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Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Accounting Policies [Abstract] |  |  |  |
Average amortization period for acquired leases | 8 months | 7 months | 8 months | 7 months
Capitalized interest | $ 5.1 | $ 5.4 | $ 10.4 | $ 10.3
Capitalized real estate taxes | $ 1.1 | $ 1.4 | $ 2.1 | $ 3.0

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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