Investments In Unconsolidated Joint Ventures (Narrative) (Details)
$ in Thousands |
3 Months Ended |
|
|
Mar. 31, 2018
USD ($)
ft²
property
item
|
Mar. 31, 2017
USD ($)
|
Dec. 31, 2017
USD ($)
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Carrying Value |
$ 249,513
|
|
$ 252,626
|
| Number of units | item |
365
|
|
|
| Area of mixed use project (in square feet) | ft² |
81,700
|
|
|
| Amount outstanding |
$ 863,738
|
|
822,288
|
| Management, leasing, development and other services fees |
600
|
$ 900
|
|
| Accounts receivable due from unconsolidated joint ventures |
500
|
|
$ 700
|
| Maximum exposure to loss |
164,600
|
|
|
| Estimated future funding commitments |
$ 36,000
|
|
|
| Unconsolidated Joint Venture Office Buildings [Member] |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Number of properties | property |
4
|
|
|
| Unconsolidated Joint Venture Office And Retail Buildings [Member] |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Area of property (in square feet) | ft² |
500,000
|
|
|
| Unconsolidated Joint Venture Retail Buildings [Member] |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Number of properties | property |
2
|
|
|
| Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Number of properties | property |
8
|
|
|
| Number of units | item |
3,275
|
|
|
| Unconsolidated Joint Venture Hotel [Member] |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Number of units | item |
350
|
|
|
| Unconsolidated Joint Venture Development Projects [Member] |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Number of units | item |
419
|
|
|
| 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 |
$ 318,000
|
|
|
| Amount outstanding |
202,700
|
|
|
| Unconsolidated Joint Ventures [Member] | Parent Company [Member] | Guarantee of Indebtedness of Others [Member] |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Maximum guaranteed amount |
36,000
|
|
|
| Guaranteed amount |
$ 24,400
|
|
|
| Minimum [Member] |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Percentage of interest in venture |
12.50%
|
|
|
| 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 |
$ 128,600
|
|
|
| Number of VIEs | property |
4
|
|
|