Acquisitions And Dispositions (Summary Of Recognized Amounts Of Assets Acquired And Liabilities Assumed) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 30, 2020	May 25, 2019	May 26, 2018
Business Acquisition [Line Items]
Goodwill	$ 214,067	$ 190,815	$ 191,950
Expertence [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	11
Accounts receivable	215
Prepaid expenses and other current assets	7
Intangible assets	184
Total identifiable assets	417
Accounts payable and accrued expenses	196
Accrued expenses and other current liabilities	8
Deferred tax liability	59
Total liabilities assumed	263
Net identifiable assets acquired	154
Goodwill	534
Net assets acquired	688
Veracity [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	2,056
Accounts receivable	3,299
Prepaid expenses and other current assets	116
Property and equipment	117
Total identifiable assets	16,668
Accounts payable and accrued expenses	305
Accrued expenses and other current liabilities	712
Total liabilities assumed	1,017
Net identifiable assets acquired	15,651
Goodwill	22,953
Net assets acquired	38,604
Taskforce [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	974
Accounts receivable	1,930
Prepaid expenses and other current assets	45
Intangible assets	5,727
Property and equipment	39
Total identifiable assets	8,715
Accounts payable and accrued expenses	2,116
Accrued salaries and related obligations	16
Other current liabilities	140
Total liabilities assumed	2,272
Net identifiable assets acquired	6,443
Deferred tax liability	(1,815)
Goodwill	8,749
Net assets acquired	13,377
Accretive [Member]
Business Acquisition [Line Items]
Accounts receivable	11,360
Prepaid expenses and other current assets	1,084
Intangible assets	15,200
Property and equipment	979
Total identifiable assets	28,623
Accounts payable and accrued expenses	3,649
Accrued salaries and related obligations	4,562
Other current liabilities	136
Total liabilities assumed	8,347
Net identifiable assets acquired	20,276
Goodwill	11,525
Net assets acquired	$ 31,801
Computer Software [Member]
Business Acquisition [Line Items]
Intangible assets, useful lives	2 years
Computer Software [Member] | Expertence [Member]
Business Acquisition [Line Items]
Intangible assets, useful lives	24 months
Backlog [Member]
Business Acquisition [Line Items]
Intangible assets, useful lives	17 months
Backlog [Member] | Veracity [Member]
Business Acquisition [Line Items]
Intangible assets	$ 1,210
Intangible assets, useful lives	17 months
Customer Relationships [Member] | Veracity [Member]
Business Acquisition [Line Items]
Intangible assets	$ 9,300
Intangible assets, useful lives	7 years
Trademarks [Member] | Veracity [Member]
Business Acquisition [Line Items]
Intangible assets	$ 570
Intangible assets, useful lives	3 years