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Mortgages, Loans Payable And Other Obligations (Narrative) (Details) (USD $)
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6 Months Ended | ||
|---|---|---|---|
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Jun. 30, 2011
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Jun. 30, 2010
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Dec. 31, 2010
|
|
| Book value of the encumbered property | $ 964,384,000 | Â | Â |
| Cash paid for interest | 58,664,000 | 74,973,000 | Â |
| Interest capitalized | 753,000 | 775,000 | Â |
| Total indebtedness | 1,869,252,000 | Â | 2,089,494,000 |
| Weighted average interest rate | 6.57% | Â | 5.97% |
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Revolving Credit Facility Borrowings And Other Variable Rate Mortgage Debt [Member]
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 |  |  |
| Total indebtedness | 20,000,000 | Â | 239,000,000 |
| Weighted average rate of variable rate mortgage debt | 1.89% | Â | 0.90% |
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Fixed Rate Debt And Other Obligations [Member]
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 |  |  |
| Total indebtedness | $ 1,849,252,000 | Â | $ 1,850,494,000 |
| Weighted average interest rate of the indebtedness | 6.62% | Â | 6.62% |