Business and Property Management Agreements with RMR - Schedule of Business Management and Operating Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Business Management Agreement, Business Management Fees And Incentive Fees
Related Party Transaction [Line Items]
Related party transaction, amount	$ 8,039	$ 8,365	$ 24,256	$ 22,132
Business Management Fees
Related Party Transaction [Line Items]
Related party transaction, amount	6,154	5,927	17,970	17,416
Business Management Agreement, Incentive Fees
Related Party Transaction [Line Items]
Related party transaction, amount	1,885	2,438	6,286	4,716
Property Management and Construction Supervision Fees
Related Party Transaction [Line Items]
Related party transaction, amount	3,535	3,483	10,495	10,105
Property Management Fees
Related Party Transaction [Line Items]
Related party transaction, amount	3,327	3,250	10,047	9,755
Construction Supervision Fees
Related Party Transaction [Line Items]
Related party transaction, amount	208	233	448	350
Reimbursed Property Level Operating Expenses
Related Party Transaction [Line Items]
Related party transaction, amount	1,721	1,557	4,841	4,964
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	132	152
Reimbursed Property Level Operating Expenses \| Location, Statement of Income, Balance [Axis]: us-gaap:OtherCostAndExpenseOperating
Related Party Transaction [Line Items]
Related party transaction, amount	$ 1,677	$ 1,506	$ 4,709	$ 4,812