NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - New and Recently Issued Accounting Standards (Details)	12 Months Ended
	May 31, 2020	May 30, 2021
Accounting Standards Update 2016-02
New and Recently Issued Accounting Standards
Change in Accounting Principle, Accounting Standards Update, Adopted	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	May 27, 2019
Change in Accounting Principle, Accounting Standards Update, Early Adoption	false
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected	us-gaap:AccountingStandardsUpdate201602CumulativeEffectPeriodOfAdoptionMember
New Accounting Pronouncement or Change in Accounting Principle, Prior Period Not Restated	true
Accounting Standards Update 2016-13 | Subsequent Event
New and Recently Issued Accounting Standards
Change in Accounting Principle, Accounting Standards Update, Adopted		true
Change in Accounting Principle, Accounting Standards Update, Adoption Date		Jun. 01, 2020
Change in Accounting Principle, Accounting Standards Update, Early Adoption		false
Accounting Standards Update 2018-14
New and Recently Issued Accounting Standards
Change in Accounting Principle, Accounting Standards Update, Adopted	false
Change in Accounting Principle, Accounting Standards Update, Early Adoption	false
Accounting Standards Update 2020-04
New and Recently Issued Accounting Standards
Change in Accounting Principle, Accounting Standards Update, Adopted	false
Change in Accounting Principle, Accounting Standards Update, Early Adoption	false