Document and Entity Information (USD $)	12 Months Ended
	Jun. 01, 2013	Dec. 01, 2012	Jul. 24, 2013 Common Stock	Jul. 24, 2013 Class B Common Stock
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jun. 01, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Trading Symbol	RELL
Entity Registrant Name	RICHARDSON ELECTRONICS LTD/DE
Entity Central Index Key	0000355948
Current Fiscal Year End Date	--06-01
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Public Float		$ 129,600,000
Entity Common Stock, Shares Outstanding			12,116,669	2,490,644