Recent Transactions (Schedule Of Properties Which Commenced Initial Operations) (Details)
$ in Thousands |
9 Months Ended |
|
Sep. 30, 2018
USD ($)
item
|
|---|
| Real Estate Properties [Line Items] |
|
| Number of Apartment Units | item |
1,153
|
| Total Development Costs |
$ 396,056
|
| Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Number of Apartment Units | item |
2,922
|
| 145 Front At City Square [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Number of Apartment Units | item |
365
|
| Total Development Costs |
$ 97,172
|
| Signature Place At Morris Plains [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Number of Apartment Units | item |
197
|
| Total Development Costs |
$ 56,643
|
| Portside 5/6 [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Number of Apartment Units | item |
296
|
| Total Development Costs |
$ 114,723
|
| Riverhouse 11 At Port Imperial [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Number of Apartment Units | item |
295
|
| Total Development Costs |
$ 127,518
|
| Expected costs |
8,200
|
| Riverhouse 11 At Port Imperial [Member] | Cash [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Expected costs |
2,700
|
| Land [Member] | 145 Front At City Square [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Total Development Costs |
4,400
|
| Land [Member] | Signature Place At Morris Plains [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Total Development Costs |
900
|
| Construction Loan [Member] | 145 Front At City Square [Member] |
|
| Real Estate Properties [Line Items] |
|
| Expected costs |
3,500
|
| Construction Loan [Member] | Signature Place At Morris Plains [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Expected costs |
200
|
| Construction Loan [Member] | Portside 5/6 [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Expected costs |
3,300
|
| Construction Loan [Member] | Riverhouse 11 At Port Imperial [Member] | Unconsolidated Joint Venture Multi-Family Properties [Member] |
|
| Real Estate Properties [Line Items] |
|
| Expected costs |
$ 5,500
|