Annual report pursuant to Section 13 and 15(d)

Mortgages, Loans Payable And Other Obligations (Summary Of Mortgages, Loans Payable And Other Obligations) (Details)

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Mortgages, Loans Payable And Other Obligations (Summary Of Mortgages, Loans Payable And Other Obligations) (Details)
$ in Thousands
1 Months Ended 12 Months Ended
May 31, 2021
USD ($)
Apr. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
item
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]          
Principal balance outstanding     $ 2,400,000 $ 2,800,000  
Repayment of revolving credit facility and money market loans     73,000 516,000 $ 617,000
RXR - Short Hills [Member]          
Debt Instrument [Line Items]          
Closing costs to defease loan   $ 22,600      
Riverhouse 9 At Port Imperia [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount     $ 92,000    
Loan extension period     1 year    
Extension fee     15.00%    
Debt Instrument, Percent Guaranteed     10.00%    
Liberty Towers [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount     $ 265,000    
Debt Instrument, Increase (Decrease), Net     33,000    
Haus 25 [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity     $ 300,000    
Number of extension options | item     1    
Loan extension period     1 year    
Extension fee     25.00%    
Haus 25 [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Variable Interest Rate     2.00%    
Portside 5/6 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Percent Guaranteed     10.00%    
Upton [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount     $ 75,000    
Maximum borrowing capacity     $ 64,000    
Loan extension period     18 years    
Extension fee     30.00%    
Debt Instrument, Percent Guaranteed     15.00%    
Soho Lofts [Member]          
Debt Instrument [Line Items]          
Variable Interest Rate     2.75%    
Port Imperial 4/5 Garage Development [Member]          
Debt Instrument [Line Items]          
Deferred interest     $ 800    
Emery At Overlook Ridge [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount       72,000  
Proceeds from Issuance of Debt       10,400  
Secured Debt [Member]          
Debt Instrument [Line Items]          
Principal balance outstanding     2,252,290 2,218,862  
Unamortized deferred financing costs     (11,220) (14,718)  
Total mortgages, loans payable and other obligations, net     $ 2,241,070 2,204,144  
Secured Debt [Member] | RXR - Short Hills [Member]          
Debt Instrument [Line Items]          
Property Name     RXR - Short Hills (b)    
Lender     Wells Fargo CMBS    
Effective rate     4.15%    
Principal balance outstanding       124,500  
Secured Debt [Member] | Port Imperial South 4/5 Retail [Member]          
Debt Instrument [Line Items]          
Property Name     Port Imperial South 4/5 Retail    
Lender     American General Life & A/G PC    
Principal balance outstanding       3,866  
Secured Debt [Member] | Riverhouse 9 At Port Imperia [Member]          
Debt Instrument [Line Items]          
Property Name     Riverhouse 9 at Port Imperial (c)    
Lender     Bank of New York Mellon    
Effective rate     2.13%    
Principal balance outstanding     $ 87,175 46,357  
Loan maturity date     Dec. 19, 2022    
Secured Debt [Member] | Port Imperial 4/5 Hotel [Member]          
Debt Instrument [Line Items]          
Property Name     Port Imperial 4/5 Hotel (d)    
Lender     Fifth Third Bank    
Effective rate     3.57%    
Principal balance outstanding $ 14,500   $ 89,000 94,000  
Loan maturity date     Apr. 01, 2023    
Repayment of debt $ 5,000        
Secured Debt [Member] | Portside At Pier One [Member]          
Debt Instrument [Line Items]          
Property Name     Portside at Pier One    
Lender     CBRE Capital Markets/FreddieMac    
Principal balance outstanding     $ 58,998 58,998  
Loan maturity date     Aug. 01, 2023    
Secured Debt [Member] | Signature Place [Member]          
Debt Instrument [Line Items]          
Property Name     Signature Place    
Lender     Nationwide Life Insurance Company    
Effective rate     3.74%    
Principal balance outstanding     $ 43,000 43,000  
Loan maturity date     Aug. 01, 2024    
Secured Debt [Member] | Liberty Towers [Member]          
Debt Instrument [Line Items]          
Property Name     Liberty Towers (e)    
Lender     American General Life Insurance Company    
Effective rate     3.37%    
Principal balance outstanding     $ 265,000 265,000  
Loan maturity date     Oct. 01, 2024    
Secured Debt [Member] | Haus 25 [Member]          
Debt Instrument [Line Items]          
Property Name     Haus 25 (f)    
Lender     QuadReal Finance    
Principal balance outstanding     $ 255,453 161,544  
Loan maturity date     Dec. 01, 2024    
Secured Debt [Member] | Portside 5/6 [Member]          
Debt Instrument [Line Items]          
Property Name     Portside 5/6 (g)    
Lender     New York Life Insurance Company    
Effective rate     4.56%    
Principal balance outstanding     $ 97,000 97,000  
Loan maturity date     Mar. 10, 2026    
Secured Debt [Member] | BLVD 425 [Member]          
Debt Instrument [Line Items]          
Property Name     BLVD 425    
Lender     New York Life Insurance Company    
Effective rate     4.17%    
Principal balance outstanding     $ 131,000 131,000  
Loan maturity date     Aug. 10, 2026    
Secured Debt [Member] | BLVD 401 [Member]          
Debt Instrument [Line Items]          
Property Name     BLVD 401    
Lender     New York Life Insurance Company    
Effective rate     4.29%    
Principal balance outstanding     $ 117,000 117,000  
Loan maturity date     Aug. 10, 2026    
Secured Debt [Member] | 101 Hudson Street [Member]          
Debt Instrument [Line Items]          
Property Name     101 Hudson    
Lender     Wells Fargo CMBS    
Effective rate     3.20%    
Principal balance outstanding     $ 250,000 250,000  
Loan maturity date     Oct. 11, 2026    
Secured Debt [Member] | Upton [Member]          
Debt Instrument [Line Items]          
Property Name     The Upton (h)    
Lender     Bank of New York Mellon    
Principal balance outstanding     $ 75,000 42,459  
Loan maturity date     Oct. 27, 2026    
Secured Debt [Member] | 145 Front at City Square [Member]          
Debt Instrument [Line Items]          
Property Name     145 Front at City Square    
Lender     MUFG Union Bank    
Effective rate     1.84%    
Principal balance outstanding     $ 63,000 63,000  
Loan maturity date     Dec. 10, 2026    
Secured Debt [Member] | Quarry Place At Tuckahoe [Member]          
Debt Instrument [Line Items]          
Property Name     Quarry Place at Tuckahoe    
Lender     Natixis Real Estate Capital LLC    
Effective rate     4.48%    
Principal balance outstanding     $ 41,000 41,000  
Loan maturity date     Aug. 05, 2027    
Secured Debt [Member] | Monaco (BLVD 495 N/S) [Member]          
Debt Instrument [Line Items]          
Property Name     BLVD 475 N/S (i)    
Lender     The Northwestern Mutual Life Insurance Co.    
Effective rate     2.91%    
Principal balance outstanding     $ 165,000 165,000  
Loan maturity date     Nov. 10, 2027    
Secured Debt [Member] | Riverhouse 11 at Port Imperial [Member]          
Debt Instrument [Line Items]          
Property Name     Riverhouse 11 at Port Imperial    
Lender     The Northwestern Mutual Life Insurance Co.    
Effective rate     4.52%    
Principal balance outstanding     $ 100,000 100,000  
Loan maturity date     Jan. 10, 2029    
Secured Debt [Member] | Soho Lofts [Member]          
Debt Instrument [Line Items]          
Property Name     Soho Lofts (j)    
Lender     New York Community Bank    
Effective rate     3.77%    
Principal balance outstanding     $ 160,000 160,000  
Loan maturity date     Jul. 01, 2029    
Secured Debt [Member] | 111 River St. [Member]          
Debt Instrument [Line Items]          
Property Name     111 River St. (k)    
Lender     Athene Annuity and Life Company    
Effective rate     3.90%    
Principal balance outstanding     $ 150,000 150,000  
Loan maturity date     Sep. 01, 2029    
Secured Debt [Member] | Port Imperial South 9 [Member]          
Debt Instrument [Line Items]          
Effective rate     4.56%    
Secured Debt [Member] | Short Hills Residential [Member]          
Debt Instrument [Line Items]          
Effective rate     3.40%    
Secured Debt [Member] | The Charlotte [Member]          
Debt Instrument [Line Items]          
Effective rate     2.70%    
Secured Debt [Member] | Worcester [Member]          
Debt Instrument [Line Items]          
Effective rate     1.58%    
Secured Debt [Member] | Port Imperial South 4/5 Garage [Member]          
Debt Instrument [Line Items]          
Property Name     Port Imperial South 4/5 Garage (l)    
Lender     American General Life & A/G PC    
Effective rate     4.85%    
Principal balance outstanding     $ 32,664 33,138  
Loan maturity date     Dec. 01, 2029    
Secured Debt [Member] | Emery At Overlook Ridge [Member]          
Debt Instrument [Line Items]          
Property Name     Emery at Overlook Ridge (m)    
Lender     New York Community Bank    
Effective rate     3.21%    
Principal balance outstanding     $ 72,000 $ 72,000  
Loan maturity date     Jan. 01, 2031