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Segment Reporting (Details 3) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Segment Reporting |  |
Total revenue | $ 522,326 | $ 508,498
NOI | $ 362,583 | $ 350,881
% NOI change from prior year | 3.30% | 21.70%
Gross real estate | $ 20,919,484 | $ 19,721,229
Gross real estate assets held for sale |  | 20,341
Avalon at Edgewater [Member] |  |
Segment Reporting |  |
Gain on business interruption insurance recovery |  | 20,306
Operating Segments | Established |  |
Segment Reporting |  |
Total revenue | 388,908 | 366,803
NOI | $ 276,106 | $ 258,640
% NOI change from prior year | 3.90% | 7.90%
Gross real estate | $ 13,393,588 | $ 13,155,449
Operating Segments | Established | New England [Member] |  |
Segment Reporting |  |
Total revenue | 58,607 | 57,196
NOI | $ 37,816 | $ 36,508
% NOI change from prior year | 3.30% | 15.90%
Gross real estate | $ 1,875,024 | $ 1,860,863
Operating Segments | Established | Metro NY/NJ |  |
Segment Reporting |  |
Total revenue | 87,544 | 83,079
NOI | $ 60,060 | $ 56,702
% NOI change from prior year | 3.80% | 3.20%
Gross real estate | $ 2,903,317 | $ 2,883,958
Operating Segments | Established | Mid-Atlantic |  |
Segment Reporting |  |
Total revenue | 55,755 | 57,530
NOI | $ 39,147 | $ 40,063
% NOI change from prior year | 3.70% | 1.30%
Gross real estate | $ 2,062,311 | $ 2,330,106
Operating Segments | Established | Pacific Northwest |  |
Segment Reporting |  |
Total revenue | 20,454 | 19,289
NOI | $ 14,815 | $ 14,078
% NOI change from prior year | 5.20% | 5.80%
Gross real estate | $ 731,537 | $ 795,228
Operating Segments | Established | Northern California |  |
Segment Reporting |  |
Total revenue | 83,323 | 78,452
NOI | $ 63,717 | $ 60,248
% NOI change from prior year | 2.00% | 11.50%
Gross real estate | $ 2,815,589 | $ 2,651,741
Operating Segments | Established | Southern California |  |
Segment Reporting |  |
Total revenue | 83,225 | 71,257
NOI | $ 60,551 | $ 51,041
% NOI change from prior year | 6.20% | 9.80%
Gross real estate | $ 3,005,810 | $ 2,633,553
Operating Segments | Other Stabilized |  |
Segment Reporting |  |
Total revenue | 74,021 | 73,004
NOI | 51,571 | 56,914
Gross real estate | 3,032,689 | 2,196,700
Operating Segments | Development / Redevelopment |  |
Segment Reporting |  |
Total revenue | 55,547 | 53,251
NOI | 34,906 | 35,327
Gross real estate | 4,276,266 | 3,802,952
Land Held for Future Development |  |
Segment Reporting |  |
Gross real estate | 103,954 | 477,072
Non-allocated |  |
Segment Reporting |  |
Total revenue | 1,200 | 1,524
Gross real estate | 112,987 | 89,056
Continuing Operations |  |
Segment Reporting |  |
Total revenue | $ 519,676 | $ 494,582

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