Real Estate and Intangible Assets - Weighted Average Amortization Period for Intangible Assets Acquired and Liabilities Assumed (Detail)
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12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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Acquired Finite-Lived Intangible Assets [Line Items] | ||
All intangible assets and liabilities | 2 years 10 months 24 days | 3 years 2 months 12 days |
In-Place Leases [Member]
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Acquired Finite-Lived Intangible Assets [Line Items] | ||
All intangible assets and liabilities | 2 years | 3 years 1 month 6 days |
Leasing Commissions [Member]
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Acquired Finite-Lived Intangible Assets [Line Items] | ||
All intangible assets and liabilities | 6 years 9 months 18 days | 4 years 8 months 12 days |
Customer Relationships [Member]
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Acquired Finite-Lived Intangible Assets [Line Items] | ||
All intangible assets and liabilities | 5 years 9 months 18 days | |
Below-Market Leases [Member]
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Acquired Finite-Lived Intangible Assets [Line Items] | ||
All intangible assets and liabilities | 2 years | 9 months 18 days |