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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 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Pursuant to business management agreement:        
Business management fees $ 3,967 $ 3,977 $ 11,517 $ 12,321
Incentive management fees 5,676 6,934 12,231 6,934
Total 9,643 10,911 23,748 19,255
Pursuant to property management agreement        
Property management fees 1,199 1,358 3,643 4,342
Construction supervision fees 341 429 775 1,069
Total 1,540 1,787 4,418 5,411
Expense Reimbursement [Abstract]        
Property level expenses 3,085 3,925 10,144 11,202
Other reimbursed expenses 50 82 150 246
Total 3,135 4,007 10,294 11,448
Recognized amortization of the liability 743 743 2,229 2,229
Amortization of liability related to property management and construction supervision fees $ 199 $ 199 $ 597 $ 597