Document and Entity Information - shares	9 Months Ended
	Feb. 25, 2017	Apr. 04, 2017
Entity Registrant Name	RICHARDSON ELECTRONICS LTD/DE
Entity Central Index Key	0000355948
Document Type	10-Q
Trading Symbol	RELL
Document Period End Date	Feb. 25, 2017
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	Q3
Document Fiscal Year Focus	2017
Common Stock [Member]
Entity Common Stock, Shares Outstanding		10,708,332
Common Class B [Member]
Entity Common Stock, Shares Outstanding		2,140,631