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Intangible Assets And Goodwill (Summary Of Intangible Assets And Related Accumulated Amortization) (Details) - USD ($)
$ in Thousands
9 Months Ended
Feb. 23, 2019
May 26, 2018
Finite-Lived Intangible Assets [Line Items]    
Gross $ 20,642 $ 20,793
Accumulated Amortization (5,072) (2,262)
Net 15,570 18,531
Customer Contracts And Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross 14,515 14,565
Accumulated Amortization (2,899) (1,263)
Net $ 11,616 13,302
Customer Contracts And Relationships [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 3 years  
Customer Contracts And Relationships [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 8 years  
Tradenames [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross $ 4,429 4,481
Accumulated Amortization (1,316) (560)
Net $ 3,113 3,921
Tradenames [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 3 years  
Tradenames [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 10 years  
Consultant List [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 3 years  
Gross $ 792 815
Accumulated Amortization (400) (205)
Net $ 392 610
Non-compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 3 years  
Gross $ 906 932
Accumulated Amortization (457) (234)
Net $ 449 $ 698