v3.25.2
Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
 6 Months Ended
Mar. 08, 2024
Jun. 30, 2025
Mar. 27, 2025
Dec. 31, 2024
Debt Instrument [Line Items]        
Outstanding borrowings   $ 0   $ 120,000
Total principal   2,072,478    
Deferred financing costs, net   (17,290)   (18,977)
Revolving Credit Facility        
Debt Instrument [Line Items]        
Basis spread on variable rate (as a percent) 0.10%      
Mortgages, Senior Notes, and Unsecured Term Loan Facilities, not Including Unsecured Revolving Credit Facility        
Debt Instrument [Line Items]        
Total principal   2,072,478   2,294,274
Deferred financing costs, net   (9,007)   (10,123)
Unamortized debt discount   (5,793)   (6,183)
Total   2,057,678   2,277,968
10 Union Square | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 50,000   50,000
Stated rate (as a percent)   3.70%    
Effective Rate (as a percent)   3.97%    
1542 Third Avenue | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 30,000   30,000
Stated rate (as a percent)   4.29%    
Effective Rate (as a percent)   4.53%    
1010 Third Avenue and 77 West 55th Street | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 33,580   34,048
Stated rate (as a percent)   4.01%    
Effective Rate (as a percent)   4.21%    
Metro Center | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 71,600   71,600
Stated rate (as a percent)   3.59%    
Effective Rate (as a percent)   3.67%    
250 West 57th Street | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 180,000   180,000
Stated rate (as a percent)   2.83%    
Effective Rate (as a percent)   3.21%    
1333 Broadway | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 160,000   160,000
Stated rate (as a percent)   4.21%    
Effective Rate (as a percent)   4.29%    
345 East 94th Street - Series A | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 43,600   43,600
Variable rate, effective percentage (as a percent)   70.00%    
Basis spread on variable rate (as a percent)   0.95%    
Effective Rate (as a percent)   3.56%    
345 East 94th Street - Series B | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 6,106   6,490
Basis spread on variable rate (as a percent)   2.24%    
Effective Rate (as a percent)   3.56%    
561 10th Avenue - Series A | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 114,500   114,500
Variable rate, effective percentage (as a percent)   70.00%    
Basis spread on variable rate (as a percent)   1.07%    
Effective Rate (as a percent)   3.85%    
561 10th Avenue - Series B | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 13,092   14,036
Basis spread on variable rate (as a percent)   2.45%    
Effective Rate (as a percent)   3.85%    
Total mortgage debt | Fixed rate mortgage debt:        
Debt Instrument [Line Items]        
Fixed rate mortgage debt:   $ 702,478   704,274
Series A | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 0   100,000
Stated rate (as a percent)   0.00% 3.93%  
Effective Rate (as a percent)   0.00%    
Series B | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 125,000   125,000
Stated rate (as a percent)   4.09%    
Effective Rate (as a percent)   4.12%    
Series C | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 125,000   125,000
Stated rate (as a percent)   4.18%    
Effective Rate (as a percent)   4.21%    
Series D | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 115,000   115,000
Stated rate (as a percent)   4.08%    
Effective Rate (as a percent)   4.11%    
Series E | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 160,000   160,000
Stated rate (as a percent)   4.26%    
Effective Rate (as a percent)   4.27%    
Series F | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 175,000   175,000
Stated rate (as a percent)   4.44%    
Effective Rate (as a percent)   4.45%    
Series G | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 100,000   100,000
Stated rate (as a percent)   3.61%    
Effective Rate (as a percent)   4.89%    
Series H | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 75,000   75,000
Stated rate (as a percent)   3.73%    
Effective Rate (as a percent)   5.00%    
Series I | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 155,000   155,000
Stated rate (as a percent)   7.20%    
Effective Rate (as a percent)   7.39%    
Series J | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 45,000   45,000
Stated rate (as a percent)   7.32%    
Effective Rate (as a percent)   7.46%    
Series K | Senior unsecured notes        
Debt Instrument [Line Items]        
Total   $ 25,000   25,000
Stated rate (as a percent)   7.41%    
Effective Rate (as a percent)   7.52%    
Unsecured Term Loan Facility | Revolving Credit Facility        
Debt Instrument [Line Items]        
Outstanding borrowings   $ 175,000   175,000
Basis spread on variable rate (as a percent)   1.50%    
Effective Rate (as a percent)   4.61%    
Unsecured Term Loan Facility | Revolving Credit Facility        
Debt Instrument [Line Items]        
Outstanding borrowings   $ 95,000   95,000
Basis spread on variable rate (as a percent) 1.50% 1.50%    
Effective Rate (as a percent)   5.16%    
Unsecured revolving credit facility | Revolving Credit Facility        
Debt Instrument [Line Items]        
Outstanding borrowings   $ 0   $ 120,000
Basis spread on variable rate (as a percent)   1.30%    
Effective Rate (as a percent)   4.04%