Investments In Unconsolidated Joint Ventures (Summary Of Company's Investment In Unconsolidated Joint Ventures) (Details) (USD $) In Thousands, unless otherwise specified
|
Jun. 30, 2013
|
Dec. 31, 2012
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
$ 135,722
|
$ 132,339
|
Plaza VIII & IX Associates, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
4,042
|
4,321
|
South Pier At Harborside [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
(2,180)
|
(1,225)
|
Red Bank Corporate Plaza, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
3,864
|
3,876
|
12 Vreeland Associates, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
5,465
|
12,840
|
Boston Downtown Crossing [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
|
13,012
|
Gale Jefferson, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
|
1,029
|
Stamford SM LLC [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
35,094
|
34,006
|
Marbella RoseGarden, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
16,241
|
16,918
|
RoseGarden Monaco Holdings, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
3,940
|
4,761
|
Rosewood Lafayette Holdings, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
1,413
|
1,988
|
PruRose Port Imperial South 15, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
|
606
|
Rosewood Morristown, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
6,786
|
7,091
|
Overlook Ridge, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
144
|
31
|
Overlook Ridge JV 2C/3B, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
|
179
|
Roseland/North Retail, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
2,029
|
2,161
|
BNES Associates III [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
1,790
|
1,955
|
Portside Master Company, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
3,550
|
3,651
|
PruRose Port Imperial South 13, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
2,627
|
2,920
|
Roseland/Port Imperial Partners, L.P. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
2,689
|
2,582
|
RoseGarden Marbella South, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
6,617
|
6,182
|
PruRose Riverwalk G, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
3,646
|
4,136
|
Elmajo Urban Renewal Associates, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
322
|
629
|
Estuary Urban Renewal Unit B, LLC [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
125
|
220
|
Riverpark At Harrison I, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
3,082
|
2,606
|
150 Main Street, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
2,635
|
2,395
|
RoseGarden Monaco, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
1,193
|
1,165
|
Hillsborough 206 Holdings, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
1,979
|
1,967
|
Grand Jersey Waterfront Urban Renewal Associates, L.L.C. [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
362
|
337
|
Crystal House Apartments Investors LLC [Member]
|
|
|
Schedule of Equity Method Investments [Line Items] |
|
|
Company's investments in unconsolidated joint ventures |
$ 28,267
|
|