Debt (Details) (USD $)	3 Months Ended	9 Months Ended					0 Months Ended		0 Months Ended	8 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Jun. 02, 2014 Brook 35	Jan. 02, 2014 Brook 35	Jan. 02, 2014 The Grove at Shrewsbury (East)	Jan. 02, 2014 The Grove at Shrewsbury (West)	Jun. 03, 2014 Melville Mall	Jan. 02, 2014 The Grove at Shrewsbury & Brook 35	Aug. 28, 2014 Term loan	Aug. 27, 2014 Term loan
Debt Instrument [Line Items]
Principal				$ 11,500,000	$ 45,400,000	$ 11,400,000		$ 68,300,000
Fair value								73,800,000
Stated Interest Rate			4.65%	5.46%	5.82%	6.38%
Face amount			11,500,000
Repayments of secured mortgage loan							20,300,000
Change in Basis Points spread									0.40%
Debt Instrument, Basis Spread over LIBOR									0.90%	1.30%
Maximum borrowing capacity under revolving credit facility	600,000,000	600,000,000
Maximum amount outstanding under revolving credit facility	58,500,000	58,500,000
Weighted average borrowings outstanding	24,100,000	9,500,000
Weighted average interest rate, before amortization of debt fees	1.07%	1.07%
Outstanding balance of revolving credit facility	$ 11,000,000	$ 11,000,000