Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Discontinued operations:
Revenues from rental property		$ 20,478	$ 124	$ 51,028
Rental property expenses		(5,961)	$ (49)	(12,900)
Depreciation and amortization		(5,513)		(11,119)
Provision for doubtful accounts, net		(209)	$ (57)	(746)
Interest expense, net		(388)		(781)
Other expense, net		52	$ (12)	(133)
Income from discontinued operating properties, before income taxes		8,459	6	25,349
Impairment of property carrying value, net, before income taxes		(67,423)	$ (82)	(74,155)
Gain on disposition of operating properties, net, before income taxes		20,952		30,290
Benefit for income taxes, net		584	$ 1	1,339
(Loss)/income from discontinued operating properties		(37,428)	$ (75)	(17,177)
Net income attributable to noncontrolling interests		(815)		(7,429)
Loss from discontinued operations attributable to the Company		$ (38,243)	$ (75)	$ (24,606)