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Investment Securities (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 02, 2018
Jun. 03, 2017
May 28, 2016
Investments, Debt and Equity Securities [Abstract]      
Proceeds from sale of available-for-sale securities $ 127,700 $ 248,200 $ 285,900
Gross realized gains on sales of available-for-sale securities 25 231 131
Gross realized losses on sales of available-for-sale securities $ 83 $ 7 $ 110