Investment in Unconsolidated Ventures (Summary of Results of Operations of Unconsolidated Ventures) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of Equity Method Investments [Line Items]
Company's share of income (Company's basis)	$ (486)	$ 714	$ (733)	$ 3,757
Unconsolidated Real Estate Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Revenue	37,446	30,684	106,905	108,500
Operating expenses	(15,433)	(13,199)	(44,257)	(48,671)
Interest expense, net	(9,245)	(9,223)	(26,234)	(28,167)
Depreciation and amortization	(13,552)	(9,893)	(40,423)	(33,778)
Net loss	(784)	(1,631)	(4,009)	(2,116)
Company's share of income (Company's basis)	$ (486)	$ 714	$ (733)	$ 3,757