Quarterly report pursuant to Section 13 or 15(d)

Real Estate Dispositions, Held for Sale and Impairment Charges - Summary of Property Sold (Details)

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Real Estate Dispositions, Held for Sale and Impairment Charges - Summary of Property Sold (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
ft²
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
ft²
Sep. 30, 2017
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Aggregate Gain on Sale of Real Estate, net $ 0 $ 1 $ 1,844 $ 3,993
Disposed of by sale        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Aggregate Square Footage Sold | ft² 166,200   166,200  
Aggregate Sales Price     $ 11,100  
Aggregate Sales Costs     327  
Aggregate Gain on Sale of Real Estate, net     $ 1,844