Intangibles - Intangibles Lease Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Intangibles
Gross intangible lease assets	$ 732,110	$ 795,305
Accumulated depreciation and amortization	(336,812)	(385,223)
Intangible assets, net	$ 395,298	$ 410,082

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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