Investments in Real Estate and Real Estate Under Construction Acquisition, Pro Forma (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Business Acquisition [Line Items]
Estimated Acquisition Cost	$ 53,345
Lewisburg, Tennessee [Member] | Industrial Property [Member]
Business Acquisition [Line Items]
Estimated Acquisition Cost	13,320
Lease Term (Years)	12 years
Auburn Hills, Michigan [Member] | Office Property [Member]
Business Acquisition [Line Items]
Estimated Acquisition Cost	$ 40,025
Lease Term (Years)	14 years