Related Party Transactions - Amounts Due from (to) Related Parties (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Due from related parties	$ 1,372,020	$ 389,774
Due to related parties	(1,093,456)	(1,172,056)
Net due to related parties	278,564	(782,282)
Expense Support
Related Party Transaction [Line Items]
Due from related parties	1,372,020	389,774
Organization and offering expenses
Related Party Transaction [Line Items]
Due to related parties	(56,888)	(66,894)
Base management fees
Related Party Transaction [Line Items]
Due to related parties	(165,338)	(78,967)
Total return incentive fee
Related Party Transaction [Line Items]
Due to related parties	(847,863)	(1,015,228)
Reimbursement of third-party operating expenses
Related Party Transaction [Line Items]
Due to related parties	(16,677)	(9,101)
Distribution and shareholder servicing fees
Related Party Transaction [Line Items]
Due to related parties	$ (6,690)	$ (1,866)

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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