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Business and Property Management Agreements with RMR-Schedule of Business Management Fees, Property Management Fees and Construction Supervision Fees Recognized (Details) - RMR LLC - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Pursuant to business management agreement:    
Business management fees $ 3,809 $ 4,029
Incentive management fees 2,407 849
Total 6,216 4,878
Pursuant to property management agreement    
Property management fees 1,264 1,538
Construction supervision fees 226 366
Total 1,490 1,904
Expense Reimbursement:    
Property level expenses 3,791 3,728
Recognized amortization of the liability 744 744
Amortization of liability related to property management and construction supervision fees 199 199
General and Administrative Expense    
Expense Reimbursement:    
Property level expenses 50 82
Operating Expense    
Expense Reimbursement:    
Property level expenses $ 3,741 $ 3,646