Fair Value Measurements - Additional Information (Detail) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Estimated fair value of investment in real estate, net	$ 178,120,000	$ 179,405,000
Estimated fair value of investments in real estate-related assets	23,661,895	25,615,522
Estimated fair value of loans payable excluding deferred financing costs	$ 87,391,203	$ 86,783,363

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

No definition available.

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant