,172
Unrealized Gains	0	0
Unrealized Losses	424	187
Estimated Fair Value	135,226	152,985
Treasury Bills [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	32,957	37,334
Unrealized Gains	0	0
Unrealized Losses	18	6
Estimated Fair Value	$ 32,939	$ 37,328

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), clasified as current.

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