Investments in Unconsolidated Entities - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2021	Jan. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Gain on sale of investments in unconsolidated entity		$ 2,809,106
Vantage At Germantown [Member]
Schedule Of Equity Method Investments [Line Items]
Cash received	$ 16,100,000
Income on sale of properties	862,000
Gain on sale of investments in unconsolidated entity	$ 2,800,000
Vantage At Westover Hills [Member]
Schedule Of Equity Method Investments [Line Items]
Equity commitment of fund construction			$ 7,300,000
ATAX Vantage Holdings, LLC [Member] | Minimum [Member]
Schedule Of Equity Method Investments [Line Items]
Return on investment period		2 years
ATAX Vantage Holdings, LLC [Member] | Maximum [Member]
Schedule Of Equity Method Investments [Line Items]
Return on investment period		3 years