v3.26.3
Investments in Partially Owned Entities (Schedule of Investments) (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Schedule Of Equity Method Investments    
Carrying amount of investments in partially owned entities $ 2,244,170 $ 1,941,278
Carrying amount of investments in partially owned entities $ (73,880) (90,924)
Fifth Avenue and Times Square JV    
Schedule Of Equity Method Investments    
Interest 51.50%  
Carrying amount of investments in partially owned entities $ 1,531,737 1,538,141
Partially owned office buildings/land    
Schedule Of Equity Method Investments    
Carrying amount of investments in partially owned entities $ 417,671 148,958
Alexander's    
Schedule Of Equity Method Investments    
Interest 32.40%  
Carrying amount of investments in partially owned entities $ 84,267 47,276
Other investments    
Schedule Of Equity Method Investments    
Carrying amount of investments in partially owned entities $ 210,495 206,903
7 West 34th Street    
Schedule Of Equity Method Investments    
Interest 53.00%  
Carrying amount of investments in partially owned entities $ (44,659) (65,726)
85 Tenth Avenue    
Schedule Of Equity Method Investments    
Interest 49.90%  
Carrying amount of investments in partially owned entities $ (29,221) $ (25,198)