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Fair Value Measurements - Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair value of mortgage and other indebtedness $ 1,959,587 $ 2,059,094
Available-for-sale securities, amortized cost 249,638 149,999
Available-For-Sale Securities Held, Fair Value [1] 249,912 149,996
U.S Treasury Securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Available-for-sale securities, amortized cost 249,638 149,999
Available-For-Sale Securities Held, unrealized gains/(losses) 274 (3)
Available-For-Sale Securities Held, Fair Value $ 249,912 $ 149,996
U.S. Treasury securities, maturity date Jul. 31, 2023  
[1] As of September 30, 2022, includes $196,638 of assets related to consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities and $188,699 of liabilities of consolidated variable interest entities for which creditors do not have recourse to the general credit of the Company. See Note 8.