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Real Estate and Intangible Assets - Summary of Acquired Properties (Details) $ in Thousands | 9 Months Ended
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Sep. 30, 2018 USD ($) ft² | Sep. 30, 2017 USD ($) ft²
Business Acquisition [Line Items] |  |
Purchase Price | $ 22,800 | $ 94,421
Series of Property Acquisitions |  |
Business Acquisition [Line Items] |  |
Square Footage | ft² | 285,254 | 666,451
Lease Term | 11 years 8 months 12 days | 10 years 8 months 12 days
Purchase Price | $ 22,800 | $ 94,421
Acquisition Expenses | 225 | 1,171
Annualized GAAP Rent | 1,851 | 10,776
Debt Issued or Assumed | $ 4,745 | $ 54,887

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- Definition Amount of increase in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from new investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Footnote 6)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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