Investment Securities (Schedule of Unrealized Holding Gains (Losses)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 03, 2017	May 28, 2016	May 30, 2015
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses), net of tax on available-for-sale securities	$ 110	$ (9)	$ (87)
Current Investments
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses), net of tax on available-for-sale securities	(54)	22	(146)
Noncurrent Investments
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses), net of tax on available-for-sale securities	$ 164	$ (31)	$ 59