Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value of Financial Instruments
Marketable securities available-for-sale	$ 22,353	$ 24,146
Interest rate cap and swap agreements (included in Other assets)	10,052	1,896
Debt and preferred equity investments	1,107,870	1,088,723
Carrying Value
Fair Value of Financial Instruments
Debt and preferred equity investments	1,107,870	1,088,723
Fixed rate debt	3,321,239	3,274,324
Variable rate debt	813,478	801,051
Total	4,134,717	4,075,375
Fair Value
Fair Value of Financial Instruments
Marketable securities available-for-sale	22,353	24,146
Total	4,135,040	4,137,135
Estimated fair value of debt and preferred equity investments, low end of range	1,000,000	1,000,000
Estimated fair value of debt and preferred equity investments, high end of range	1,100,000	1,100,000
Level 1
Fair Value of Financial Instruments
Interest rate cap and swap agreements (included in Other assets)	0	0
Level 2
Fair Value of Financial Instruments
Interest rate cap and swap agreements (included in Other assets)	10,052	1,896
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
Level 3 \| Fair Value
Fair Value of Financial Instruments
Fixed rate debt	3,322,000	3,336,463
Variable rate debt	813,040	800,672
Marketable securities available-for-sale \| Level 1
Fair Value of Financial Instruments
Marketable securities available-for-sale	0	0
Commercial mortgage-backed securities
Fair Value of Financial Instruments
Marketable securities available-for-sale	22,353	24,146
Commercial mortgage-backed securities \| Level 2
Fair Value of Financial Instruments
Marketable securities available-for-sale	22,353	24,146
Other liabilities
Fair Value of Financial Instruments
Interest rate cap and swap agreements (included in Other liabilities)	5,795	29,912
Other liabilities \| Level 1
Fair Value of Financial Instruments
Interest rate cap and swap agreements (included in Other liabilities)	0	0
Other liabilities \| Level 2
Fair Value of Financial Instruments
Interest rate cap and swap agreements (included in Other liabilities)	5,795	29,912
Other liabilities \| Level 3
Fair Value of Financial Instruments
Interest rate cap and swap agreements (included in Other liabilities)	$ 0	$ 0

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 investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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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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

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

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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

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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.

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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.

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