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Fair Value of Financial Instruments - Summary of Range of Effective Yields and Weighted Average Effective Yields of Partnership's Investments (Details) | Jun. 30, 2025 | Dec. 31, 2024
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Mortgage Revenue Bonds [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Weighted Average Effective Yields | [1] | 5.90% | 5.50%
Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Range of Effective Yields |  | 3.40% | 3.70%
Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Range of Effective Yields |  | 11.10% | 8.40%
Taxable Mortgage Revenue Bonds [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Weighted Average Effective Yields | [1] | 8.60% | 8.70%
Taxable Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Range of Effective Yields |  | 6.50% | 7.10%
Taxable Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Range of Effective Yields |  | 14.30% | 11.90%
Bond Purchase Commitment [Member] |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Range of Effective Yields |  | 6.00% |
Weighted Average Effective Yields | [1] | 6.00% |
[1] | Weighted by the total principal outstanding of all the respective securities as of the reporting date.

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