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Financial Instruments and Fair Value Measurements - Schedule of Other Financial Instruments Carrying Values and Fair values (Parenthetical) (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized premium	$ 1,151,000	$ 212,000
Mortgages
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized premium	$ 1,151,000	212,000
Level 3 | Mortgages | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated market rates of financial instruments	7.08%
Level 3 | Mortgages | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated market rates of financial instruments	5.13%
Level 3 | Mortgages | City Point Loan | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated market rates of financial instruments	12.97%
Level 3 | Mortgages | City Point Loan | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated market rates of financial instruments	3.30%
Level 3 | Other Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized debt issuance costs	$ 5,300	5,500
Unamortized premium	1,200	200
Level 3 | Unsecured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized debt issuance costs	$ 6,900	$ 5,400

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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