Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (Summary Of Unconsolidated Joint Ventures) (Details)

v3.20.2
Investments In Unconsolidated Joint Ventures (Summary Of Unconsolidated Joint Ventures) (Details)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Feb. 28, 2019
USD ($)
Sep. 30, 2020
USD ($)
ft²
item
Sep. 30, 2020
USD ($)
ft²
item
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Jun. 26, 2020
USD ($)
Jun. 10, 2020
USD ($)
Mar. 12, 2020
Aug. 01, 2019
Jan. 31, 2019
Schedule of Equity Method Investments [Line Items]                    
Carrying Value   $ 194,779 $ 194,779   $ 209,091          
Purchase price of property     123,785 $ 79,842            
Property impairments on continuing operations   $ 36,582 $ 36,582              
Minimum [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Company's Effective Ownership %   20.00% 20.00%              
Maximum [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Company's Effective Ownership %   85.00% 85.00%              
Crystal House [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Maximum borrowing capacity           $ 161,500        
Percentage of interest in developable land   50.00% 50.00%              
Number of units available for development | item   738 738              
PI North - Riverwalk C [Member] | Construction Loan [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Maximum borrowing capacity   $ 112,000 $ 112,000              
Percent of principal loan outstanding     10.00%              
Riverpark At Harrison [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Maximum borrowing capacity             $ 30,192      
Urby At Harborside [Member] | Construction/Permanent Loan [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Company's Effective Ownership %   85.00% 85.00%              
PI North - Land [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   836 836              
Residual ownership interest   20.00% 20.00%              
Guaranteed amount   $ 22,000 $ 22,000              
Red Bank [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Gain on sale $ 900                  
12 Vreeland Road [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Property impairments on continuing operations         3,700          
The Shops At 40 Park Property [Member] | Metropolitan And Lofts At 40 Park [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Rentable Square Feet (sf) | ft²   50,973 50,973              
Balance   $ 6,067 $ 6,067              
Property Debt, Interest Rate, Spread Over LIBOR     0.0225%              
Residual ownership interest   25.00% 25.00%              
Mortgage loan, maturity month and year     October 2021              
Lofts At 40 Park Property [Member] | Metropolitan And Lofts At 40 Park [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   59 59              
Property Debt, Interest Rate, Spread Over LIBOR     0.015%              
Indirect ownership interest   50.00% 50.00%              
Number of stories | item   5 5              
Maximum borrowing capacity   $ 18,200 $ 18,200              
Mortgage loan, maturity month and year     January 2023              
Metropolitan Property [Member] | Metropolitan And Lofts At 40 Park [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Balance   $ 36,500 $ 36,500              
Property Debt, Interest Rate, Spread Over LIBOR     0.0285%              
Mortgage loan, maturity month and year     October 2023              
Unconsolidated Joint Venture Multi-Family Properties [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   2,611 2,611              
Unconsolidated Joint Venture Multi-Family Properties [Member] | Metropolitan And Lofts At 40 Park [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   189 189              
Company's Effective Ownership %   25.00% 25.00%              
Carrying Value   $ 3,746 $ 3,746   7,257          
Balance   $ 60,767 $ 60,767              
Unconsolidated Joint Venture Multi-Family Properties [Member] | RiverTrace At Port Imperial [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   316 316              
Company's Effective Ownership %   22.50% 22.50%              
Carrying Value   $ 6,808 $ 6,808   7,463          
Balance   $ 82,000 $ 82,000              
Property Debt, Maturity Date     Nov. 10, 2026              
Property Debt, Interest Rate   3.21% 3.21%              
Unconsolidated Joint Venture Multi-Family Properties [Member] | Crystal House [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   825 825              
Company's Effective Ownership %   25.00% 25.00%              
Carrying Value   $ 26,844 $ 26,844   28,823          
Balance   $ 161,500 $ 161,500              
Property Debt, Maturity Date     Jul. 01, 2027              
Property Debt, Interest Rate   2.72% 2.72%              
Unconsolidated Joint Venture Multi-Family Properties [Member] | PI North - Riverwalk C [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   360 360              
Company's Effective Ownership %   40.00% 40.00%              
Carrying Value   $ 35,946 $ 35,946   35,527          
Balance   $ 63,628 $ 63,628              
Property Debt, Maturity Date     Dec. 06, 2021              
Property Debt, Interest Rate   2.75% 2.75%              
Unconsolidated Joint Venture Multi-Family Properties [Member] | Marbella II [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Company's Effective Ownership %                 24.27% 50.00%
Unconsolidated Joint Venture Multi-Family Properties [Member] | Riverpark At Harrison [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   141 141              
Company's Effective Ownership %   45.00% 45.00%              
Carrying Value   $ 787 $ 787   1,015          
Balance   $ 30,192 $ 30,192              
Property Debt, Maturity Date     Jul. 01, 2035              
Property Debt, Interest Rate   3.19% 3.19%              
Unconsolidated Joint Venture Multi-Family Properties [Member] | Station House [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   378 378              
Company's Effective Ownership %   50.00% 50.00%              
Carrying Value   $ 33,860 $ 33,860   35,676          
Balance   $ 95,576 $ 95,576              
Property Debt, Maturity Date     Jul. 01, 2033              
Property Debt, Interest Rate   4.82% 4.82%              
Unconsolidated Joint Venture Multi-Family Properties [Member] | Urby At Harborside [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   762 762              
Company's Effective Ownership %   85.00% 85.00%              
Carrying Value   $ 74,847 $ 74,847   79,790          
Balance   $ 192,000 $ 192,000              
Property Debt, Maturity Date     Aug. 01, 2029              
Property Debt, Interest Rate   5.197% 5.197%              
Unconsolidated Joint Venture Multi-Family Properties [Member] | PI North - Land [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   836 836              
Company's Effective Ownership %   20.00% 20.00%              
Carrying Value   $ 1,678 $ 1,678   1,678          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Liberty Landing [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   850 850              
Company's Effective Ownership %   50.00% 50.00%              
Carrying Value   $ 337 $ 337   337          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Hillsborough 206 [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Rentable Square Feet (sf) | ft²   160,000 160,000              
Company's Effective Ownership %   50.00% 50.00%              
Carrying Value   $ 1,962 $ 1,962   1,962          
Unconsolidated Joint Venture Office Buildings [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Rentable Square Feet (sf) | ft²   200,000 200,000              
Unconsolidated Joint Venture Office Buildings [Member] | Red Bank [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Percentage of interest sold 50.00%                  
Unconsolidated Joint Venture Office Buildings [Member] | 12 Vreeland Road [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Rentable Square Feet (sf) | ft²   139,750 139,750              
Company's Effective Ownership %   50.00% 50.00%              
Carrying Value   $ 4,196 $ 4,196   3,846          
Balance   $ 5,008 $ 5,008              
Property Debt, Maturity Date     Jul. 01, 2023              
Property Debt, Interest Rate   2.87% 2.87%              
Unconsolidated Joint Venture Office Buildings [Member] | Offices At Crystal Lake [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Rentable Square Feet (sf) | ft²   106,345 106,345              
Company's Effective Ownership %   31.25% 31.25%              
Carrying Value   $ 3,668 $ 3,668   3,521          
Balance   $ 2,733 $ 2,733              
Property Debt, Maturity Date     Nov. 01, 2023              
Property Debt, Interest Rate   4.76% 4.76%              
Unconsolidated Joint Venture Other Property [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Carrying Value   $ 194,779 $ 194,779   209,091          
Balance   $ 793,404 $ 793,404              
Unconsolidated Joint Venture Other Property [Member] | Riverwalk Retail [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Rentable Square Feet (sf) | ft²   30,745 30,745              
Company's Effective Ownership %   20.00% 20.00%         80.00%    
Carrying Value         1,467          
Unconsolidated Joint Venture Other Property [Member] | Hyatt Regency Hotel Jersey City [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Number of Apartment Units | item   351 351              
Company's Effective Ownership %   50.00% 50.00%              
Carrying Value                
Balance   $ 100,000 $ 100,000              
Property Debt, Maturity Date     Oct. 01, 2026              
Property Debt, Interest Rate   3.668% 3.668%              
Unconsolidated Joint Venture Other Property [Member] | Other [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Carrying Value   $ 100 $ 100   $ 729