Related Party Transactions - Schedule of Related Party Transactions (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Commissions | Managing Dealer [Member]
Related Party Transaction [Line Items]
Related party fees and expenses	$ 332,914	$ 285,677
Dealer Manager Fees | Managing Dealer [Member]
Related Party Transaction [Line Items]
Related party fees and expenses	195,796	138,634
Distribution and shareholder servicing fees | Managing Dealer [Member]
Related Party Transaction [Line Items]
Related party fees and expenses	26,359	6,769
Organization and offering expenses | Managing and Sub Manager
Related Party Transaction [Line Items]
Related party fees and expenses	242,008	171,267
Base management fees | Managing and Sub Manager
Related Party Transaction [Line Items]
Related party fees and expenses	515,598	241,638
Expense Support Provided Expense Support and Conditional Reimbursement Agreement [Member] | Managing and Sub Manager
Related Party Transaction [Line Items]
Related party fees and expenses	(607,630)	(216,073)
Reimbursement of Third Party Operating Expenses | Manager
Related Party Transaction [Line Items]
Related party fees and expenses	19,839	11,864
Reimbursement of Third Party Pursuit Costs [Member] | Sub Manager [Member]
Related Party Transaction [Line Items]
Related party fees and expenses	$ 6,949	$ 0