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Real Estate (Schedule of Real Estate Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Real Estate Properties [Line Items]
Land and land improvements	$ 1,327,235	$ 1,326,957
Buildings and improvements	1,684,743	1,818,606
Less: accumulated depreciation and amortization	(473,162)	(468,849)
Real estate, net	2,538,816	2,676,714
Real estate available and held for sale	288,021	285,982
Total real estate	2,826,837	2,962,696
Net Lease
Real Estate Properties [Line Items]
Land and land improvements	310,196	311,890
Buildings and improvements	1,232,001	1,240,593
Less: accumulated depreciation and amortization	(378,847)	(364,323)
Real estate, net	1,163,350	1,188,160
Real estate available and held for sale	2,708	4,521
Total real estate	1,166,058	1,192,681
Operating Properties
Real Estate Properties [Line Items]
Land and land improvements	142,892	146,417
Buildings and improvements	452,742	578,013
Less: accumulated depreciation and amortization	(85,168)	(96,159)
Real estate, net	510,466	628,271
Real estate available and held for sale	138,187	162,782
Total real estate	648,653	791,053
Land
Real Estate Properties [Line Items]
Land and land improvements	874,147	868,650
Buildings and improvements	0	0
Less: accumulated depreciation and amortization	(9,147)	(8,367)
Real estate, net	865,000	860,283
Real estate available and held for sale	147,126	118,679
Total real estate	$ 1,012,126	$ 978,962

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, including real estate considered to be inventory of the entity.

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Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 944



-SubTopic 210



-Section S99



-Paragraph 1



-Subparagraph (SX 210.7-03.1(d))



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Amount before accumulated deprecation and depletion of real estate held for productive use and additions or improvements to real estate held for productive use, examples include, but are not limited to, walkways, driveways, fences, and parking lots. Excludes land held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



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-Topic 210



-SubTopic 10



-Section 45



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-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765



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