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Fair Value Measurements - Schedule of Carrying Values and Estimated Fair Values of Financial Instruments (Details) - Mortgages - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	$ 457,662	$ 493,819
Fair Value | BOA II Loan | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	220,730	226,361
Fair Value | AIG Loan II | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	115,340	111,872
Fair Value | AIG Loan | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	92,444	89,526
Fair Value | Samsonite Loan | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	0	17,998
Fair Value | HealthSpring Mortgage Loan | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	0	19,107
Fair Value | Pepsi Bottling Ventures | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	17,439	17,014
Fair Value | Highway 94 Mortgage Loan | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	11,709	11,941
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	491,545	539,803
Carrying Value | BOA II Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	250,000	250,000
Carrying Value | AIG Loan II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	119,953	122,328
Carrying Value | AIG Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	92,444	99,794
Carrying Value | Samsonite Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	0	17,998
Carrying Value | HealthSpring Mortgage Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	0	19,107
Carrying Value | Pepsi Bottling Ventures
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	17,439	17,836
Carrying Value | Highway 94 Mortgage Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans	$ 11,709	$ 12,740

X

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-10

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- Definition

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+ References

No definition available.

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