Document and Entity Information	3 Months Ended
	Sep. 01, 2012	Oct. 08, 2012 Common Stock	Oct. 08, 2012 Class B Common Stock
Entity Registrant Name	RICHARDSON ELECTRONICS LTD/DE
Entity Central Index Key	0000355948
Document Type	10-Q
Document Period End Date	Sep. 01, 2012
Amendment Flag	false
Document Fiscal Year Focus	2013
Current Fiscal Year End Date	--06-01
Document Fiscal Period Focus	Q1
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		12,512,927	2,889,939