Business and Property Management Agreements with RMR - Schedule of Business Management and Operating Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Business Management Agreement, Business Management Fees And Incentive Fees
Related Party Transaction [Line Items]
Related party transaction, amount	$ 8,858	$ 7,065	$ 16,217	$ 13,767
Business Management Fees
Related Party Transaction [Line Items]
Related party transaction, amount	6,024	5,754	11,816	11,489
Business Management Agreement, Incentive Fees
Related Party Transaction [Line Items]
Related party transaction, amount	2,834	1,311	4,401	2,278
Property Management and Construction Supervision Fees
Related Party Transaction [Line Items]
Related party transaction, amount	3,530	3,325	6,960	6,622
Property Management Fees
Related Party Transaction [Line Items]
Related party transaction, amount	3,371	3,238	6,720	6,505
Construction Supervision Fees
Related Party Transaction [Line Items]
Related party transaction, amount	159	87	240	117
Reimbursed Property Level Operating Expenses
Related Party Transaction [Line Items]
Related party transaction, amount	1,542	1,787	3,120	3,407
Reimbursed Property Level Operating Expenses \| Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Related Party Transaction [Line Items]
Related party transaction, amount	44	51	88	101
Reimbursed Property Level Operating Expenses \| Location, Statement of Income, Balance [Axis]: us-gaap:OtherCostAndExpenseOperating
Related Party Transaction [Line Items]
Related party transaction, amount	$ 1,498	$ 1,736	$ 3,032	$ 3,306