Investments in Joint Ventures - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 Property sqft	Mar. 31, 2012	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	710
Gross Leasable Area (GLA) of industrial properties owned	63,200,000
Investment in Joint Venture	$ 1,043		$ 1,012
Receivables from Joint Ventures	18		19
Fees received from joint ventures	58	76
2003 Net Lease Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	5
Gross Leasable Area (GLA) of industrial properties owned	2,700,000
Investment in Joint Venture	$ 1,043
2007 Europe Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of industrial properties owned	0
Equity interest	10.00%