Summary of Significant Accounting Policies - Income Taxes (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
REIT taxable income required to be distributed (as a percent)	90.00%
Percentage of all distributions to stockholders which qualified as a return of capital	0.00%
Unrecognized tax benefits	$ 0	$ 0
Interest or penalties related to uncertain tax provisions	$ 0	$ 0

Represents the percentage of all distributions to stockholders which qualifies as a return of capital.

No definition available.

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- Definition

Represents the minimum percentage of annual taxable income which must be distributed to stockholders in order to maintain its qualification as a REIT.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
-URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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

+ Details

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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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