Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Construction Projects) (Narrative) (Details)

v3.20.2
Commitments And Contingencies (Construction Projects) (Narrative) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
item
Sep. 30, 2019
USD ($)
Sep. 30, 2020
USD ($)
item
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Commitments And Contingencies [Line Items]          
Costs of the project incurred $ 3,598 $ 4,402 $ 10,564 $ 14,605  
Amount outstanding $ 156,000   156,000   $ 329,000
Port Imperial South 9 [Member]          
Commitments And Contingencies [Line Items]          
Costs of the project incurred     $ 90,800    
Delivery date to tenant     first quarter 2021    
Number of units | item 313   313    
Amount outstanding $ 39,900   $ 39,900    
Total project costs     142,900    
Amount to fund $ 50,900   50,900    
The Upton At Short Hills [Member]          
Commitments And Contingencies [Line Items]          
Costs of the project incurred     $ 68,500    
Delivery date to tenant     first quarter 2021    
Number of units | item 198   198    
Amount outstanding $ 33,100   $ 33,100    
Total project costs     99,400    
Amount to fund $ 35,400   35,400    
25 Christopher Columbus [Member]          
Commitments And Contingencies [Line Items]          
Costs of the project incurred     $ 296,100    
Delivery date to tenant     first quarter 2022    
Number of units | item 750   750    
Amount outstanding $ 126,600   $ 126,600    
Total project costs     469,500    
Amount to fund 169,500   169,500    
Construction Loan [Member] | Port Imperial South 9 [Member]          
Commitments And Contingencies [Line Items]          
Amount outstanding 92,000   92,000    
Construction Loan [Member] | The Upton At Short Hills [Member]          
Commitments And Contingencies [Line Items]          
Amount outstanding 64,000   64,000    
Construction Loan [Member] | 25 Christopher Columbus [Member]          
Commitments And Contingencies [Line Items]          
Amount outstanding $ 300,000   $ 300,000