Commitments and Contingencies - Summary of Partnership's Total and Remaining Commitments (Details)	12 Months Ended
	Dec. 31, 2023 USD ($)
Commitments And Other Guarantees [Line Items]
Total Initial Commitment	$ 553,541,337
Remaining Commitment as of December 31, 2023	$ 366,418,843
The Residency At Empire [Member] | Series BB-3 [Member]
Commitments And Other Guarantees [Line Items]
Maturity Date	2029-12
Interest Rate	6.00%
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member]
Commitments And Other Guarantees [Line Items]
Total Initial Commitment	$ 195,500,000
Remaining Commitment as of December 31, 2023	$ 148,829,966
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Safford [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-10
Maturity Date	2026-10	[1]
Interest Rate	7.59%	[2]
Total Initial Commitment	$ 43,000,000
Remaining Commitment as of December 31, 2023	$ 35,439,966
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency At Mayer [Member] | Series A T Mortgage [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2021-10
Maturity Date	2024-10
Total Initial Commitment	$ 12,500,000
Remaining Commitment as of December 31, 2023	$ 1,000,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency At Mayer [Member] | Series A T Mortgage [Member] | SOFR [Member]
Commitments And Other Guarantees [Line Items]
Interest Rate	3.70%	[2]
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | Meadow Valley [Member] | Series A [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2021-12
Maturity Date	2029-12
Interest Rate	6.25%	[2]
Total Initial Commitment	$ 44,000,000
Remaining Commitment as of December 31, 2023	$ 23,245,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at the Entrepreneur [Member] | Series J-4 [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-04
Maturity Date	2040-03
Total Initial Commitment	$ 16,420,000
Remaining Commitment as of December 31, 2023	$ 16,420,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at the Entrepreneur [Member] | Series J-4 [Member] | SOFR [Member]
Commitments And Other Guarantees [Line Items]
Interest Rate	3.60%	[2],[3]
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at the Entrepreneur [Member] | Series J-5 [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-02
Maturity Date	2025-04	[1]
Total Initial Commitment	$ 5,000,000
Remaining Commitment as of December 31, 2023	$ 4,000,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at the Entrepreneur [Member] | Series J-5 [Member] | SOFR [Member]
Commitments And Other Guarantees [Line Items]
Interest Rate	3.60%	[2]
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at the Entrepreneur [Member] | Series J-3 [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-04
Maturity Date	2040-03
Interest Rate	6.00%	[2]
Total Initial Commitment	$ 26,080,000
Remaining Commitment as of December 31, 2023	$ 13,780,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at the Entrepreneur [Member] | Series J-T [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-04
Maturity Date	2025-04	[1]
Total Initial Commitment	$ 8,000,000
Remaining Commitment as of December 31, 2023	$ 7,000,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency at the Entrepreneur [Member] | Series J-T [Member] | SOFR [Member]
Commitments And Other Guarantees [Line Items]
Interest Rate	3.65%	[2]
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | Village at Hanford Square [Member] | Series H-T [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-05
Maturity Date	2030-05
Interest Rate	7.25%	[2]
Total Initial Commitment	$ 10,400,000
Remaining Commitment as of December 31, 2023	$ 9,400,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency At Empire [Member] | Series BB-3 [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-12
Maturity Date	2040-12
Interest Rate	6.45%	[2],[4]
Total Initial Commitment	$ 14,000,000
Remaining Commitment as of December 31, 2023	$ 8,945,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency At Empire [Member] | Series BB-4 [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-12
Maturity Date	2040-12
Interest Rate	6.45%	[2],[5]
Total Initial Commitment	$ 47,000,000
Remaining Commitment as of December 31, 2023	$ 47,000,000
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | The Residency At Empire [Member] | Series BB-T Mortgage [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-12
Maturity Date	2025-12	[1]
Interest Rate	7.45%	[2]
Total Initial Commitment	$ 9,404,500
Remaining Commitment as of December 31, 2023	$ 8,404,500
Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member] | 40rty On Colony [Member] | Series P-T [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-06
Maturity Date	2030-06
Interest Rate	7.45%	[2]
Total Initial Commitment	$ 5,950,000
Remaining Commitment as of December 31, 2023	4,950,000
Taxable Mortgage Revenue Bonds [Member]
Commitments And Other Guarantees [Line Items]
Total Initial Commitment	46,254,500
Remaining Commitment as of December 31, 2023	30,754,500
Governmental Issuer Loans and Taxable Governmental Issuer Loans [Member]
Commitments And Other Guarantees [Line Items]
Total Initial Commitment	97,057,835
Remaining Commitment as of December 31, 2023	$ 51,120,535
Governmental Issuer Loans and Taxable Governmental Issuer Loans [Member] | Poppy Grove I [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-09
Maturity Date	2025-04	[1]
Interest Rate	6.78%	[2]
Total Initial Commitment	$ 35,688,328
Remaining Commitment as of December 31, 2023	$ 15,842,328
Governmental Issuer Loans and Taxable Governmental Issuer Loans [Member] | Poppy Grove II [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-09
Maturity Date	2025-04	[1]
Interest Rate	6.78%	[2]
Total Initial Commitment	$ 22,250,000
Remaining Commitment as of December 31, 2023	$ 12,708,700
Governmental Issuer Loans and Taxable Governmental Issuer Loans [Member] | Poppy Grove III [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-09
Maturity Date	2025-04	[1]
Interest Rate	6.78%	[2]
Total Initial Commitment	$ 39,119,507
Remaining Commitment as of December 31, 2023	22,569,507
Taxable Governmental Issuer Loans [Member]
Commitments And Other Guarantees [Line Items]
Total Initial Commitment	56,579,465
Remaining Commitment as of December 31, 2023	$ 53,579,465
Taxable Governmental Issuer Loans [Member] | Poppy Grove I [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-09
Maturity Date	2025-04	[1]
Interest Rate	6.78%	[2]
Total Initial Commitment	$ 21,157,672
Remaining Commitment as of December 31, 2023	$ 20,157,672
Taxable Governmental Issuer Loans [Member] | Poppy Grove II [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-09
Maturity Date	2025-04	[1]
Interest Rate	6.78%	[2]
Total Initial Commitment	$ 10,941,300
Remaining Commitment as of December 31, 2023	$ 9,941,300
Taxable Governmental Issuer Loans [Member] | Poppy Grove III [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-09
Maturity Date	2025-04	[1]
Interest Rate	6.78%	[2]
Total Initial Commitment	$ 24,480,493
Remaining Commitment as of December 31, 2023	23,480,493
Property Loans [Member]
Commitments And Other Guarantees [Line Items]
Total Initial Commitment	56,519,582
Remaining Commitment as of December 31, 2023	$ 19,886,804
Property Loans [Member] | Osprey Village [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2021-07
Maturity Date	2024-08	[1]
Total Initial Commitment	$ 25,500,000
Remaining Commitment as of December 31, 2023	$ 10,501,704
Property Loans [Member] | Osprey Village [Member] | SOFR [Member]
Commitments And Other Guarantees [Line Items]
Interest Rate	3.07%	[2]
Property Loans [Member] | Willow Place Apartments [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2021-09
Maturity Date	2024-10	[1]
Total Initial Commitment	$ 21,351,328
Remaining Commitment as of December 31, 2023	$ 2,475,722
Property Loans [Member] | Willow Place Apartments [Member] | SOFR [Member]
Commitments And Other Guarantees [Line Items]
Interest Rate	3.30%	[2]
Property Loans [Member] | Sandy Creek Apartments [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-08
Maturity Date	2026-09	[1]
Interest Rate	8.63%	[2],[6]
Total Initial Commitment	$ 7,830,000
Remaining Commitment as of December 31, 2023	$ 5,410,124
Property Loans [Member] | Willow Place Apartments Supplemental [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-11
Maturity Date	2024-10	[1]
Total Initial Commitment	$ 1,838,254
Remaining Commitment as of December 31, 2023	$ 1,499,254
Property Loans [Member] | Willow Place Apartments Supplemental [Member] | SOFR [Member]
Commitments And Other Guarantees [Line Items]
Interest Rate	3.45%	[2]
Joint Venture Investments [Member]
Commitments And Other Guarantees [Line Items]
Total Initial Commitment	$ 97,729,955
Remaining Commitment as of December 31, 2023	$ 58,347,573
Joint Venture Investments [Member] | Vantage At San Marcos [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2020-11	[6],[7]
Total Initial Commitment	$ 9,914,529	[6],[7]
Remaining Commitment as of December 31, 2023	$ 8,943,914	[6],[7]
Joint Venture Investments [Member] | Freestone Greeley [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2022-10	[6]
Total Initial Commitment	$ 16,035,710	[6]
Remaining Commitment as of December 31, 2023	$ 11,137,993	[6]
Joint Venture Investments [Member] | Freestone Greenville [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-12	[6]
Total Initial Commitment	$ 19,934,456	[6]
Remaining Commitment as of December 31, 2023	$ 14,597,244	[6]
Joint Venture Investments [Member] | Freestone Ladera [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-12	[6]
Total Initial Commitment	$ 17,097,624	[6]
Remaining Commitment as of December 31, 2023	$ 13,449,494	[6]
Joint Venture Investments [Member] | Vantage at Loveland [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2021-04	[8]
Total Initial Commitment	$ 18,215,000	[8]
Remaining Commitment as of December 31, 2023	$ 1,065,061	[8]
Joint Venture Investments [Member] | The Jessam at Hays Farms [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2023-07
Total Initial Commitment	$ 16,532,636
Remaining Commitment as of December 31, 2023	9,153,867
Bond Purchase Commitment [Member]
Commitments And Other Guarantees [Line Items]
Total Initial Commitment	3,900,000
Remaining Commitment as of December 31, 2023	$ 3,900,000
Bond Purchase Commitment [Member] | Anaheim & Walnut [Member]
Commitments And Other Guarantees [Line Items]
Commitment Date	2021-09
Maturity Date	Q3 2024	[9]
Interest Rate	4.85%	[2]
Total Initial Commitment	$ 3,900,000
Remaining Commitment as of December 31, 2023	$ 3,900,000

[1] The borrowers may elect to extend the maturity date for a period ranging between six and twelve months upon meeting certain conditions, which may include payment of a non-refundable extension fee.

[2] The variable index interest rate components are typically subject to floors that range from 0% to 0.85%.

[3] Upon stabilization, the MRB will convert to a fixed rate of 8.0% and become subordinate to the other senior MRBs.

[4] Beginning December 2029, the interest rate will change to the greater of (i) 3.25% over the then 10-Year SOFR Swap rate, or (ii) 6.00%.

[5] Upon stabilization, the MRB will convert to a fixed rate of 10.0% and become subordinate to the other senior MRBs of the borrower.

[6] A development site has been identified for this property but construction had not commenced as of December 31, 2023.

[7] The property became a consolidated VIE effective during the fourth quarter of 2021 (Note 5).

[8] In July 2023, the Partnership's initial commitment of $16.3 million was increased by $1.9 million upon meeting certain conditions as outlined in the original agreement.

[9] This is the estimated closing date of the associated bond purchase commitment.