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Summary Of Significant Accounting Policies (Narrative) (Details)
 3 Months Ended 12 Months Ended
Aug. 29, 2020
segment
May 28, 2022
USD ($)
segment
May 29, 2021
USD ($)
May 30, 2020
USD ($)
Nov. 28, 2020
USD ($)
Summary Of Significant Accounting Policies [Line Items]          
Number of segments | segment 1 3      
Direct cost of services, primarily payroll and related taxes for professional services employees   $ 488,376,000 $ 388,112,000 $ 427,870,000  
Revenue   805,018,000 629,516,000 703,353,000  
Contingent consideration liability   0 7,100,000    
Asset impairment charges   833,000 935,000 649,000  
Goodwill impairment   0 0 0 $ 0
Reimbursements [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Revenue   4,100,000 3,200,000 9,400,000  
Sales Commissions [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Direct cost of services, primarily payroll and related taxes for professional services employees   $ 6,800,000 $ 5,900,000 $ 6,300,000  
Conversion Fees [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Revenue percentage   0.30% 0.30% 0.40%  
Permanent Placement Fees [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Revenue percentage   0.60% 0.60% 0.60%  
Minimum [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Intangible assets, useful lives   2 years      
Vesting period   3 years      
Maximum [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Intangible assets, useful lives   10 years      
Vesting period   4 years