Business and Property Management Agreements with RMR	3 Months Ended
Business and Property Management Agreements with RMR	Mar. 31, 2024
Related Party Transactions [Abstract]
Business and Property Management Agreements with RMR	Business and Property Management Agreements with RMR We have no employees. The personnel and various services we require to operate our business are provided to us by RMR. We have two agreements with RMR to provide management services to us: (1) a business management agreement, which relates to our business generally; and (2) a property management agreement, which relates to the property level operations of many of our properties, including our medical office and life science properties, and major renovation or repositioning activities at our senior living communities that we may request RMR to manage from time to time. See Note 11 for further information regarding our relationship, agreements and transactions with RMR. We recognized net business management fees of $4,878 and $3,270 for the three months ended March 31, 2024 and 2023, respectively. The net business management fees we recognized for the three months ended March 31, 2024 include $849 of estimated incentive fees based on our common share total return, as defined in our business management agreement. Although we recognized estimated incentive fees in accordance with GAAP, the actual amount of annual incentive fees for 2024, if any, will be based on our common share total return as defined in our business management agreement, for the three-year period ending December 31, 2024, and will be payable in January 2025. We did not incur any incentive fee payable for the year ended December 31, 2023. We recognize business management and incentive fees in general and administrative expenses in our condensed consolidated statements of comprehensive income (loss). We recognized aggregate net property management and construction supervision fees of $1,904 and $1,992 for the three months ended March 31, 2024 and 2023, respectively. For the three months ended March 31, 2024 and 2023, $1,538 and $1,463, respectively, of the total property management fees were expensed to property operating expenses in our condensed consolidated statements of comprehensive income (loss) and $366 and $529, respectively, were capitalized as building improvements in our condensed consolidated balance sheets. The amounts capitalized are being depreciated over the estimated useful lives of the related capital assets. We are generally responsible for all our operating expenses, including certain expenses incurred or arranged by RMR on our behalf. We are generally not responsible for payment of RMR's employment, office or administrative expenses incurred to provide management services to us, except for the employment and related expenses of RMR's employees assigned to work exclusively or partly at our properties, our share of the wages, benefits and other related costs of RMR's centralized accounting personnel, our share of RMR's costs for providing our internal audit function, or as otherwise agreed. Our property level operating expenses are generally incorporated into the rents charged to our tenants, including certain payroll and related costs incurred by RMR. We reimbursed RMR $3,728 and $3,533 for these expenses and costs for the three months ended March 31, 2024 and 2023, respectively. These amounts are included in property operating expenses or general and administrative expenses, as applicable, in our condensed consolidated statements of comprehensive income (loss) for these periods. Management Agreements between our Joint Ventures and RMR. We have two separate joint venture arrangements with third party institutional investors, the Seaport JV and the LSMD JV. RMR provides management services to both of these joint ventures. Our joint ventures are not our consolidated subsidiaries and, as a result, we are not obligated to pay management fees to RMR under our management agreements with RMR for the services it provides regarding the joint ventures.