Summary Of Significant Accounting Policies (Income Taxes and Segments) (Details)	12 Months Ended
Dec. 31, 2017 USD ($) property segment	Dec. 31, 2016 USD ($)
Accounting Policies [Abstract]
Minimum percentage of taxable income distributed to shareholders	90.00%
Material unrecognized tax benefits \| $	$ 0	$ 0
Number of properties exceeding segment reporting threshold \| property	0
Segment reporting threshold	10% of our revenues or property operating income
Number of segments \| segment	1

Minimum percentage of taxable income distributed to shareholders.

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- Definition

Number of Properties Exceeding Segment Reporting Threshold

+ References

No definition available.

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- References

No definition available.

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- Definition

Description of the factors used to identify reportable segments, including the basis of organization (for example, whether management has chosen to organize the enterprise around differences in products and services, geographic areas, regulatory environments, or a combination of factors and whether operating segments have been aggregated to reportable segments).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

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