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Commitments and Contingencies - Summary of Partnership's Total and Remaining Commitments (Details) - USD ($)
 9 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Commitments And Other Guarantees [Line Items]    
Total Initial Commitment $ 189,421,739  
Remaining Commitment as of September 30, 2025 90,527,759  
Meadow Valley [Member]    
Commitments And Other Guarantees [Line Items]    
Remaining Commitment as of September 30, 2025 1,500,000 $ 2,900,000
Mortgage Revenue Bonds [Member]    
Commitments And Other Guarantees [Line Items]    
Total Initial Commitment 91,000,000  
Remaining Commitment as of September 30, 2025 $ 7,350,000  
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%  
Total Initial Commitment $ 44,000,000  
Remaining Commitment as of September 30, 2025 $ 1,500,000  
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%  
Total Initial Commitment $ 47,000,000  
Remaining Commitment as of September 30, 2025 5,850,000  
Taxable Mortgage Revenue Bonds [Member]    
Commitments And Other Guarantees [Line Items]    
Total Initial Commitment 20,704,500  
Remaining Commitment as of September 30, 2025 $ 12,904,500  
Taxable Mortgage Revenue Bonds [Member] | The Residency at Empire [Member] | Series BB-T [Member]    
Commitments And Other Guarantees [Line Items]    
Commitment Date 2022-12  
Maturity Date 2025-12  
Interest Rate 7.45%  
Total Initial Commitment $ 9,404,500  
Remaining Commitment as of September 30, 2025 $ 8,404,500  
Taxable Mortgage Revenue Bonds [Member] | Gateway and Yarbrough Predevelopment Project [Member]    
Commitments And Other Guarantees [Line Items]    
Commitment Date 2025-06  
Maturity Date 2026-07  
Interest Rate 9.00%  
Total Initial Commitment $ 2,000,000  
Remaining Commitment as of September 30, 2025 $ 1,200,000  
Taxable Mortgage Revenue Bonds [Member] | Triangle Square Predevelopment Project [Member]    
Commitments And Other Guarantees [Line Items]    
Commitment Date 2025-07  
Maturity Date 2026-07  
Interest Rate 9.00%  
Total Initial Commitment $ 9,300,000  
Remaining Commitment as of September 30, 2025 $ 3,300,000  
Property Loans [Member] | Sandoval Flats [Member]    
Commitments And Other Guarantees [Line Items]    
Commitment Date 2024-11  
Maturity Date 2027-12  
Interest Rate 7.48%  
Total Initial Commitment $ 29,846,000  
Remaining Commitment as of September 30, 2025 28,846,000  
Equity Investments [Member]    
Commitments And Other Guarantees [Line Items]    
Total Initial Commitment 25,950,239  
Remaining Commitment as of September 30, 2025 $ 19,506,259  
Equity Investments [Member] | Vantage at San Marcos [Member]    
Commitments And Other Guarantees [Line Items]    
Commitment Date 2020-11  
Total Initial Commitment $ 9,914,529  
Remaining Commitment as of September 30, 2025 $ 8,943,914  
Equity Investments [Member] | Freestone Greeley [Member]    
Commitments And Other Guarantees [Line Items]    
Commitment Date 2022-10  
Total Initial Commitment $ 16,035,710  
Remaining Commitment as of September 30, 2025 $ 10,562,345  
Bond Purchase Commitment [Member] | Kindred Apartments [Member]    
Commitments And Other Guarantees [Line Items]    
Commitment Date 2025-03  
Maturity Date 2027-12  
Interest Rate 6.875%  
Total Initial Commitment $ 21,921,000  
Remaining Commitment as of September 30, 2025 $ 21,921,000