Document and Entity Information - shares	6 Months Ended
	Dec. 02, 2017	Jan. 09, 2018
Entity Registrant Name	RICHARDSON ELECTRONICS LTD/DE
Entity Central Index Key	0000355948
Document Type	10-Q
Trading Symbol	RELL
Document Period End Date	Dec. 02, 2017
Amendment Flag	false
Current Fiscal Year End Date	--06-02
Entity a Well-known Seasoned Issuer	No
Entity a Voluntary Filer	No
Entity's Reporting Status Current	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		10,789,544
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2018
Class B Common [Member]
Entity Common Stock, Shares Outstanding		2,136,919