Investment Securities (Schedule of Investment Securities) (Details) - USD ($) $ in Thousands	Dec. 02, 2023	Jun. 03, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	$ 206,774	$ 357,479
Unrealized Gains, Current	38	0
Unrealized Losses, Current	767	2,389
Estimated Fair Value, Current	206,045	355,090
Amortized Cost, Noncurrent	2,190	2,172
Unrealized Gains, Noncurrent	0	0
Unrealized Losses, Noncurrent	24	91
Estimated Fair Value, Noncurrent	2,166	2,081
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	6,141	16,571
Unrealized Gains, Current	0	0
Unrealized Losses, Current	108	275
Estimated Fair Value, Current	6,033	16,296
Commercial Paper [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	2,791	56,486
Unrealized Gains, Current	0	0
Unrealized Losses, Current	2	77
Estimated Fair Value, Current	2,789	56,409
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	98,202	139,979
Unrealized Gains, Current	0	0
Unrealized Losses, Current	535	1,402
Estimated Fair Value, Current	97,667	138,577
Certificates of Deposits [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	1,125	675
Unrealized Gains, Current	0	0
Unrealized Losses, Current	6	0
Estimated Fair Value, Current	1,119	675
US Government and Agency Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	88,470	101,240
Unrealized Gains, Current	0	0
Unrealized Losses, Current	116	471
Estimated Fair Value, Current	88,354	100,769
Asset Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	10,045	13,459
Unrealized Gains, Current	38	0
Unrealized Losses, Current	0	151
Estimated Fair Value, Current	10,083	13,308
Treasury Bills [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current		29,069
Unrealized Gains, Current		0
Unrealized Losses, Current		13
Estimated Fair Value, Current		29,056
Mutual Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Noncurrent	2,190	2,172
Unrealized Gains, Noncurrent	0	0
Unrealized Losses, Noncurrent	24	91
Estimated Fair Value, Noncurrent	$ 2,166	$ 2,081