Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v2.3.0.15
Subsequent Events (Details) (USD $)
In Millions
1 Months Ended
Sep. 30, 2011
Northern Virginia Industrial Park II [Member]
 
Proceeds from sales of business $ 44.5
Columbia Park Road And Dulles Business Park [Member]
 
Proceeds from sales of business $ 70.6