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Intangible Assets And Goodwill (Summary Of Intangible Assets And Related Accumulated Amortization) (Details) - USD ($)
$ in Thousands
6 Months Ended
Nov. 28, 2020
May 30, 2020
Finite-Lived Intangible Assets [Line Items]    
Gross $ 36,011 $ 31,798
Accumulated Amortization (14,949) (11,721)
Net 21,062 20,077
Customer Contracts And Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross 23,914 23,779
Accumulated Amortization (8,435) (6,707)
Net $ 15,479 17,072
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 $ 5,104 4,960
Accumulated Amortization (3,420) (2,735)
Net $ 1,684 2,225
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  
Backlog [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 17 months  
Gross $ 1,210 1,210
Accumulated Amortization (1,113) (694)
Net $ 97 516
Consultant List [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 3 years  
Gross $ 838 776
Accumulated Amortization $ (838) (718)
Net   58
Non-compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 3 years  
Gross $ 957 888
Accumulated Amortization (957) (821)
Net   67
Computer Software [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross 3,988 185
Accumulated Amortization (186) (46)
Net $ 3,802 $ 139
Computer Software [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 2 years  
Computer Software [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful lives 3 years 6 months