Mortgage Revenue Bonds - Schedule of Terms of MRBSs upon Redemption (Details)	1 Months Ended	3 Months Ended
	Jan. 31, 2022 USD ($) Unit	Mar. 31, 2023 USD ($) Unit	Mar. 31, 2022 USD ($)
Mortgage Revenue Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Principal Outstanding at Date of Redemption | $	$ 61,055,000	$ 8,493,040	$ 17,003,840
Live 929 Apartments [Member] | 2014 Series A [Member] | Mortgage Revenue Bonds [Member] | Baltimore, MD [Member]
Schedule Of Available For Sale Securities [Line Items]
Month Restructured	January
Units | Unit	575
Original Maturity Date	Jul. 01, 2049
Interest Rate	5.78%
Principal Outstanding at Date of Redemption | $	$ 39,445,000
Live 929 Apartments [Member] | 2014 Series B [Member] | Mortgage Revenue Bonds [Member] | Baltimore, MD [Member]
Schedule Of Available For Sale Securities [Line Items]
Month Restructured	January
Units | Unit	575
Original Maturity Date	Jul. 01, 2039
Interest Rate	1.60%
Principal Outstanding at Date of Redemption | $	$ 21,610,000
Live 929 Apartments [Member] | Series 2022A [Member] | Baltimore, MD [Member]
Schedule Of Available For Sale Securities [Line Items]
Units | Unit	575
Original Maturity Date	Jan. 01, 2060
Interest Rate	4.30%
Greens Property [Member] | Series A [Member] | Mortgage Revenue Bonds [Member] | Durham NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Month Redeemed		February 2023
Units | Unit		168
Original Maturity Date		Oct. 01, 2047
Interest Rate		6.50%
Principal Outstanding at Date of Redemption | $		$ 7,579,000
Greens Property [Member] | Series B [Member] | Mortgage Revenue Bonds [Member] | Durham NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Month Redeemed		February 2023
Units | Unit		168
Original Maturity Date		Oct. 01, 2047
Interest Rate		12.00%
Principal Outstanding at Date of Redemption | $		$ 914,040