Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	We rely on the information technology and systems maintained by our managers, including RMR, and rely on our managers to identify and manage material risks from cybersecurity threats. RMR and our senior living community managers take various actions, and incur significant costs, to maintain and protect the operation and security of information technology and systems, including the data maintained in those systems.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	We rely on the information technology and systems maintained by our managers, including RMR, and rely on our managers to identify and manage material risks from cybersecurity threats. RMR and our senior living community managers take various actions, and incur significant costs, to maintain and protect the operation and security of information technology and systems, including the data maintained in those systems.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Audit Committee oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from RMR’s chief information officer regarding the development and advancement of its cybersecurity strategy, as well as the related risks.
Cybersecurity Risk Role of Management [Text Block]	We rely on the information technology and systems maintained by our managers, including RMR, and rely on our managers to identify and manage material risks from cybersecurity threats. RMR and our senior living community managers take various actions, and incur significant costs, to maintain and protect the operation and security of information technology and systems, including the data maintained in those systems. Our Audit Committee oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from RMR’s chief information officer regarding the development and advancement of its cybersecurity strategy, as well as the related risks. In the event of a cybersecurity incident, RMR has a detailed incident response plan in place for contacting authorities and informing key stakeholders, including our management.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Our Audit Committee oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from RMR’s chief information officer regarding the development and advancement of its cybersecurity strategy, as well as the related risks.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	In the event of a cybersecurity incident, RMR has a detailed incident response plan in place for contacting authorities and informing key stakeholders, including our management.