Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014 sqft Property
Commitments and Contingencies Disclosure [Abstract]
Number of industrial properties committed to development	6
Gross leasable area (GLA) of industrial properties committed to development	1,800,000
Estimated total construction costs	$ 94,600
Estimated total construction costs remaining to be funded	$ 52,000