Business and Property Management Agreements with RMR - Business Management Fees, Property Management Fees and Construction Supervision Fees (Details) - RMR LLC - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Business management agreement
Related Party Transaction [Line Items]
Transaction amount	$ 13,145	$ 14,751
Recognized amortization of the liability	603	603
Property management agreement
Related Party Transaction [Line Items]
Transaction amount	16,456	23,280
Reimbursement amounts	484	484
Property management fees
Related Party Transaction [Line Items]
Transaction amount	13,584	14,890
Construction supervision fees
Related Party Transaction [Line Items]
Transaction amount	2,872	8,390
Expense Reimbursement
Related Party Transaction [Line Items]
Transaction amount	$ 25,797	$ 25,872