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Fair Value Measurements (Details 3) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Assets and liabilities measured at fair value on a non-recurring basis | ||||||||
| Impairment losses | $ 66 | $ 5,857 | $ 1,368 | $ 5,857 | ||||
| Exit costs on property dispositions | 0 | 186 | ||||||
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Properties, net | Fair value measurement on a nonrecurring basis
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| Assets and liabilities measured at fair value on a non-recurring basis | ||||||||
| Impairment losses | 21,888 | [1] | 1,371 | 30,940 | [1] | |||
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Properties, net | Fair value measurement on a nonrecurring basis | Significant Unobservable Inputs (Level 3)
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| Assets and liabilities measured at fair value on a non-recurring basis | ||||||||
| Exit costs on property dispositions | 186 | 186 | ||||||
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Property Conveyances | Fair value measurement on a nonrecurring basis
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| Assets and liabilities measured at fair value on a non-recurring basis | ||||||||
| Impairment losses | 10,400 | |||||||
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Strategic Reallocation Plan | Fair value measurement on a nonrecurring basis
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| Assets and liabilities measured at fair value on a non-recurring basis | ||||||||
| Exit costs on property dispositions | 186 | |||||||
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Other Properties with Shortened Holding Periods | Fair value measurement on a nonrecurring basis
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| Assets and liabilities measured at fair value on a non-recurring basis | ||||||||
| Number of properties with a shortened holding period (in properties) | 2 | |||||||
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Greater Baltimore | Other Properties with Shortened Holding Periods | Fair value measurement on a nonrecurring basis
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| Assets and liabilities measured at fair value on a non-recurring basis | ||||||||
| Impairment losses | 5,900 | |||||||
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Discontinued Operations | Strategic Reallocation Plan | Fair value measurement on a nonrecurring basis
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| Assets and liabilities measured at fair value on a non-recurring basis | ||||||||
| Impairment losses | $ 14,800 | |||||||
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