Subsequent Events - Additional Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	1 Months Ended
	Sep. 30, 2014 Property	Oct. 30, 2014 Subsequent Event Parcels Property
Subsequent Event [Line Items]
Number of industrial properties sold	20	2
Number of land parcels sold		1
Proceeds from sale of industrial properties and land parcel	$ 59,011	$ 3,285