Fair Value Measurements - Debt Securities, Available-for-sale Measured at Fair Value (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of mortgage and other indebtedness		$ 1,754,060	$ 1,806,486
Available-for-sale securities, amortized cost		235,072	261,869
Available-For-Sale Securities Held, Fair Value	[1]	234,998	262,142
U.S Treasury Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities, amortized cost		235,072	261,869
Available-For-Sale Securities Held, unrealized (loss) gain		(74)	273
Available-For-Sale Securities Held, Fair Value		$ 234,998	$ 262,142
U.S. Treasury securities, maturity date		Sep. 30, 2024

[1] As of March 31, 2024, includes $179,986 of assets related to consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities and $205,856 of liabilities of consolidated variable interest entities for which creditors do not have recourse to the general credit of the Company. See Note 7.