Mortgage Revenue Bonds - Schedule of MRBs Acquisitions (Details)		1 Months Ended	9 Months Ended
		Jan. 31, 2022 USD ($) Unit	Sep. 30, 2022 USD ($) Unit	Sep. 30, 2021 USD ($) Unit
Schedule Of Available For Sale Securities [Line Items]
Principal Acquired | $			$ 20,307,000
Committed to funding amount | $			$ 554,917,871
Jackson Manor Apartments [Member] | Jackson, MS [Member]
Schedule Of Available For Sale Securities [Line Items]
Month Acquired	[1]			April
Units | Unit	[1]			60
Maturity Date	[1]			May 01, 2038
Interest Rate	[1]			5.00%
Principal Acquired | $	[1]			$ 4,150,000
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-1 [Member] | CA
Schedule Of Available For Sale Securities [Line Items]
Month Acquired			April
Units | Unit			200
Maturity Date			Mar. 31, 2040
Interest Rate			6.00%
Principal Acquired | $			$ 9,000,000
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-2 [Member] | CA
Schedule Of Available For Sale Securities [Line Items]
Month Acquired			April
Units | Unit			200
Maturity Date			Mar. 31, 2040
Interest Rate			6.00%
Principal Acquired | $			$ 7,500,000
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-3 [Member] | CA
Schedule Of Available For Sale Securities [Line Items]
Month Acquired			April
Units | Unit			200
Maturity Date			Mar. 31, 2040
Interest Rate			6.00%
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-4 [Member] | CA
Schedule Of Available For Sale Securities [Line Items]
Month Acquired			April
Units | Unit			200
Maturity Date			Mar. 31, 2040
Interest Rate	[2]		3.60%
CCBA Senior Garden Apartments [Member] | MRB and Taxable MRB Commitments [Member] | San Diego, CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Principal Acquired | $	[3]		$ 3,807,000
CCBA Senior Garden Apartments [Member] | MRB and Taxable MRB Commitments [Member] | CA
Schedule Of Available For Sale Securities [Line Items]
Month Acquired	[3]		June
Units | Unit	[3]		45
Maturity Date	[3]		Jul. 01, 2037
Interest Rate	[3]		4.50%
Live 929 Apartments [Member] | Series 2022A [Member] | Baltimore, MD [Member]
Schedule Of Available For Sale Securities [Line Items]
Month Acquired		January
Units | Unit		575
Maturity Date		Jan. 01, 2060
Interest Rate		4.30%
Principal Acquired | $		$ 66,365,000

[1] The Partnership has committed to provide total funding of the MRB up to $6.9 million during the acquisition and rehabilitation phase of the property on a drawdown basis. Upon stabilization of the property, the MRB will be partially repaid and the maximum balance of the MRB after stabilization will not exceed $4.8 million

[2] The interest rate is subject to an all-in floor of 3.87%. Upon stabilization, the Series J-4 MRB will become subordinate to the Series J-1, J-2 and J-3 MRBs and will convert to a fixed rate of 8.0%. Upon stabilization of the property, the MRB will be partially repaid and the maximum balance of the MRB after stabilization will not exceed $1.5 million.

[3] The investment was previously reported as a bond purchase commitment that has converted to an MRB.