Document and Entity Information - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May 31, 2025 |
Jul. 28, 2025 |
Nov. 30, 2024 |
|
| Document Information [Line Items] | |||
| Entity Registrant Name | RICHARDSON ELECTRONICS, LTD. | ||
| Entity Central Index Key | 0000355948 | ||
| Document Type | 10-K | ||
| Trading Symbol | RELL | ||
| Document Period End Date | May 31, 2025 | ||
| Amendment Flag | false | ||
| Current Fiscal Year End Date | --05-31 | ||
| Entity a Well-known Seasoned Issuer | No | ||
| Entity a Voluntary Filer | No | ||
| Entity's Reporting Status Current | Yes | ||
| Entity Emerging Growth Company | false | ||
| Entity Shell Company | false | ||
| Entity Small Business | true | ||
| Entity Filer Category | Accelerated Filer | ||
| Entity Public Float | $ 168.2 | ||
| Document Fiscal Period Focus | FY | ||
| Document Fiscal Year Focus | 2025 | ||
| Entity File Number | 0-12906 | ||
| Entity Tax Identification Number | 36-2096643 | ||
| Entity Address, Address Line One | 40W267 Keslinger Road | ||
| Entity Address, Address Line Two | P.O. Box 393 | ||
| Entity Address, City or Town | LaFox | ||
| Entity Address, State or Province | IL | ||
| Entity Address, Postal Zip Code | 60147-0393 | ||
| City Area Code | 630 | ||
| Local Phone Number | 208-2200 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Entity Interactive Data Current | Yes | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Title of 12(b) Security | Common stock, $0.05 Par Value | ||
| Security Exchange Name | NASDAQ | ||
| ICFR Auditor Attestation Flag | true | ||
| Auditor Firm ID | 243 | ||
| Auditor Name | BDO USA, P.C. | ||
| Auditor Location | Chicago, IL, USA | ||
| Auditor Opinion [Text Block] | Opinion on the Consolidated Financial Statements We have audited the accompanying consolidated balance sheets of Richardson Electronics, Ltd. (the “Company”) as of May 31, 2025 and June 1, 2024, the related consolidated statements of comprehensive income, stockholders’ equity, and cash flows for each of the three fiscal years in the period ended May 31, 2025, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at May 31, 2025 and June 1, 2024, and the results of its operations and its cash flows for each of the three fiscal years in the period ended May 31, 2025, in conformity with accounting principles generally accepted in the United States of America. We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company's internal control over financial reporting as of May 31, 2025, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”) and our report dated August 4, 2025 expressed an unqualified opinion thereon. |
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| Documents Incorporated by Reference | Portions of the registrant’s Proxy Statement for the Annual Meeting of Stockholders scheduled to be held October 7, 2025, which will be filed pursuant to Regulation 14A, are incorporated by reference in Part III of this report. Except as specifically incorporated herein by reference, the above mentioned Proxy Statement is not deemed filed as part of this report. |
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| Common Stock | |||
| Document Information [Line Items] | |||
| Entity Common Stock, Shares Outstanding | 12,443,065 | ||
| Common Class B | |||
| Document Information [Line Items] | |||
| Entity Common Stock, Shares Outstanding | 2,049,238 |