Investments	9 Months Ended
Feb. 27, 2021
Investments Debt And Equity Securities [Abstract]
Investments	6. INVESTMENTS As of February 27, 2021, we had $9.0 million invested in a CD which matures in less than twelve months. The fair value of the investment was equal to the face value of the CD. As of May 30, 2020, we had $16.0 million invested in CDs which mature in less than twelve months. The fair value of these investments was equal to the face value of the CDs.

The entire disclosure for investment.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-URI http://asc.fasb.org/topic&trid=75115024

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-URI http://asc.fasb.org/topic&trid=2197064

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-URI http://asc.fasb.org/topic&trid=2196965

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