Document and Entity Information	3 Months Ended
	Aug. 31, 2013	Oct. 07, 2013 Common Stock	Oct. 07, 2013 Class B Common Stock
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Trading Symbol	RELL
Entity Registrant Name	RICHARDSON ELECTRONICS LTD/DE
Entity Central Index Key	0000355948
Current Fiscal Year End Date	--05-30
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		11,877,968	2,190,644