Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (Narrative) (Details)

v3.19.1
Investments In Unconsolidated Joint Ventures (Narrative) (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
USD ($)
ft²
property
item
Mar. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Schedule of Equity Method Investments [Line Items]      
Carrying Value $ 212,961   $ 232,750
Amount outstanding 588,805   790,939
Management, leasing, development and other services fees 300 $ 600  
Accounts receivable due from unconsolidated joint ventures 400   $ 200
Maximum exposure to loss 151,300    
Estimated future funding commitments $ 35,800    
Unconsolidated Joint Venture Office Buildings [Member]      
Schedule of Equity Method Investments [Line Items]      
Number of properties | property 2    
Area of property (in square feet) | ft² 200,000    
Unconsolidated Joint Venture Retail Buildings [Member]      
Schedule of Equity Method Investments [Line Items]      
Number of properties | property 2    
Area of mixed use project (in square feet) | ft² 81,700    
Unconsolidated Joint Venture Multi-Family Properties [Member]      
Schedule of Equity Method Investments [Line Items]      
Number of properties | property 7    
Number of units | item 2,611    
Unconsolidated Joint Venture Hotel [Member]      
Schedule of Equity Method Investments [Line Items]      
Number of units | item 351    
Unconsolidated Joint Venture Development Projects [Member]      
Schedule of Equity Method Investments [Line Items]      
Number of units | item 360    
Unconsolidated Joint Venture Land Parcels [Member]      
Schedule of Equity Method Investments [Line Items]      
Number of units | item 3,738    
Unconsolidated Joint Ventures [Member] | Guarantee of Indebtedness of Others [Member]      
Schedule of Equity Method Investments [Line Items]      
Maximum borrowing capacity $ 317,100    
Amount outstanding 205,100    
Unconsolidated Joint Ventures [Member] | Parent Company [Member] | Guarantee of Indebtedness of Others [Member]      
Schedule of Equity Method Investments [Line Items]      
Maximum guaranteed amount 35,800    
Guaranteed amount $ 24,600    
Minimum [Member]      
Schedule of Equity Method Investments [Line Items]      
Percentage of interest in venture 20.00%    
Maximum [Member]      
Schedule of Equity Method Investments [Line Items]      
Percentage of interest in venture 85.00%    
Variable Interest Entity [Member]      
Schedule of Equity Method Investments [Line Items]      
Carrying Value $ 115,500    
Number of VIEs | property 4