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Intangible Assets (Textual) (Details) - Tenant Move-Outs Prior to End of the Lease Term [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Finite Lived Intangible Assets [Line Items] |  |  |
Intangible Assets Written Off Through Accelerated Amortization | $ 0.5 | $ 0.8 | $ 1.6
Intangible Liabilities Written Off Through Accelerated Amortization |  |  |

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- Definition Intangible assets written off through accelerated amortization. + References No definition available. + Details
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Balance Type: | debit
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- Definition Intangible liabilities written off through accelerated amortization. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Details
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Balance Type: |
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