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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
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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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