Equity Investment in Real Estate and the Managed REITs (Details 4) (Managed REITs, USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Managed REITs
Equity Method Investment Summarized Financial Information Income Statement
Revenues	$ 224,594	$ 191,171	$ 365,819	$ 369,003
Expenses	(196,673)	(180,018)	(331,155)	(340,649)
Income from continuing operations	27,921	11,153	34,664	28,354
Net income attributable to the Managed REITs	$ 40,469	$ 16,099	$ 47,211	$ 26,721