Investment in Unconsolidated Ventures (Summary of Results of Operations of Unconsolidated Ventures) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule of Equity Method Investments [Line Items]
Company’s share of loss (Company’s basis)	$ (1,093)	$ (486)	$ (1,835)	$ (733)
Unconsolidated Real Estate Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Revenue	37,076	37,446	126,424	106,905
Operating expenses	(16,917)	(15,433)	(54,581)	(44,257)
Interest expense, net	(7,936)	(9,245)	(27,918)	(26,234)
Depreciation and amortization	(15,681)	(13,552)	(52,218)	(40,423)
Net loss	(3,458)	(784)	(8,293)	(4,009)
Company’s share of loss (Company’s basis)	$ (1,093)	$ (486)	$ (1,835)	$ (733)