Litigation	6 Months Ended
Dec. 01, 2018
Litigation [Abstract]
Litigation	12. LITIGATION On December 5, 2017, Steven H. Busch filed a Verified Stockholder Derivative Complaint against Edward J. Richardson, Paul Plante, Jacques Belin, James Benham, Kenneth Halverson and the Company in the Delaware Court of Chancery, captioned Steven H. Busch v. Edward J. Richardson, et al., C.A. No. 2017-0868-AGB. The lawsuit alleges claims for breach of fiduciary duty by the Company’s directors and challenges the decision of a special committee of the Company’s Board to refuse Mr. Busch’s demand that the Company’s Board, among other things, rescind the Company’s May 2013 repurchase of stock from Mr. Richardson and May 2013 and October 2014 repurchases of Company stock from the Richardson Wildlife Foundation. On September 21, 2018, the court heard oral arguments on the Company’s March 9, 2018 motion to dismiss the lawsuit. On November 14, 2018, the Court of Chancery issued a ruling granting defendant’s motion to dismiss and dismissed the case with prejudice. The plaintiff’s time to appeal the Court of Chancery dismissal expired December 14, 2018. No notice of appeal was filed. The case is concluded. On October 15, 2018, Varex Imaging Corporation (“Varex”) filed its original Complaint (Case No. 1:18-cv-06911) against Richardson Electronics Ltd. (“Richardson”) in the Northern District of Illinois, which was subsequently amended on November 27, 2018. Varex alleged counts of infringement of U.S. Patent Nos. 6,456,692 and 6,519,317. Subsequently, on October 24, 2018, Varex filed a motion for preliminary injunction to stop the sale of Richardson’s ALTA750^TM product. Richardson moved to dismiss this case and filed an opposition to the preliminary injunction. The Court will take these matters up at hearings on January 23, 28 and 29, 2019. The Company believes the lawsuit to be without merit and a loss is not probable or estimable based on the information at the time the financial statements were issued.

Litigation

6 Months Ended

Dec. 01, 2018

12. LITIGATION

On December 5, 2017, Steven H. Busch filed a Verified Stockholder Derivative Complaint against Edward J. Richardson, Paul Plante, Jacques Belin, James Benham, Kenneth Halverson and the Company in the Delaware Court of Chancery, captioned Steven H. Busch v. Edward J. Richardson, et al., C.A. No. 2017-0868-AGB. The lawsuit alleges claims for breach of fiduciary duty by the Company’s directors and challenges the decision of a special committee of the Company’s Board to refuse Mr. Busch’s demand that the Company’s Board, among other things, rescind the Company’s May 2013 repurchase of stock from Mr. Richardson and May 2013 and October 2014 repurchases of Company stock from the Richardson Wildlife Foundation. On September 21, 2018, the court heard oral arguments on the Company’s March 9, 2018 motion to dismiss the lawsuit. On November 14, 2018, the Court of Chancery issued a ruling granting defendant’s motion to dismiss and dismissed the case with prejudice. The plaintiff’s time to appeal the Court of Chancery dismissal expired December 14, 2018. No notice of appeal was filed. The case is concluded.

On October 15, 2018, Varex Imaging Corporation (“Varex”) filed its original Complaint (Case No. 1:18-cv-06911) against Richardson Electronics Ltd. (“Richardson”) in the Northern District of Illinois, which was subsequently amended on November 27, 2018. Varex alleged counts of infringement of U.S. Patent Nos. 6,456,692 and 6,519,317. Subsequently, on October 24, 2018, Varex filed a motion for preliminary injunction to stop the sale of Richardson’s ALTA750^TM product. Richardson moved to dismiss this case and filed an opposition to the preliminary injunction. The Court will take these matters up at hearings on January 23, 28 and 29, 2019. The Company believes the lawsuit to be without merit and a loss is not probable or estimable based on the information at the time the financial statements were issued.