Investments in Joint Ventures - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013 Property sqft	Sep. 30, 2012	Sep. 30, 2013 Property sqft	Sep. 30, 2012	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	697		697
Gross leasable area (GLA) of industrial properties owned	62,500,000		62,500,000
Investment in Joint Venture	$ 1,163		$ 1,163		$ 1,012
Fees received from joint ventures	59	295	180	439
2003 Net Lease Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	4		4
Gross leasable area (GLA) of industrial properties owned	2,500,000		2,500,000
Investment in Joint Venture	$ 1,163		$ 1,163
2007 Europe Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	0		0
Equity interest	10.00%		10.00%