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Summary of Significant Accounting Policies - Summary of Deferred Leasing Intangibles (Phantoms) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Accounting Policies [Abstract] |  |
Total accumulated amortization of deferred leasing intangibles included in total assets | $ 29,604 | $ 27,336
Total accumulated amortization of deferred leasing intangibles included in total liabilities | $ 10,578 | $ 10,193

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- Definition Amount of accumulated amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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