Investment in Unconsolidated Ventures (Summary of Results of Operations of Unconsolidated Ventures) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule of Equity Method Investments [Line Items]
Company's share of income (Company's basis)	$ (489)	$ 1,508	$ (247)	$ 3,043
Unconsolidated Real Estate Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Revenue	35,074	36,927	69,459	77,816
Operating expenses	14,842	17,205	28,824	35,472
Interest expense, net	8,889	9,173	16,989	18,944
Depreciation and amortization	13,273	10,979	26,871	23,885
Net loss	(1,930)	(430)	(3,225)	(485)
Company's share of income (Company's basis)	$ (489)	$ 1,508	$ (247)	$ 3,043