Document and Entity Information - USD ($)	12 Months Ended
	Jun. 02, 2018	Jul. 23, 2018	Dec. 02, 2017
Entity Registrant Name	RICHARDSON ELECTRONICS LTD/DE
Entity Central Index Key	0000355948
Document Type	10-K
Trading Symbol	RELL
Document Period End Date	Jun. 02, 2018
Amendment Flag	false
Current Fiscal Year End Date	--06-02
Entity a Well-known Seasoned Issuer	No
Entity a Voluntary Filer	No
Entity's Reporting Status Current	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 71,200,000
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2018
Common Stock [Member]
Entity Common Stock, Shares Outstanding		10,806,069
Common Class B [Member]
Entity Common Stock, Shares Outstanding		2,136,919