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Fair Value Measurements (Details 4) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||||||||||||||||
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Dec. 31, 2011
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Dec. 31, 2012
Discounted cash flow
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Dec. 31, 2012
Yield Analysis
|
Dec. 31, 2012
Maximum
Discounted cash flow
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Dec. 31, 2012
Weighted Average
Discounted cash flow
|
Dec. 31, 2012
Minimum
Discounted cash flow
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Dec. 31, 2012
Fair value measurement on a recurring basis
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Dec. 31, 2012
Properties, net
Fair value measurement on a nonrecurring basis
Significant Unobservable Inputs (Level 3)
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Dec. 31, 2011
Properties, net
Fair value measurement on a nonrecurring basis
Significant Unobservable Inputs (Level 3)
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| Quantitative information for significant unobservable inputs used for Level 3 fair value measurements | |||||||||||||||||
| Fair value on measurement date | $ 163 | $ 379,684 | [1] | $ 320,894 | [1] | ||||||||||||
| Discount rate | 11.00% | 10.40% | 10.00% | 15.60% | |||||||||||||
| Terminal capitalization rate | 10.00% | 8.90% | 8.70% | ||||||||||||||
| Market rent growth rate | 3.00% | [2] | |||||||||||||||
| Expense growth rate | 3.00% | [2] | |||||||||||||||
| Yield | 12.00% | [2] | |||||||||||||||
| Market rent rate (in dollars per square foot) | 8.50 | [2] | |||||||||||||||
| Leasing costs per square foot | 20 | [2] | |||||||||||||||
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