Organization and Nature of Business (Details Textual) $ / shares in Units, $ in Thousands				1 Months Ended					12 Months Ended
	Oct. 08, 2014 USD ($) $ / shares	Apr. 02, 2014 USD ($) $ / shares	Sep. 09, 2013 USD ($)	Dec. 17, 2015 $ / shares shares	Oct. 21, 2015 USD ($) $ / shares shares	May. 22, 2015 USD ($) $ / shares shares	Jan. 20, 2015 USD ($) $ / shares shares	Mar. 28, 2014 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares
Organization and Nature of Business [Line Items]
Proceeds From Issuance Of Common Stock | $	$ 32,900		$ 22,600						$ 131,321	$ 76,864
Contribution Transactions Completed Description									a series of related contribution transactions pursuant to which it acquired indirect equity interests in four apartment properties, and a 100% fee simple interest in a fifth apartment property for an aggregate asset value of $152.3 million (inclusive of Villas at Oak Crest, which is accounted for under the equity method, and Springhouse, in which the Company already owned an interest and which has been reported as consolidated prior to the IPO).
Percent of Real Estate Properties Occupied									93.00%
Number of Units in Real Estate Property									6,449
Annual Distribution Percentage Rate									90.00%
Common Class A [Member]
Organization and Nature of Business [Line Items]
Proceeds From Issuance Of Common Stock | $						$ 77,600	$ 53,700
Stock Issued During Period, Shares, New Issues | shares						6,348,000	4,600,000		3,035,444
Proceeds from Issuance Initial Public Offering | $		$ 44,000
Stockholders Equity, Reverse Stock Split									immediately prior to the listing, including shares sold in its continuous registered offering, was changed into one-third of a share of each of Class B-1 common stock, Class B-2 common stock and Class B-3 common stock. Following the filing of the Second Charter Amendment, the Company effected a 2.264881-to-1 reverse stock split of its outstanding shares of Class B-1 common stock, Class B-2 common stock and Class B-3 common stock, and on March 31, 2014, the Company effected an additional 1.0045878-to-1 reverse stock split of its outstanding shares of Class B-1 common stock, Class B-2 common stock and Class B-3 common stock.
Sale of Stock, Price Per Share	$ 11.90					$ 13.00	$ 12.50
Common Stock, Par or Stated Value Per Share						$ 0.01	$ 0.01		$ 0.01	$ 0.01
Stock and Warrants Issued During Period, Shares, Preferred Stock and Warrants | shares				3,000,000
Series A Cumulative Redeemable Preferred Stock
Organization and Nature of Business [Line Items]
Proceeds From Issuance Of Common Stock | $					$ 69,200
Stock Issued During Period, Shares, New Issues | shares					2,875,000
Shares Issued, Price Per Share					$ 0.01
Sale of Stock, Price Per Share					$ 25.00
Annual Distribution Percentage Rate					8.25%
Preferred Stock, Liquidation Preference Per Share				$ 1,000	$ 25.00
Preferred Stock, Capital Shares Reserved for Future Issuance | shares				150,000
Series B Preferred Stock [Member]
Organization and Nature of Business [Line Items]
Preferred Stock, Liquidation Preference Per Share				$ 1,000
Preferred Stock, Capital Shares Reserved for Future Issuance | shares				150,000
IPO [Member]
Organization and Nature of Business [Line Items]
Sale of Stock, Price Per Share		$ 14.50
IPO [Member] | Common Class A [Member]
Organization and Nature of Business [Line Items]
Stock Issued During Period, Shares, New Issues | shares								3,448,276
Shares Issued, Price Per Share								$ 14.50
Proceeds From Issuance Initial Public Offering Gross | $								$ 50,000
December 2014 Shelf Registration Statement Offering [Member]
Organization and Nature of Business [Line Items]
Preferred Stock, Capital Shares Reserved for Future Issuance | shares				150,000
Operating Units [Member]
Organization and Nature of Business [Line Items]
Number of Units in Real Estate Property									4,625
Under Development [Member]
Organization and Nature of Business [Line Items]
Number of Units in Real Estate Property									1,824