Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Commitments And Contingencies (Construction Projects) (Narrative) (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
item
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Commitments And Contingencies [Line Items]      
Costs of the project incurred $ 4,092 $ 3,853  
Amount outstanding     $ 25,000
Port Imperial South 9 [Member]      
Commitments And Contingencies [Line Items]      
Construction costs incurred $ 112,000    
Delivery date to tenant second quarter 2021    
Number of units | item 313    
Amount outstanding $ 60,200    
Total project costs 143,800    
Amount to fund 51,800    
25 Christopher Columbus [Member]      
Commitments And Contingencies [Line Items]      
Construction costs incurred $ 353,400    
Delivery date to tenant first quarter 2022    
Number of units | item 750    
Amount outstanding $ 183,900    
Total project costs 469,500    
Amount to fund 169,500    
Construction Loan [Member] | Port Imperial South 9 [Member]      
Commitments And Contingencies [Line Items]      
Amount outstanding 92,000    
Construction Loan [Member] | 25 Christopher Columbus [Member]      
Commitments And Contingencies [Line Items]      
Amount outstanding $ 300,000