Commitments and Contingencies	12 Months Ended
Jun. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies Purchase Commitments The Company currently has arrangements with contract manufacturers and suppliers for the manufacture of its products. Those arrangements allow the contract manufactures to procure long lead-time component inventory based upon a rolling production forecast provided by the Company. The Company is obligated to purchase long lead-time component inventory that its contract manufacturer procures in accordance with the forecast, unless the Company gives notice of order cancellation outside of applicable component lead-times. As of June 30, 2020, the Company had non-cancelable commitments to purchase $38.0 million of inventory other services, which will be received and consumed during the first half of fiscal 2021. The Company expects to utilize its non-cancelable purchase commitments in the normal ongoing operations. Legal Proceedings The Company may from time to time be party to litigation arising in the course of its business, including, without limitation, allegations relating to commercial transactions, business relationships or intellectual property rights. Such claims, even if not meritorious, could result in the expenditure of significant financial and managerial resources. Litigation in general, and intellectual property in particular, can be expensive and disruptive to normal business operations. Moreover, the results of legal proceedings are difficult to predict. In accordance with applicable accounting guidance, the Company records accruals for certain of its outstanding legal proceedings, investigations or claims when it is probable that a liability will be incurred, and the amount of loss can be reasonably estimated. The Company evaluates, at least on a quarterly basis, developments in legal proceedings, investigations or claims that could affect the amount of any accrual, as well as any developments that would result in a loss contingency to become both probable and reasonably estimable. When a loss contingency is not both probable and reasonably estimable, the Company does not record a loss accrual. However, if the loss (or an additional loss in excess of any prior accrual) is at least a reasonable possibility and material, then the Company would disclose an estimate of the possible loss or range of loss, if such estimate can be made, or disclose that an estimate cannot be made. The assessment whether a loss is probable or a reasonable possibility, and whether the loss or a range of loss is estimable, involves a series of complex judgments about future events. Even if a loss is reasonably possible, the Company may not be able to estimate a range of possible loss, particularly where (i) the damages sought are substantial or indeterminate, (ii) the proceedings are in the early stages, or (iii) the matters involve novel or unsettled legal theories or a large number of parties. In such cases, there is considerable uncertainty regarding the ultimate resolution of such matters, including the amount of any possible loss, fine or penalty. Accordingly, for current proceedings, except as noted below, the Company is currently unable to estimate any reasonably possible loss or range of possible loss. However, an adverse resolution of one or more of such matters could have a material adverse effect on the Company's results of operations in a particular quarter or fiscal year. All currency conversions in this Legal Proceedings section are as of June 30, 2020. XR Communications, LLC d/b/a Vivato Technologies v. Extreme Networks, Inc. Patent Infringement Suit On April 19, 2017, XR Communications, LLC (“XR”) (d/b/a Vivato Technologies) filed a patent infringement lawsuit against the Company in the Central District of California. The operative Second Amended Complaint asserts infringement of U.S. Patent Nos. 7,062,296, 7,729,728, and 6,611,231 based on the Company’s manufacture, use, sale, offer for sale, and/or importation into the United States of certain access points and routers supporting multi-user, multiple-input, multiple-output technology. XR seeks unspecified damages, on-going royalties, pre- and post-judgment interest, and attorneys’ fees. In 2018, the Court stayed the case pending a resolution by the Patent Trial and Appeal Board (“PTAB”) of inter partes review (IPR) petitions filed by several defendants in other XR-related patent lawsuits challenging the validity of the asserted patents. The PTAB has now invalidated all asserted claims of the ’296 patent and ’728 patent and has found the challenged claims of the ’231 patent not invalid in view of the prior art asserted in the IPR instituted against that patent. The matter has been stayed and a status conference is set for November 23, 2020. The Company believes the claims are without merit and intends to defend them vigorously. Orckit IP, LLC v. Extreme Networks, Inc., Extreme Networks Ireland Ltd., and Extreme Networks GmbH On February 1, 2018, Orckit IP, LLC (“Orckit”) filed a patent infringement lawsuit against the Company and its Irish and German subsidiaries in the District Court in Dusseldorf, Germany. The lawsuit alleges direct and indirect infringement of the German portion of European Patent EP 1 958 364 B1 (“EP ’364”) based on the offer, distribution, use, possession and/or importation into Germany of certain network switches equipped with the ExtremeXOS operating system. Orckit is seeking injunctive relief, accounting, and an unspecified declaration of liability for damages and costs of the lawsuit. On May 3, 2018, Extreme Networks GmbH filed a separate nullity action in the Federal Patent Court in Munich, seeking to invalidate the asserted patents. After a hearing on January 28, 2020, the Court rendered a decision in the infringement case in favor of the Company. Orckit filed a notice of appeal on March 13, 2020 and submitted their Grounds of Appeal on April 20, 2020. Extreme filed its response to the Appeal on July 8, 2020. On April 23, 2019, Orckit filed and extension of the patent infringement complaint against the Company and its Irish and German subsidiaries in the District Court in Dusseldorf, Germany. With this extension, Orckit alleges infringement of the German portion of European Patent EP 3 068 077 B1 (“EP ‘077”) based on the offer, distribution, use, possession and/or importation into Germany of certain network switches. Orckit is seeking injunctive relief, accounting and sales information, and a declaration of liability for damages as well as costs of the lawsuit. The Company filed a nullity action with the German Federal Patent Court, seeking to invalidate the asserted patent. Orckit has filed its substantive reasons for opposing the Company’s nullity action on June 11, 2020. A hearing for the EP ‘077 infringement case has been scheduled for September 29, 2020. The Company believes that all claims in both cases are without merit and intends to defend them vigorously. Global Innovation Aggregators, LLC v. Extreme Networks, Inc.; Extreme Networks China Limited; Extreme Networks Technology (Beijing) Co., Ltd.; and Shenzhen Yingzhixiang Technology Co. In January 2019, Global Innovation Aggregators, LLC (“GIA”) filed six patent infringement lawsuits against the Company and its Chinese and Hong Kong subsidiaries and Shenzhen Yingzhixiang Technology Co., Ltd. in Shenzhen Intermediate People’s Court in China. In each lawsuit, GIA has accused a number of Summit switching products of infringing one of six patents. The parties reached a settlement in these cases, and all six cases have been dismissed. Shenzhen Dunjun Technology Ltd. v. Aerohive Networks (Hangzhou) Ltd.; Aerohive Networks, Inc.; and Yunqing Information Technology (Shenzhen) Ltd. On June 20, 2019, Shenzhen Dunjun Technology Ltd. (“Shenzhen Dunjun”) filed a patent infringement lawsuit against Aerohive Networks, Inc. (“Aerohive”), its Chinese subsidiary, and Yunqing Information Technology (Shenzhen) Ltd. in the Shenzhen Intermediate People’s Court in China. The lawsuit alleges infringement of a Chinese patent and seeks damages of RMB 10.0 million (USD $1.4 million). The trial originally scheduled for November 15, 2019 has been postponed by the Court, pending the jurisdictional objections filed by Aerohive. The Court rejected the jurisdictional challenge, and Aerohive appealed. A first hearing in the trial was held on July 30, 2020, and the Court subsequently scheduled a second hearing for September 4, 2020. The Company believes that the claims are without merit and intends to defend them vigorously. The Company cannot estimate at this time the possible loss or range of loss that may result from this action. Proven Networks, LLC v. Extreme Networks, Inc. On March 24, 2020, Proven Networks, LLC (“Proven”) filed a patent infringement lawsuit against the Company in the Northern District of California. The lawsuit alleges direct and indirect infringement of three U.S. patents based on the Company’s manufacture, use, sale, offer for sale, and/or importation into the United States of Extreme Analytics Extreme XOS, and certain network devices equipped with the Extreme XOS operating system. Proven seeks injunctive relief, unspecified damages, pre- and post-judgment interest, and attorneys’ fees. The Company believes that the claims are without merit and intends to defend them vigorously. A hearing on the Company’s motion to dismiss is scheduled for October 15, 2020. Given the uncertainty of litigation and the preliminary stage of the case, the Company cannot estimate at this time the possible loss or range of loss that may result from this action. DataCloud Technologies, LLC. v. Extreme Networks, Inc. On June 5, 2020, DataCloud Technologies, LLC. (“DataCloud”) filed a patent infringement lawsuit against the Company in the District of Delaware. The lawsuit alleges direct infringement of four U.S. patents based on Company’s shipping, distributing, making, using, importing, offering for sale, and/or selling of Extreme SLX Insight Architecture, Extreme Management Center, ExtremeSwitching switches, and ExtremeCloud Subscription Service. DataCloud seeks injunctive relief, monetary damages, interest, and attorneys’ fees. Given the uncertainty of litigation and the preliminary stage of the case, Extreme cannot estimate at this time the possible loss or range of loss that may result from this action. American Patents LLC v. Extreme Networks, Inc. On August 14, 2020, American Patents LLC filed a patent infringement lawsuit against the Company in the Western District of Texas. The complaint alleges direct and indirect infringement of certain U.S. patents and seeks injunctive relief, unspecified damages, on-going royalties, pre- and post-judgment interest, and attorneys’ fees. Given the uncertainty of litigation and the preliminary stage of the case, Extreme cannot estimate at this time the possible loss or range of loss that may result from this action. Indemnification Obligations Subject to certain limitations, the Company may be obligated to indemnify its current and former directors, officers and employees. These obligations arise under the terms of its certificate of incorporation, its bylaws, applicable contracts, and applicable law. The obligation to indemnify, where applicable, generally means that the Company is required to pay or reimburse, and in certain circumstances the Company has paid or reimbursed, the individuals' reasonable legal expenses and possibly damages and other liabilities incurred in connection with certain legal matters. The Company also procures Directors and Officers liability insurance to help cover its defense and/or indemnification costs, although its ability to recover such costs through insurance is uncertain. While it is not possible to estimate the maximum potential amount that could be owed under these governing documents and agreements due to the Company’s limited history with prior indemnification claims, indemnification (including defense) costs could, in the future, have a material adverse effect on the Company’s consolidated financial position, results of operations and cash flows.

Commitments and Contingencies

12 Months Ended

Jun. 30, 2020

Commitments And Contingencies Disclosure [Abstract]

10. Commitments and Contingencies

Purchase Commitments

The Company currently has arrangements with contract manufacturers and suppliers for the manufacture of its products. Those arrangements allow the contract manufactures to procure long lead-time component inventory based upon a rolling production forecast provided by the Company. The Company is obligated to purchase long lead-time component inventory that its contract manufacturer procures in accordance with the forecast, unless the Company gives notice of order cancellation outside of applicable component lead-times. As of June 30, 2020, the Company had non-cancelable commitments to purchase $38.0 million of inventory other services, which will be received and consumed during the first half of fiscal 2021. The Company expects to utilize its non-cancelable purchase commitments in the normal ongoing operations.

Legal Proceedings

The Company may from time to time be party to litigation arising in the course of its business, including, without limitation, allegations relating to commercial transactions, business relationships or intellectual property rights. Such claims, even if not meritorious, could result in the expenditure of significant financial and managerial resources. Litigation in general, and intellectual property in particular, can be expensive and disruptive to normal business operations. Moreover, the results of legal proceedings are difficult to predict.

In accordance with applicable accounting guidance, the Company records accruals for certain of its outstanding legal proceedings, investigations or claims when it is probable that a liability will be incurred, and the amount of loss can be reasonably estimated. The Company evaluates, at least on a quarterly basis, developments in legal proceedings, investigations or claims that could affect the amount of any accrual, as well as any developments that would result in a loss contingency to become both probable and reasonably estimable. When a loss contingency is not both probable and reasonably estimable, the Company does not record a loss accrual. However, if the loss (or an additional loss in excess of any prior accrual) is at least a reasonable possibility and material, then the Company would disclose an estimate of the possible loss or range of loss, if such estimate can be made, or disclose that an estimate cannot be made. The assessment whether a loss is probable or a reasonable possibility, and whether the loss or a range of loss is estimable, involves a series of complex judgments about future events. Even if a loss is reasonably possible, the Company may not be able to estimate a range of possible loss, particularly where (i) the damages sought are substantial or indeterminate, (ii) the proceedings are in the early stages, or (iii) the matters involve novel or unsettled legal theories or a large number of parties. In such cases, there is considerable uncertainty regarding the ultimate resolution of such matters, including the amount of any possible loss, fine or penalty. Accordingly, for current proceedings, except as noted below, the Company is currently unable to estimate any reasonably possible loss or range of possible loss. However, an adverse resolution of one or more of such matters could have a material adverse effect on the Company's results of operations in a particular quarter or fiscal year.

All currency conversions in this Legal Proceedings section are as of June 30, 2020.

XR Communications, LLC d/b/a Vivato Technologies v. Extreme Networks, Inc. Patent Infringement Suit

On April 19, 2017, XR Communications, LLC (“XR”) (d/b/a Vivato Technologies) filed a patent infringement lawsuit against the Company in the Central District of California. The operative Second Amended Complaint asserts infringement of U.S. Patent Nos. 7,062,296, 7,729,728, and 6,611,231 based on the Company’s manufacture, use, sale, offer for sale, and/or importation into the United States of certain access points and routers supporting multi-user, multiple-input, multiple-output technology. XR seeks unspecified damages, on-going royalties, pre- and post-judgment interest, and attorneys’ fees. In 2018, the Court stayed the case pending a resolution by the Patent Trial and Appeal Board (“PTAB”) of inter partes review (IPR) petitions filed by several defendants in other XR-related patent lawsuits challenging the validity of the asserted patents. The PTAB has now invalidated all asserted claims of the ’296 patent and ’728 patent and has found the challenged claims of the ’231 patent not invalid in view of the prior art asserted in the IPR instituted against that patent. The matter has been stayed and a status conference is set for November 23, 2020. The Company believes the claims are without merit and intends to defend them vigorously.

Orckit IP, LLC v. Extreme Networks, Inc., Extreme Networks Ireland Ltd., and Extreme Networks GmbH

On February 1, 2018, Orckit IP, LLC (“Orckit”) filed a patent infringement lawsuit against the Company and its Irish and German subsidiaries in the District Court in Dusseldorf, Germany. The lawsuit alleges direct and indirect infringement of the German portion of European Patent EP 1 958 364 B1 (“EP ’364”) based on the offer, distribution, use, possession and/or importation into Germany of certain network switches equipped with the ExtremeXOS operating system. Orckit is seeking injunctive relief, accounting, and an unspecified declaration of liability for damages and costs of the lawsuit. On May 3, 2018, Extreme Networks GmbH filed a separate nullity action in the Federal Patent Court in Munich, seeking to invalidate the asserted patents. After a hearing on January 28, 2020, the Court rendered a decision in the infringement case in favor of the Company. Orckit filed a notice of appeal on March 13, 2020 and submitted their Grounds of Appeal on April 20, 2020. Extreme filed its response to the Appeal on July 8, 2020.

On April 23, 2019, Orckit filed and extension of the patent infringement complaint against the Company and its Irish and German subsidiaries in the District Court in Dusseldorf, Germany. With this extension, Orckit alleges infringement of the German portion of European Patent EP 3 068 077 B1 (“EP ‘077”) based on the offer, distribution, use, possession and/or importation into Germany of certain network switches. Orckit is seeking injunctive relief, accounting and sales information, and a declaration of liability for damages as well as costs of the lawsuit. The Company filed a nullity action with the German Federal Patent Court, seeking to invalidate the asserted patent. Orckit has filed its substantive reasons for opposing the Company’s nullity action on June 11, 2020. A hearing for the EP ‘077 infringement case has been scheduled for September 29, 2020.

The Company believes that all claims in both cases are without merit and intends to defend them vigorously.

Global Innovation Aggregators, LLC v. Extreme Networks, Inc.; Extreme Networks China Limited; Extreme Networks Technology (Beijing) Co., Ltd.; and Shenzhen Yingzhixiang Technology Co.

In January 2019, Global Innovation Aggregators, LLC (“GIA”) filed six patent infringement lawsuits against the Company and its Chinese and Hong Kong subsidiaries and Shenzhen Yingzhixiang Technology Co., Ltd. in Shenzhen Intermediate People’s Court in China. In each lawsuit, GIA has accused a number of Summit switching products of infringing one of six patents. The parties reached a settlement in these cases, and all six cases have been dismissed.

Shenzhen Dunjun Technology Ltd. v. Aerohive Networks (Hangzhou) Ltd.; Aerohive Networks, Inc.; and Yunqing Information Technology (Shenzhen) Ltd.

On June 20, 2019, Shenzhen Dunjun Technology Ltd. (“Shenzhen Dunjun”) filed a patent infringement lawsuit against Aerohive Networks, Inc. (“Aerohive”), its Chinese subsidiary, and Yunqing Information Technology (Shenzhen) Ltd. in the Shenzhen Intermediate People’s Court in China. The lawsuit alleges infringement of a Chinese patent and seeks damages of RMB 10.0 million (USD $1.4 million). The trial originally scheduled for November 15, 2019 has been postponed by the Court, pending the jurisdictional objections filed by Aerohive. The Court rejected the jurisdictional challenge, and Aerohive appealed. A first hearing in the trial was held on July 30, 2020, and the Court subsequently scheduled a second hearing for September 4, 2020.

The Company believes that the claims are without merit and intends to defend them vigorously. The Company cannot estimate at this time the possible loss or range of loss that may result from this action.

Proven Networks, LLC v. Extreme Networks, Inc.

On March 24, 2020, Proven Networks, LLC (“Proven”) filed a patent infringement lawsuit against the Company in the Northern District of California. The lawsuit alleges direct and indirect infringement of three U.S. patents based on the Company’s manufacture, use, sale, offer for sale, and/or importation into the United States of Extreme Analytics Extreme XOS, and certain network devices equipped with the Extreme XOS operating system. Proven seeks injunctive relief, unspecified damages, pre- and post-judgment interest, and attorneys’ fees. The Company believes that the claims are without merit and intends to defend them vigorously.

A hearing on the Company’s motion to dismiss is scheduled for October 15, 2020. Given the uncertainty of litigation and the preliminary stage of the case, the Company cannot estimate at this time the possible loss or range of loss that may result from this action.

DataCloud Technologies, LLC. v. Extreme Networks, Inc.

On June 5, 2020, DataCloud Technologies, LLC. (“DataCloud”) filed a patent infringement lawsuit against the Company in the District of Delaware. The lawsuit alleges direct infringement of four U.S. patents based on Company’s shipping, distributing, making, using, importing, offering for sale, and/or selling of Extreme SLX Insight Architecture, Extreme Management Center, ExtremeSwitching switches, and ExtremeCloud Subscription Service. DataCloud seeks injunctive relief, monetary damages, interest, and attorneys’ fees. Given the uncertainty of litigation and the preliminary stage of the case, Extreme cannot estimate at this time the possible loss or range of loss that may result from this action.

American Patents LLC v. Extreme Networks, Inc.

On August 14, 2020, American Patents LLC filed a patent infringement lawsuit against the Company in the Western District of Texas. The complaint alleges direct and indirect infringement of certain U.S. patents and seeks injunctive relief, unspecified damages, on-going royalties, pre- and post-judgment interest, and attorneys’ fees. Given the uncertainty of litigation and the preliminary stage of the case, Extreme cannot estimate at this time the possible loss or range of loss that may result from this action.

Indemnification Obligations

Subject to certain limitations, the Company may be obligated to indemnify its current and former directors, officers and employees. These obligations arise under the terms of its certificate of incorporation, its bylaws, applicable contracts, and applicable law. The obligation to indemnify, where applicable, generally means that the Company is required to pay or reimburse, and in certain circumstances the Company has paid or reimbursed, the individuals' reasonable legal expenses and possibly damages and other liabilities incurred in connection with certain legal matters. The Company also procures Directors and Officers liability insurance to help cover its defense and/or indemnification costs, although its ability to recover such costs through insurance is uncertain. While it is not possible to estimate the maximum potential amount that could be owed under these governing documents and agreements due to the Company’s limited history with prior indemnification claims, indemnification (including defense) costs could, in the future, have a material adverse effect on the Company’s consolidated financial position, results of operations and cash flows.