Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Buildings sqft Property	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies Disclosure [Abstract]
Number of leased properties granting the tenants options to purchase the property	3
Letter of credit and performance bonds in the aggregate amount	$ 6,102
Number of industrial buildings committed to development	3
Gross leasable area (GLA) of industrial properties committed to development	800,000
Estimated total construction costs	49,200
Estimated total construction costs remaining to be funded	23,900
Operating and ground lease expense	$ 1,440	$ 1,565	$ 1,955