Investment Securities (Narrative) (Details) - USD ($)	12 Months Ended
May 30, 2020	Jun. 01, 2019	Jun. 02, 2018
Noncurrent Assets
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale securities	$ 1,200,000	$ 84,000	$ 42,000
Gross realized gains on sales of available-for-sale securities	611,000	48,000	23,000
Gross realized losses on sales of available-for-sale securities	0
Current Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Proceeds from sale of available-for-sale securities	204,300,000	209,700,000	127,600,000
Gross realized gains on sales of available-for-sale securities	278,000	9,000	25,000
Gross realized losses on sales of available-for-sale securities	$ 6,000	$ 33,000	$ 83,000

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

No definition available.

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- Definition

This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

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- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121553693&loc=d3e26853-111562

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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