Investments in Joint Ventures - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013 Property sqft	Jun. 30, 2012	Jun. 30, 2013 Property sqft	Jun. 30, 2012	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	638		638
Gross leasable area (GLA) of industrial properties owned	55,300,000		55,300,000
Investment in Joint Venture	$ 1,079		$ 1,079		$ 1,012
Receivables from joint ventures	20		20		19
Fees received from joint ventures	63	68	121	144
2003 Net Lease Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	5		5
Gross leasable area (GLA) of industrial properties owned	2,700,000		2,700,000
Investment in Joint Venture	$ 1,079		$ 1,079
2007 Europe Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	0		0
Equity interest	10.00%		10.00%