Description of The Company	12 Months Ended
Jun. 02, 2012
Description of The Company [Abstract]
DESCRIPTION OF THE COMPANY	1. DESCRIPTION OF THE COMPANY Richardson Electronics, Ltd. is incorporated in the state of Delaware. We are a leading global provider of engineered solutions, power grid and microwave tubes and related components, and customized display solutions, serving customers in the alternative energy, aviation, broadcast, communications, industrial, marine, medical, military, scientific, and semiconductor markets. Our strategy is to provide specialized technical expertise and “engineered solutions” based on our core engineering and manufacturing capabilities. We provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair. Our products include electron tubes and related components, microwave generators, subsystems used in semiconductor manufacturing, and visual technology solutions. These products are used to control, switch or amplify electrical power signals, or used as display devices in a variety of industrial, commercial, medical, and communication applications.

The entire disclosure for the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets. If the entity operates in more than one business, the disclosure also indicates the relative importance of its operations in each business and the basis for the determination (for example, assets, revenues, or earnings).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6003-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 94-6

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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