Subsequent Event (Details) (USD $)	12 Months Ended				0 Months Ended
	Dec. 31, 2013	Jan. 02, 2014	Jan. 02, 2014 GroveatShrewsbury [Member] sqft	Jan. 02, 2014 Brook 35 [Member] sqft	Jan. 02, 2014 GroveatShrewsbury & Brook 35 [Member]	Jan. 02, 2014 Grove at Shrewsbury (WEST) [Member]	Jan. 01, 2015 GroveatShrewsbury & Brook 35 [Member]
Subsequent Event [Line Items]
Long-term Debt, Gross			$ 45,400,000	$ 11,500,000		$ 11,400,000
Leasable area (square feet)			187,000	99,000
Repayments of Secured Debt	157,300,000
Business Acquisition, Cost of Acquired Entity, Purchase Price					161,000,000
Effective Economic Interest Acquisition		84.00%
Noncash or Part Noncash Acquisition, Debt Assumed					68,000,000
Operating partnership units, outstanding					632,000
Business Acquisition, Cost of Acquired Entity, Cash Paid					13,000,000
Stated Interest Rate			5.82%	5.46%		6.38%
Price to Acquire Non-Controlling Interest							$ 9,000,000