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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	1 Months Ended	2 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Oct. 31, 2018
Accounting Policies [Line Items]
Dividend payable, amount per share	$ 0.03408		$ 0.03408
Dividend payable, date to be paid	Jan. 09, 2020
Dividends Payable, date of record	Jan. 03, 2020
Distributions Paid	$ 52,824	$ 197,264	$ 975,509	$ 470,368
Provision for federal income taxes			$ 0
Minimum days required to stay for tax liability			183 days
Sponsor | Professional Fees Liability
Accounting Policies [Line Items]
Legal fees and expenses assumed			$ 100,000
Excess amount of assumed audit fees and legal expenses			$ 100,000

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[Line Items] for Accounting Policies [Table]

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Maximum threshold annual amount of payments legal fees and expenses.

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

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-Name Accounting Standards Codification
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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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

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