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Intangible Assets And Goodwill (Summary Of Activity In Goodwill Balance) (Details) - USD ($)
$ in Thousands
9 Months Ended
Feb. 22, 2020
Feb. 23, 2019
Intangible Assets And Goodwill [Abstract]    
Goodwill, beginning of year $ 190,815 $ 191,950
Acquisitions- (see Note 3) 23,487  
Impact of foreign currency exchange rate changes (851) (801)
Goodwill, end of period $ 213,451 $ 191,149