Investment In Real Estate - Quantitative Information About Level 3 Fair Value Measurements (Details) (Unobservable Inputs (Level 3), Contracted Price [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013 sqft Property
Unobservable Inputs (Level 3) | Contracted Price [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of industrial properties	1
Gross leaseable area	500,000
Fair value of property	$ 6,875