Investment in Unconsolidated Real Estate Ventures - Summary of Results of Operations of Real Estate Ventures with Interests (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Schedule Of Equity Method Investments [Line Items]
Equity in loss of Real Estate Ventures		$ (748)	$ (403)
Unconsolidated Real Estate Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Revenue		54,279	46,525
Operating expenses		(25,166)	(26,668)
Interest expense, net		(10,830)	(8,989)
Depreciation and amortization		(20,761)	(20,160)
Net loss	[1]	(2,478)	(9,292)
Equity in loss of Real Estate Ventures		$ (748)	$ (403)

[1] The three-month period ended March 31, 2016 amount includes $6.4 million of acquisition deal costs related to the formation of the MAP Venture during the three-month period ended March 31, 2016.