Commitments and Contingencies - Additional Information (Detail) $ in Thousands, ft² in Millions	Mar. 31, 2016 USD ($) ft² Property
Commitments and Contingencies Disclosure [Abstract]
Number of industrial properties under construction | Property	5
Gross leasable area (GLA) of industrial properties under construction | ft²	1.5
Estimated total investment	$ 94,100
Estimated total investment remaining to be funded	$ 50,300