Investment in Unconsolidated Ventures (Summary of Results of Operations of Unconsolidated Ventures) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of Equity Method Investments [Line Items]
Company’s share of loss (Company’s basis)	$ (873)	$ (489)	$ (742)	$ (247)
Unconsolidated Real Estate Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Revenue	43,239	35,074	89,348	69,459
Operating expenses	(19,132)	(14,842)	(37,665)	(28,824)
Interest expense, net	(10,136)	(8,889)	(19,982)	(16,989)
Depreciation and amortization	(17,412)	(13,273)	(36,536)	(26,871)
Net loss	(3,441)	(1,930)	(4,835)	(3,225)
Company’s share of loss (Company’s basis)	$ (873)	$ (489)	$ (742)	$ (247)