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Indebtedness - Additional Information (Detail)
$ in Thousands, ft² in Millions
6 Months Ended
Jun. 30, 2016
USD ($)
ft²
Property
Dec. 31, 2015
USD ($)
Debt Disclosure [Line Items]    
Assumed mortgage loan $ (4,513)  
Number of industrial properties acquired | Property 2  
Gross leasable area (GLA) of industrial properties acquired | ft² 0.3  
Assumed mortgage, premium $ (529)  
2016 Notes    
Debt Disclosure [Line Items]    
Extinguishment of debt, amount 159,679  
Mortgages    
Debt Disclosure [Line Items]    
Unamortized deferred financing costs 3,385 $ 3,714
Assumed mortgage loan $ 4,513  
Number of industrial properties acquired | Property 1  
Gross leasable area (GLA) of industrial properties acquired | ft² 0.1  
Assumed mortgage, fixed interest rate 7.35%  
Assumed mortgage, term 25 years  
Assumed mortgage, premium $ 529  
Extinguishment of debt, amount 57,901  
Net carrying value of industrial properties collateralized by mortgage loans 670,417  
Senior Unsecured Notes    
Debt Disclosure [Line Items]    
Unamortized deferred financing costs 407 499
Unsecured Term Loan    
Debt Disclosure [Line Items]    
Unamortized deferred financing costs 3,696 4,030
Unsecured Credit Facility    
Debt Disclosure [Line Items]    
Unamortized deferred financing costs $ 3,540 $ 4,204