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Governmental Issuer Loans - Summary of Partnership's GIL Investments (Parenthetical) (Details) - Governmental Issuer Loans [Member] - USD ($) $ in Millions | Feb. 01, 2025 | Sep. 30, 2024 | Dec. 31, 2023
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Floor Rate [Member] | Minimum [Member] |  |  |
Governmental Issuer Loans [Line Items] |  |  |
Variable rate |  | 0.25% | 0.00%
Floor Rate [Member] | Maximum [Member] |  |  |
Governmental Issuer Loans [Line Items] |  |  |
Variable rate |  | 0.50% | 0.85%
Poppy Grove I [Member] | Maximum [Member] |  |  |
Governmental Issuer Loans [Line Items] |  |  |
Partnership subordinate loan amount |  | $ 3.8 | $ 3.8
Poppy Grove II [Member] | Maximum [Member] |  |  |
Governmental Issuer Loans [Line Items] |  |  |
Partnership subordinate loan amount |  | 2.2 | 2.2
Poppy Grove III [Member] | Maximum [Member] |  |  |
Governmental Issuer Loans [Line Items] |  |  |
Partnership subordinate loan amount |  | $ 4.2 | $ 4.2
SOFR [Member] | Sandy Creek Apartments [Member] | Forecast [Member] |  |  |
Governmental Issuer Loans [Line Items] |  |  |
Variable rate | 2.80% |  |

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