Document and Entity Information - shares	6 Months Ended
	Dec. 01, 2018	Jan. 08, 2019
Document Information [Line Items]
Entity Registrant Name	RICHARDSON ELECTRONICS LTD/DE
Entity Central Index Key	0000355948
Document Type	10-Q
Trading Symbol	RELL
Document Period End Date	Dec. 01, 2018
Amendment Flag	false
Current Fiscal Year End Date	--06-01
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2019
Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		10,952,601
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		2,096,919