Investment in Real Estate - Additional Information (Detail) $ in Thousands, ft² in Millions	3 Months Ended
	Mar. 31, 2016 USD ($) ft² Property
Real Estate [Line Items]
Number of industrial properties acquired | Property	1
Gross leasable area (GLA) of industrial properties acquired | ft²	0.1
Purchase price of industrial properties acquired	$ 51,489
Number of land parcels acquired | Property	0
Land (A)	$ 43,848	[1]
Number of days to realize tax deferrals after the acquisition date - 1031 Exchange	180 days
Number of industrial properties held for sale | Property	2
Gross leasable area (GLA) of industrial properties held for sale | ft²	0.1
Number of industrial properties sold | Property	5
Gross leasable area (GLA) of industrial properties sold | ft²	0.4
Proceeds from sale of industrial properties	$ 16,319
Gain on sale of real estate	7,251
Land Parcel
Real Estate [Line Items]
Land (A)	$ 12,864

[1] Included in the purchase price for the three months ended March 31, 2016, is $12,864 relating to a land parcel that we acquired and transferred to a special purpose entity to facilitate a potential Section 1031 exchange under the Code. To realize the tax deferral available under the Section 1031 exchange, we must complete the Section 1031 exchange and take title to the to-be-exchanged land parcel within 180 days of the acquisition date. We determined that this special purpose entity is a variable interest entity ("VIE"), and we are the primary beneficiary. Therefore, we consolidate this entity. As of March 31, 2016, this VIE has no significant liabilities or significant cash flows.