Annual report pursuant to Section 13 and 15(d)

Investments In Unconsolidated Joint Ventures (Narrative) (Details)

v3.20.4
Investments In Unconsolidated Joint Ventures (Narrative) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
ft²
property
item
Dec. 31, 2019
USD ($)
item
Schedule of Equity Method Investments [Line Items]    
Carrying Value $ 162,382 $ 209,091
Number of units | item 326 208
Amount outstanding $ 25,000 $ 329,000
Management, leasing, development and other services fees 2,200 2,400
Accounts receivable due from unconsolidated joint ventures 300 600
Maximum exposure to loss 142,200  
Estimated future funding commitments 33,200  
Variable Interest Entity, Primary Beneficiary [Member]    
Schedule of Equity Method Investments [Line Items]    
Carrying Value $ 109,000  
Number of VIEs | property 3  
Unconsolidated Joint Venture Other Property [Member]    
Schedule of Equity Method Investments [Line Items]    
Carrying Value $ 162,382 $ 209,091
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]    
Area of mixed use project (in square feet) | ft² 51,000  
Unconsolidated Joint Venture Multi-Family Properties [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of properties | property 6  
Number of units | item 1,786  
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 Development Projects [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of VIEs | property 1  
Unconsolidated Joint Venture Land Parcels [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of units | item 1,621  
Unconsolidated Joint Ventures [Member] | Guarantee of Indebtedness of Others [Member]    
Schedule of Equity Method Investments [Line Items]    
Maximum borrowing capacity $ 304,000  
Amount outstanding 267,600  
Unconsolidated Joint Ventures [Member] | Parent Company [Member] | Guarantee of Indebtedness of Others [Member]    
Schedule of Equity Method Investments [Line Items]    
Maximum borrowing capacity 33,200  
Amount outstanding $ 29,600  
Unconsolidated Joint Venture Property [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of VIEs | property 2  
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%