Acquisitions of Real Estate - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 28, 2013	Dec. 31, 2013	Dec. 31, 2013 sqft	Dec. 31, 2012
Business Combinations [Abstract]
Cash consideration paid for acquisition	$ 10,250,000	$ 47,963,000
Debt finance obtained for acquisition	10,250,000
Transaction costs incurred related to acquisition			600,000
Aggregate costs related to acquisition		21,200,000	21,200,000
Area Of former semiconductor plant			700,000
Aggregate consideration related to acquisition				$ 63,300,000