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Segment Reporting (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting [Abstract]
Rental income from real estate assets sold or held for sale	$ 8,814	$ 15,098	$ 31,731	$ 46,610
Operating expenses from real estate assets sold or held for sale	(3,289)	(5,918)	(11,980)	(18,362)
Income (Loss) From Assets Held for Sale, Not Classified as Discontinued Operations	$ 5,525	$ 9,180	$ 19,751	$ 28,248

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- Definition

Disposal Group, Not Discontinued Operation, Net Operating Income From Assets Held for Sale, Not Classified as Discontinued Operations

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- Definition

Operating Expenses From Assets Held for Sale, Not Classified as Discontinued Operations

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- Definition

Revenue From Assets Held for Sale, Not Classified as Discontinued Operations

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