Significant Accounting Policies - Schedule of Properties Contributed of Annualized Cash Rent (Details) - Annualized Rent	3 Months Ended
Mar. 31, 2024 tenant
Customer Concentration
Concentration of Credit Risk
Number of tenants (tenants)	1
Maximum percentage of annualized rent for any one tenant not individually disclosed (percent) (more than)	5.00%
Investment Property Concentration Risk \| One Vanderbilt Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	16.70%
Investment Property Concentration Risk \| 11 Madison Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	8.80%
Investment Property Concentration Risk \| 420 Lexington Ave
Concentration of Credit Risk
Percentage of concentration (percent)	7.20%
Investment Property Concentration Risk \| 1515 Broadway
Concentration of Credit Risk
Percentage of concentration (percent)	6.70%
Investment Property Concentration Risk \| 1185 Avenue of the Americas
Concentration of Credit Risk
Percentage of concentration (percent)	6.00%
Investment Property Concentration Risk \| 245 Park Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	5.60%
Investment Property Concentration Risk \| 280 Park Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	5.00%
Tenant 1 \| Customer Concentration
Concentration of Credit Risk
Percentage of concentration (percent)	5.50%

Represents the maximum percentage of concentration risk that is not individually disclosed.

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- Definition

Represents the number of tenants to whom the facility is leased.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481027/954-310-50-2

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

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