Investment Securities (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	May. 30, 2015	May. 31, 2014	Jun. 01, 2013
Investment Securities [Abstract]
Proceeds from sale of available-for-sale securities	$ 146,800	$ 108,100	$ 188,100
Gross realized gains on sales of available-for-sale securities	82	8	24
Gross realized losses on sales of available-for-sale securities	7	2	676
Unrealized holding gains (losses) net of tax on available-for-sale securities	(149)	149	$ 256
Unrealized gain on long term available for sale securities in other comprehensive income	$ 59	$ 90