Intangibles - Components of Gross Carrying Amount and Accumulated Amortization of Intangible Liabilities (Detail) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Intangible liabilities:
Below-market lease intangibles	$ 11,487,000	$ 9,065,316
Below-market lease amortization	(1,941,013)	(1,264,464)
Intangible liabilities, net	$ 9,545,987	$ 7,800,852

Amount of accumulated amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.

No definition available.

Name:	us-gaap_BelowMarketLeaseAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant