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Organization - Additional Information (Details)
ft² in Millions
12 Months Ended
Dec. 31, 2017
ft²
Property
State
Dec. 31, 2016
Organization [Line Items]    
Company's ownership interest 96.80% 96.70%
Limited partners' ownership interest in the Operating Partnership 3.20% 3.30%
Number of industrial properties owned | Property 488  
Number of states in which industrial properties are located | State 21  
Gross leasable area (GLA) of industrial properties owned | ft² 60.2  
Other Real Estate Partnerships    
Organization [Line Items]    
Company's ownership interest 100.00%  
Number of Other Real Estate Partnerships 8  
Operating Partnership's minimum ownership interest in the Other Real Estate Partnerships 99.00%  
General partners' minimum ownership interest in the Other Real Estate Partnerships 0.01%