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Significant Accounting Policies - Additional Information (Detail) - USD ($)	1 Months Ended	2 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Oct. 31, 2018	Oct. 31, 2017
Accounting Policies [Abstract]
Provision for federal income taxes		$ 0
Minimum days required to stay for tax liability		183 days
Dividend payable, amount per share	$ 0.0566	$ 0.0566
Dividend payable, date to be paid	Jan. 09, 2019
Dividends Payable, date of record	Jan. 03, 2019
Distributions paid	$ 93,308	$ 189,938	$ 1,210,590	$ 1,460,231

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- Definition

Minimum period required to stay for tax liability.

+ References

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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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