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Business and Property Management Agreements with RMR - Schedule of Business Management Fees, Property Management Fees and Construction Supervision Fees (Details) - RMR LLC - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Net business management fees
Real Estate Properties [Line Items]
Transaction amount	$ 28,122	$ 29,653	$ 33,352
Recognized amortization of liability	3,585	3,585	3,585
Property management agreement
Real Estate Properties [Line Items]
Transaction amount	10,924	11,970	8,368
Property management fees
Real Estate Properties [Line Items]
Transaction amount	8,517	6,012	3,702
Construction supervision fees
Real Estate Properties [Line Items]
Transaction amount	2,407	5,958	4,666
Expense reimbursement
Real Estate Properties [Line Items]
Transaction amount	$ 4,672	$ 4,445	$ 4,648

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

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