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Commitments and Contingencies - Summary of Partnership's Total and Remaining Commitments (Details) | 12 Months Ended
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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.

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