Credit Facilities (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) extension	Dec. 31, 2020 USD ($)
Line of Credit Facility [Line Items]
Credit facilities, net	$ 68,878,506	$ 70,319,868
Line of Credit
Line of Credit Facility [Line Items]
Long-term line of credit, gross	69,995,000	71,495,000
Unamortized debt issuance costs	(1,116,494)	(1,175,132)
Credit facilities, net	$ 68,878,506	70,319,868
Line of Credit | Secured Credit Facility | Berkadia Credit Facility
Line of Credit Facility [Line Items]
Rate	3.93%
Long-term line of credit, gross	$ 35,995,000	35,995,000
Line of Credit | Secured Credit Facility | JP Morgan Credit Facility
Line of Credit Facility [Line Items]
Long-term line of credit, gross	$ 34,000,000	$ 35,500,000
Number of extensions | extension	2
Maximum borrowing capacity	$ 67,600,000
Potential additional financing	$ 125,000,000
Term of extension (in years)	1 year
Line of Credit | Secured Credit Facility | JP Morgan Credit Facility | LIBOR | Minimum
Line of Credit Facility [Line Items]
Interest rate on note issued	1.50%
Line of Credit | Secured Credit Facility | JP Morgan Credit Facility | LIBOR | Maximum
Line of Credit Facility [Line Items]
Interest rate on note issued	1.75%