Investment in Unconsolidated Entities (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
HSRE and DCV Holdings [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	$ 9,055	$ 6,456
Expenses:
Operating expenses	6,968	3,561
Interest expense	2,894	1,051
Depreciation and amortization	3,856	2,030
Other (income) expense	16	(53)
Total expenses	13,734	6,589
Net loss	(4,679)	(133)
Copper Beech [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	7,628	19,265
Expenses:
Operating expenses	2,571	7,300
Interest expense	2,445	2,940
Depreciation and amortization	1,263	9,777
Other (income) expense	182	339
Total expenses	6,461	20,356
Net loss	$ 1,167	$ (1,091)