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Segment Information (Tables) | 9 Months Ended
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Sep. 30, 2011
Segment Information [Abstract] |
Segment information |
|  | Pennsylvania |  |  | Philadelphia |  |  |  |  |  |  | New Jersey |  |  | Richmond, |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Suburbs |  |  | CBD |  |  | Metropolitan, D.C. |  |  | /Delaware |  |  | Virginia |  |  | Austin, Texas |  |  | California |  |  | Corporate |  |  | Total |
As of September 30, 2011: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate investments, at cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating properties |  | $ | 1,214,060 |  |  | $ | 951,790 |  |  | $ | 1,369,899 |  |  | $ | 570,804 |  |  | $ | 306,039 |  |  | $ | 257,208 |  |  | $ | 250,928 |  |  | $ | — |  |  | $ | 4,920,728 |
Construction-in-progress |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 36,246 |  |  |  | 36,246 |
Land inventory |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 120,470 |  |  |  | 120,470 |
As of December 31, 2010: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate investments, at cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating properties |  | $ | 1,199,957 |  |  | $ | 911,354 |  |  | $ | 1,359,776 |  |  | $ | 568,413 |  |  | $ | 294,406 |  |  | $ | 254,019 |  |  | $ | 246,186 |  |  | $ | — |  |  | $ | 4,834,111 |
Construction-in-progress |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 33,322 |  |  |  | 33,322 |
Land inventory |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 110,055 |  |  |  | 110,055 |
For the three-months ended September 30, 2011: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ | 38,864 |  |  | $ | 31,098 |  |  | $ | 31,554 |  |  | $ | 22,096 |  |  | $ | 9,334 |  |  | $ | 7,453 |  |  | $ | 5,567 |  |  | $ | (302 | ) |  | $ | 145,664 |
Property operating expenses, real estate taxes and third party management expenses |  |  | 14,224 |  |  |  | 11,541 |  |  |  | 11,526 |  |  |  | 10,576 |  |  |  | 3,664 |  |  |  | 3,233 |  |  |  | 3,262 |  |  |  | (421 | ) |  |  | 57,605 |
Net operating income |  | $ | 24,640 |  |  | $ | 19,557 |  |  | $ | 20,028 |  |  | $ | 11,520 |  |  | $ | 5,670 |  |  | $ | 4,220 |  |  | $ | 2,305 |  |  | $ | 119 |  |  | $ | 88,059 |
For the three-months ended September 30, 2010: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ | 36,809 |  |  | $ | 24,617 |  |  | $ | 33,881 |  |  | $ | 23,944 |  |  | $ | 8,919 |  |  | $ | 8,014 |  |  | $ | 5,503 |  |  | $ | (195 | ) |  | $ | 141,492 |
Property operating expenses, real estate taxes and third party management expenses |  |  | 14,591 |  |  |  | 9,859 |  |  |  | 11,665 |  |  |  | 11,930 |  |  |  | 3,287 |  |  |  | 3,204 |  |  |  | 3,171 |  |  |  | (232 | ) |  |  | 57,475 |
Net operating income |  | $ | 22,218 |  |  | $ | 14,758 |  |  | $ | 22,216 |  |  | $ | 12,014 |  |  | $ | 5,632 |  |  | $ | 4,810 |  |  | $ | 2,332 |  |  | $ | 37 |  |  | $ | 84,017 |
For the nine-months ended September 30, 2011: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ | 118,295 |  |  | $ | 93,520 |  |  | $ | 96,813 |  |  | $ | 64,526 |  |  | $ | 27,409 |  |  | $ | 23,202 |  |  | $ | 16,359 |  |  | $ | (849 | ) |  | $ | 439,275 |
Property operating expenses, real estate taxes and third party management expenses |  |  | 44,554 |  |  |  | 34,954 |  |  |  | 36,012 |  |  |  | 32,302 |  |  |  | 10,667 |  |  |  | 9,740 |  |  |  | 8,772 |  |  |  | (895 | ) |  |  | 176,106 |
Net operating income |  | $ | 73,741 |  |  | $ | 58,566 |  |  | $ | 60,801 |  |  | $ | 32,224 |  |  | $ | 16,742 |  |  | $ | 13,462 |  |  | $ | 7,587 |  |  | $ | 46 |  |  | $ | 263,169 |
For the nine-months ended September 30, 2010: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ | 113,622 |  |  | $ | 61,579 |  |  | $ | 103,285 |  |  | $ | 71,884 |  |  | $ | 27,087 |  |  | $ | 23,979 |  |  | $ | 17,374 |  |  | $ | (821 | ) |  | $ | 417,989 |
Property operating expenses, real estate taxes and third party management expenses |  |  | 44,218 |  |  |  | 25,643 |  |  |  | 36,041 |  |  |  | 34,716 |  |  |  | 10,111 |  |  |  | 9,968 |  |  |  | 8,853 |  |  |  | (713 | ) |  |  | 168,837 |
Net operating income |  | $ | 69,404 |  |  | $ | 35,936 |  |  | $ | 67,244 |  |  | $ | 37,168 |  |  | $ | 16,976 |  |  | $ | 14,011 |  |  | $ | 8,521 |  |  | $ | (108 | ) |  | $ | 249,152 |
Reconciliation of consolidated net operating income |
|  | Three-month periods |  |  | Nine-month periods |
|  | ended September 30, |  |  | ended September 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
|  | (amounts in thousands) |  |  | (amounts in thousands) |
Consolidated net operating income |  | $ | 88,059 |  |  | $ | 84,017 |  |  | $ | 263,169 |  |  | $ | 249,152 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  | (32,346 | ) |  |  | (34,488 | ) |  |  | (99,477 | ) |  |  | (97,222 | )
Deferred financing costs |  |  | (1,846 | ) |  |  | (827 | ) |  |  | (3,844 | ) |  |  | (2,700 | )
Depreciation and amortization |  |  | (54,252 | ) |  |  | (51,644 | ) |  |  | (163,940 | ) |  |  | (154,962 | )
Administrative expenses |  |  | (6,177 | ) |  |  | (5,753 | ) |  |  | (18,311 | ) |  |  | (18,498 | )
Plus: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  | 523 |  |  |  | 726 |  |  |  | 1,385 |  |  |  | 2,554 |
Historic tax credit transaction income |  |  | 12,026 |  |  |  | — |  |  |  | 12,026 |  |  |  | — |
Equity in income of real estate ventures |  |  | 418 |  |  |  | 1,035 |  |  |  | 2,739 |  |  |  | 3,356 |
Net gain on sales of interests in real estate |  |  | — |  |  |  | — |  |  |  | 2,791 |  |  |  | — |
Gain (loss) on early extinguishment of debt |  |  | 176 |  |  |  | (64 | ) |  |  | (580 | ) |  |  | (1,701 | )
Loss from continuing operations |  |  | 6,581 |  |  |  | (6,998 | ) |  |  | (4,042 | ) |  |  | (20,021 | )
Income from discontinued operations |  |  | 30 |  |  |  | 382 |  |  |  | 3,929 |  |  |  | 7,406 |
Net income (loss) |  | $ | 6,611 |  |  | $ | (6,616 | ) |  | $ | (113 | ) |  | $ | (12,615 | )

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