Real Estate Investments - Acquisitions (Textual) (Details) $ in Thousands		9 Months Ended
	Jul. 02, 2016 USD ($) a	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Amount funded by corporate funds		$ 20,406	$ 141,303
Garza Land Acquisition [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Acreage of land | a	34.6
Gross purchase value of assets	$ 20,600
Acquisition costs	1,900
Amount funded by corporate funds	$ 20,406
Area of land under agreement to sell | a	9.5