Acquisitions and Dispositions (Summary of Significant Assumptions Utilized in Estimates) (Details)	6 Months Ended
	Jun. 30, 2014 months
Minimum [Member]
Business Acquisition [Line Items]
Fair Value Inputs, Discount Rate	7.38%
Fair Value Inputs, Cap Rate	5.98%
Fair Value Measurement With Unobservable Inputs Lease up Period in Months	12
Minimum [Member] | Industrial [Member]
Business Acquisition [Line Items]
Fair Value Measurement With Unobservable Inputs Rental Rate Per Square Foot	2.75
Maximum [Member]
Business Acquisition [Line Items]
Fair Value Inputs, Discount Rate	7.68%
Fair Value Inputs, Cap Rate	6.38%
Fair Value Measurement With Unobservable Inputs Lease up Period in Months	12
Maximum [Member] | Industrial [Member]
Business Acquisition [Line Items]
Fair Value Measurement With Unobservable Inputs Rental Rate Per Square Foot	4.46