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Cybersecurity Risk Management, Strategy and Governance | 12 Months Ended
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Jun. 30, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items] |
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] | Item 1C. Cybersecurity. Cybersecurity Processes and Risk Assessment We rely on the cybersecurity program implemented by GECM. In order to assess, identify and manage material risks from cybersecurity threats, GECM has implemented a cybersecurity program for GEG and its subsidiaries, which is focused on (i) protecting the confidentiality of business, client, fund investor and employee information; (ii) maintaining the security and availability of its systems and data; (iii) supporting compliance with applicable laws and regulations; (iv) documenting cybersecurity incidents and its responses; and (v) notification of cybersecurity incidents to, and communications with, appropriate internal and external parties. GECM has implemented an information security policy governing cybersecurity risk, which is designed to facilitate the protection of sensitive or confidential business, client, investor and employee information that it stores or processes and the maintenance of critical services and systems. This program is based on recognized industry standards that we use to help us identify, assess and manage cybersecurity risks and is supported by both management and our Board. These processes and systems are designed to protect against unauthorized access of information, including by cyber-attacks. GECM's policies and processes include, as appropriate, encryption, data loss prevention technology, authentication technology, entitlement management, access control, anti-virus and anti-malware software, spam and phishing email filtering, and transmission of data over private networks. GECM’s processes and systems aim to prevent or mitigate two main types of cybersecurity risk: (1) cybersecurity risks associated with its physical and digital devices and infrastructure, and (2) cybersecurity risks associated with third parties, such as people and organizations who have access to its devices, infrastructure or confidential or sensitive information. As a part of its cybersecurity program, GECM's cybersecurity processes and systems are reviewed and assessed by third parties. These third parties provide external expertise in all aspects of our cybersecurity program and assess and report on GECM’s compliance with applicable laws and regulations and its internal incident response preparedness, including benchmarking to best practices and industry frameworks. These third parties also help identify areas for continued focus and improvement. Annual penetration testing of its network, including critical systems and systems that store confidential or sensitive information, is conducted with third-party consultants and vulnerabilities are reviewed by Great Elm’s Information Technology & Security Committee (IT Committee), comprised of GECM's Chief Operating Officer and other members of Company management as well as its third-party IT consultant. In order to oversee and identify risks from cybersecurity threats associated with its use of large vendors and material third parties who will have access to sensitive data or client systems and facilities, GECM requires these parties to adhere to GECM's cybersecurity requirements prior to accessing such data. In addition, GECM performs periodic reviews of its critical vendors with the assistance of a third-party consultant to identify and assess the vendors’ security posture to reduce risk to the Company. In May 2024, the SEC adopted amendments to Regulation S-P, which, beginning in December 2025, requiring investment companies and SEC-registered investment advisers to adopt written policies and procedures for incident response programs to address unauthorized access to, or use of, customer information, including providing notice to certain individuals affected by any such incident. GECM will need to comply with this amended rule beginning December 2025. With the SEC particularly focused on cybersecurity, we expect increased scrutiny of our policies and systems designed to manage cybersecurity risks and related disclosures. GECM also provides its employees with cybersecurity awareness training at onboarding and semiannually, as well as interim security reminders and alerts. GECM’s third-party consultants conduct regular phishing tests and provide additional training as appropriate. Governance and Oversight of Cybersecurity Risks GECM’s cybersecurity program is managed by the IT Committee. The members of the IT Committee collectively have over fifty years of experience helping to oversee the information technology infrastructure and processes at GECM and other asset managers in both operations and IT infrastructure leadership roles. Third-party consultants with specific education and over 25 years' experience in IT Infrastructure and Cybersecurity are utilized to provide additional technical insight and recommendations. The IT Committee is responsible for supervising and interfacing with providers to implement GECM’s monitoring and alert response processes, vulnerability management, changes made to its critical systems, including software and network changes, and various other technological and administrative safeguards. GECM has also developed an incident response framework to monitor the prevention, detection, mitigation and remediation of cybersecurity events. This framework is managed and implemented by the IT Committee, with support from their third-party consultants. The IT Committee alongside the General Counsel and Chief Compliance Officer of GECM are responsible for gathering information with respect to cybersecurity incidents, assessing their severity and determining potential responses, as well as communicating with business leaders and senior management, and the Board of Directors, as appropriate. Our Board monitors cybersecurity risk as part of Great Elm's overall risk management program. Our Board has delegated the primary responsibility for oversight and review of guidelines and policies with respect to risk assessment and risk management to the Audit Committee, which includes oversight of risks related to cybersecurity threats. The Audit Committee and the Board, as appropriate, are informed about risks related to cybersecurity threats through periodic reports from GECM's Chief Operating Officer. Such reporting includes updates on GECM’s cybersecurity program, the external threat environment, and GECM’s programs to address and mitigate the risks associated with the evolving cybersecurity threat environment. These reports also include updates on GECM’s preparedness, prevention, detection, responsiveness and recovery with respect to cyber incidents, where applicable. Impact of Cybersecurity Risks As of the filing of this Form 10-K, we are not aware of any cyber-attacks that have occurred that have materially affected, or are reasonably likely to materially affect us, including our business strategy, results of operations or financial condition. We acknowledge that we cannot eliminate all security risks within our organization, and we cannot guarantee that any undetected cybersecurity incidents have occurred. For additional information about these risks, see "Item 1A. Risk Factors" in this Annual Report on Form 10-K.
Cybersecurity Risk Management Processes Integrated [Text Block] | identify and manage material risks from cybersecurity threats
Cybersecurity Risk Management Third Party Engaged [Flag] | true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] | true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] | true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block] | As of the filing of this Form 10-K, we are not aware of any cyber-attacks that have occurred that have materially affected, or are reasonably likely to materially affect us, including our business strategy, results of operations or financial condition
Cybersecurity Risk Board of Directors Oversight [Text Block] | Governance and Oversight of Cybersecurity Risks GECM’s cybersecurity program is managed by the IT Committee. The members of the IT Committee collectively have over fifty years of experience helping to oversee the information technology infrastructure and processes at GECM and other asset managers in both operations and IT infrastructure leadership roles. Third-party consultants with specific education and over 25 years' experience in IT Infrastructure and Cybersecurity are utilized to provide additional technical insight and recommendations. The IT Committee is responsible for supervising and interfacing with providers to implement GECM’s monitoring and alert response processes, vulnerability management, changes made to its critical systems, including software and network changes, and various other technological and administrative safeguards. GECM has also developed an incident response framework to monitor the prevention, detection, mitigation and remediation of cybersecurity events. This framework is managed and implemented by the IT Committee, with support from their third-party consultants. The IT Committee alongside the General Counsel and Chief Compliance Officer of GECM are responsible for gathering information with respect to cybersecurity incidents, assessing their severity and determining potential responses, as well as communicating with business leaders and senior management, and the Board of Directors, as appropriate. Our Board monitors cybersecurity risk as part of Great Elm's overall risk management program. Our Board has delegated the primary responsibility for oversight and review of guidelines and policies with respect to risk assessment and risk management to the Audit Committee, which includes oversight of risks related to cybersecurity threats. The Audit Committee and the Board, as appropriate, are informed about risks related to cybersecurity threats through periodic reports from GECM's Chief Operating Officer. Such reporting includes updates on GECM’s cybersecurity program, the external threat environment, and GECM’s programs to address and mitigate the risks associated with the evolving cybersecurity threat environment. These reports also include updates on GECM’s preparedness, prevention, detection, responsiveness and recovery with respect to cyber incidents, where applicable.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] | Our Board has delegated the primary responsibility for oversight and review of guidelines and policies with respect to risk assessment and risk management to the Audit Committee, which includes oversight of risks related to cybersecurity threats.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] | The Audit Committee and the Board, as appropriate, are informed about risks related to cybersecurity threats through periodic reports from GECM's Chief Operating Officer.
Cybersecurity Risk Role of Management [Text Block] | Our Board monitors cybersecurity risk as part of Great Elm's overall risk management program.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] | true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] | Our Board monitors cybersecurity risk as part of Great Elm's overall risk management program. Our Board has delegated the primary responsibility for oversight and review of guidelines and policies with respect to risk assessment and risk management to the Audit Committee, which includes oversight of risks related to cybersecurity threats. The Audit Committee and the Board, as appropriate, are informed about risks related to cybersecurity threats through periodic reports from GECM's Chief Operating Officer. Such reporting includes updates on GECM’s cybersecurity program, the external threat environment, and GECM’s programs to address and mitigate the risks associated with the evolving cybersecurity threat environment. These reports also include updates on GECM’s preparedness, prevention, detection, responsiveness and recovery with respect to cyber incidents, where applicable.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block] | The members of the IT Committee collectively have over fifty years of experience helping to oversee the information technology infrastructure and processes at GECM and other asset managers in both operations and IT infrastructure leadership roles.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] | GECM has also developed an incident response framework to monitor the prevention, detection, mitigation and remediation of cybersecurity events.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] | true

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