Organization and Nature of Business (Details Textual)	6 Months Ended
	Jun. 30, 2018
Organization and Nature of Business [Line Items]
Percent of Real Estate Properties Occupied	94.00%
Number of Units in Real Estate Property	13,174
Annual Distribution Percentage Rate	90.00%
Operating Units [Member]
Organization and Nature of Business [Line Items]
Number of Units in Real Estate Property	10,374
Under Development [Member]
Organization and Nature of Business [Line Items]
Number of Units in Real Estate Property	2,800