Document and Entity Information - shares	3 Months Ended
	Aug. 27, 2016	Oct. 03, 2016
Entity Registrant Name	RICHARDSON ELECTRONICS LTD/DE
Entity Central Index Key	0000355948
Document Type	10-Q
Trading Symbol	RELL
Document Period End Date	Aug. 27, 2016
Amendment Flag	false
Current Fiscal Year End Date	--05-27
Entity a Well-known Seasoned Issuer	No
Entity a Voluntary Filer	No
Entity's Reporting Status Current	Yes
Entity Filer Category	Accelerated Filer
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2017
Common Stock [Member]
Entity Common Stock, Shares Outstanding		10,702,932
Common Class B [Member]
Entity Common Stock, Shares Outstanding		2,140,631