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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)
Mar. 31, 2024
Dec. 31, 2023
Mortgage Revenue Bonds [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Weighted Average Effective Yields [1],[2] 5.20% 4.80%
Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields [1] 2.60% 2.30%
Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields [1] 8.00% 7.70%
Taxable Mortgage Revenue Bonds [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Weighted Average Effective Yields [2] 8.80% 8.80%
Taxable Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields 6.90% 6.50%
Taxable Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields 11.90% 11.90%
Bond Purchase Commitment [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields 4.30% 4.10%
Weighted Average Effective Yields [2] 4.30% 4.10%
[1] Mortgage revenue bonds excludes the Provision Center 2014-1 MRB as the bankruptcy process is nearly complete. The valuation as of March 31, 2024 is based on expected additional liquidation proceeds of approximately $197,000 at final liquidation.
[2] Weighted by the total principal outstanding of all the respective securities as of the reporting date