Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Nov. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Legal Proceedings The Company is involved in various legal proceedings, including commercial, intellectual property, product liability, and regulatory matters of a nature considered normal for its business. The Company accrues for amounts related to these matters if it is probable that a liability has been incurred, and an amount can be reasonably estimated. The Company discloses such matters when there is at least a reasonable possibility that a material loss may have been incurred. However, the Company cannot predict the outcome of any litigation or the potential for future litigation. C.R. Bard, Inc. v. AngioDynamics, Inc. On January 11, 2012, C.R. Bard, Inc. ("Bard") filed a suit in the United States District Court of Utah claiming certain of the Company's implantable port products infringe on three U.S. patents held by Bard (US Patent Nos. 7,785,302 (“’302 Patent”), 7,959,615 (“’615 Patent”) and 7,947,022 (“’022 Patent”)). The case was stayed pending reexamination in the US Patent and Trademark Office ("USPTO"). Following the reexamination proceedings, and the parties’ related appeals to the Federal Circuit which resulted in further proceedings at the USPTO, certain claims of the ‘615 Patent were held invalid, while the remaining claims of the ‘615 Patent and the other two patents were upheld over the prior art references considered in the reexamination proceedings. Thereafter, the case was transferred from the District of Utah to the United States District Court for the District of Delaware ("District of Delaware"). A scheduling order was entered on March 23, 2021. On July 22, 2021, in another case against a different defendant the District of Utah invalidated multiple claims of the ‘302, ‘022, and ‘615 Patents under 35 USC §101, including claims asserted against the Company. Following the Utah court’s decision, the Company filed a Motion for Judgment on the Pleadings based on collateral estoppel on August 9, 2021. Bard filed its opposition brief on September 2, 2021 and the Company filed a reply on September 9, 2021. Following a hearing on the Motion for Judgment on the Pleadings on December 21, 2021, the District of Delaware stayed the case pending the Federal Circuit's resolution of Bard's appeal from the Utah Decision. Previously, the Company had filed a Motion for Leave to Amend its Answer and Counterclaims on April 14, 2021. This motion sought to add counterclaims for infringement of U.S. Patent Nos. 9,168,365; 9,895,523; and 10,632,295, as well as a counterclaim of inequitable conduct. On November 5, 2021, the Company notified the District of Delaware that the Utah decision was certified for appeal to the Court of Appeals for the Federal Circuit. Contemporaneously, the Company withdrew its Motion for Leave to Amend its Answer and Counterclaims without prejudice to refile. Bard filed its Opening Appellate Brief in its appeal at the Federal Circuit on December 8, 2021. The Company believes these claims are without merit and intends to defend them vigorously. The Company has not recorded an expense related to the outcome of this litigation because it is not yet possible to determine if a potential loss is probable nor reasonably estimable. On March 10, 2015, Bard and Bard Peripheral Vascular filed suit in the District of Delaware claiming certain of the Company's implantable port products infringe on three U.S. patents held by Bard (US Patent Nos. 8,475,417, 8,545,460, 8,805,478). The case proceeded through trial which began on March 4, 2019. At the close of Bard’s case, the Court granted the Company's oral motion for judgment as a matter of law as well as its motions for summary judgment on the grounds that the asserted patents are invalid, ineligible, not infringed and not willfully infringed. On May 10, 2019, the Company filed a motion for attorney fees and non-taxable expenses under 35 USC Sec. 285. Bard appealed the judgment to the Federal Circuit and on November 10, 2020, the Federal Circuit reversed the judgment in part with respect to Section 101 (subject matter eligibility), and vacated and remanded the trial court’s invalidity and non-infringement judgments. The Company filed a combined Petition for rehearing and rehearing en banc on December 10, 2020, which was denied on January 15, 2021. The Federal Circuit issued its mandate on January 22, 2021. On March 15, 2021, the District of Delaware entered an order requiring the parties to submit status reports and denied as moot the Company’s motion for attorney’s fees and expenses. The parties agreed to schedule trial the week of May 9, 2022, and the trial has been docketed on the Court's calendar. The Company maintains its belief that Bard’s claims are without merit. The Company has not recorded an expense related to the outcome of this litigation because it is not yet possible to determine if a potential loss is probable nor reasonably estimable. On March 8, 2021, Bard filed suit in the District of Delaware asserting certain of the Company’s port products (including certain related infusion sets) infringe U.S. Patent Nos. 8,025,639, 9,603,992 (“’992”) and 9,603,993 (“’993”). On May 20, 2021, the Company filed a Motion to Dismiss Bard’s claims with respect to the ’992 and ’993 patents. On July 22, 2021, the Company submitted the Utah court’s decision invalidating claims of the related ‘302, ‘022, and ‘615 Patents as supplemental authority in support of its Motion to Dismiss. The parties agreed to submit supplemental briefing to address the Utah court’s decision. Bard submitted its brief on August 12, 2021, and the Company submitted its reply on September 2, 2021. On December 21, 2021, the District of Delaware stayed the case pending the Federal Circuit's resolution of Bard's appeal of the Utah decision invalidating multiple claims the ‘302, ‘022, and ‘615 patents under 35 USC §101. The Company maintains its belief that Bard’s claims of the related are without merit. The Company has not recorded an expense related to the outcome of this litigation because it is not yet possible to determine if a potential loss is probable nor reasonably estimable. AngioDynamics, Inc. v. C.R. Bard, Inc. On May 30, 2017, the Company commenced an action in the United States District Court for the Northern District of New York entitled AngioDynamics, Inc. v. C.R. Bard, Inc. and Bard Access Systems, Inc. (“Bard”). In this action, the Company alleges that Bard has illegally tied the sales of its tip location systems to the sales of its PICCs. The Company alleges that this practice violates the federal antitrust laws and has had, and continues to have, an anti-competitive effect in the market for PICCs. The Company seeks both monetary damages and injunctive relief. Bard moved to dismiss on September 8, 2017. On August 6, 2018 the court denied Bard’s motion in its entirety. Bard made a motion for summary judgment which was denied in its entirety in a decision issued by the Court on May 5, 2021. Bard also raised a series of challenges targeted at one of AngioDynamics’ expert witnesses, which the Court denied in part and granted in part in decisions on May 5, 2021 and June 11, 2021. Discovery is largely complete, and trial is scheduled to commence on July 5, 2022.