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Investment in Real Estate - Additional Information (Details) $ in Thousands, ft² in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) ft² Property | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Real Estate Properties [Line Items] |  |  |
Number of industrial properties | Property | 488 |  |
Gross leasable area (GLA) of industrial properties | ft² | 60.2 |  |
Impairment of Real Estate | $ | $ 0 | $ 0 | $ 626
REIT Acquisition |  |  |
Real Estate Properties [Line Items] |  |  |
Number of industrial properties | Property | 1 |  |
Gross leasable area (GLA) of industrial properties | ft² | 0.2 |  |
Purchase Price | $ | $ 20,962 |  |
Percentage of Voting Interests Acquired | 100.00% |  |

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- Definition The amount of assets acquired. + References No definition available. + Details
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- Definition Area of a real estate property. + References No definition available. + Details
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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2921-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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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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- Details
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