v3.25.2
Mortgages Payable - Additional Information (Detail) - 731 Lexington Avenue - Mortgages - USD ($)
$ in Millions
6 Months Ended
Aug. 01, 2025
Jun. 30, 2025
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Mortgage loans   $ 300
Interest rate   5.83%
Subsequent Event    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Basis spread over SOFR 1.51%  
Extension term 60 days  
Retail Space    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]    
Basis spread over SOFR   1.51%
Interest rate   5.83%