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Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Annual dividends distribution percentage to shareholders to qualify as a REIT	90.00%
Significant temporary differences or tax credits associated with our taxable REIT subsidiaries	$ 0
Difference Between Carry Value Of Net Assets And Tax Basis Of Net Assets	1,300,000
Income tax expense	1,224	$ 1,617	$ 1,872
Proceeds from Income Tax Refunds	500
Uncertain tax positions or unrecognized tax benefits	$ 0
Minimum [Member]
Operating Loss Carryforwards, Expiration Dates	Jan. 01, 2034
Maximum [Member]
Operating Loss Carryforwards, Expiration Dates	Jan. 01, 2037

X

- Definition

As a Real Estate Investment Trust (REIT), we are required to distribute annual dividends to shareholders to qualify as a REIT equal to a minimum percentage of 90% of REIT taxable income, computed without regard to the dividends paid deduction and net capital gains.

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The amount as of the balance sheet date of the difference between the tax basis of capital assets and the basis of capital assets computed in accordance with generally accepted accounting principles. The difference in basis, attributable to different capitalization of costs, depreciation, or amortization methodologies, will increase future taxable income when such basis difference is realized. Capital assets include but are not limited to assets such as land, real estate, leasehold improvements, machinery and equipment and furniture and fixtures.

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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
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-Subparagraph (SAB Topic 6.I.7)
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Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of domestic subsidiaries.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 3
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The amount of cash received during the period as refunds for the overpayment of taxes.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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-Name Accounting Standards Codification
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Amount of unrecognized tax benefits.

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