Fair Value Measurements (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Fair Value of Financial Instruments
Marketable securities available-for-sale	$ 10,673	$ 9,591
Interest rate cap and swap agreements (included in Other assets)	51,388	33,456
Interest rate cap and swap agreements (included in Other liabilities)	7,754	17,108
Investment fair value adjustment		17,000
Debt and preferred equity investments	$ 352,347	346,745
10 East 53rd Street
Fair Value of Financial Instruments
Ownership Interest Sold	45.00%
Investment fair value adjustment	$ 55,700
Variable Rate Debt
Fair Value of Financial Instruments
Estimated fair value of debt and preferred equity investments, low end of range	110,500
Estimated fair value of debt and preferred equity investments, high end of range	109,400
Carrying Value
Fair Value of Financial Instruments
Debt and preferred equity investments	352,347	346,745
Fixed rate debt	3,040,885	3,237,386
Variable rate debt	760,493	270,000
Total	3,801,378	3,507,386
Fair Value
Fair Value of Financial Instruments
Total	3,732,967	3,453,125
Estimated fair value of debt and preferred equity investments, low end of range	300,000	300,000
Level 1
Fair Value of Financial Instruments
Marketable securities available-for-sale	0	0
Interest rate cap and swap agreements (included in Other assets)	0	0
Interest rate cap and swap agreements (included in Other liabilities)	0	0
Level 2
Fair Value of Financial Instruments
Marketable securities available-for-sale	10,673	9,591
Interest rate cap and swap agreements (included in Other assets)	51,388	33,456
Interest rate cap and swap agreements (included in Other liabilities)	7,754	17,108
Level 3
Fair Value of Financial Instruments
Marketable securities available-for-sale	0	0
Interest rate cap and swap agreements (included in Other assets)	0	0
Interest rate cap and swap agreements (included in Other liabilities)	0	0
Level 3 \| Fair Value
Fair Value of Financial Instruments
Fixed rate debt	2,973,363	3,184,338
Variable rate debt	$ 759,604	$ 268,787

Represents the high end of the range of estimated fair value for investments in mortgage loans on real estate.

No definition available.

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- Definition

Represents the low end of the range of estimated fair value for investments in mortgage loans on real estate.

+ References

No definition available.

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- Definition

Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

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- Definition

Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

No definition available.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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No definition available.

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- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

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