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Governmental Issuer Loans - Additional Information (Details) | 1 Months Ended | 6 Months Ended |
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Apr. 30, 2025 USD ($) | Feb. 28, 2025 USD ($) | Jan. 31, 2025 USD ($) | Jun. 30, 2024 USD ($) | Feb. 29, 2024 USD ($) | Jun. 30, 2025 USD ($) Entities Property | Dec. 31, 2024 USD ($) Property
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Number of Variable Interest Entities | Property |  |  |  |  |  | 23 | 31
Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Accrued interest receivable |  |  |  |  |  | $ 692,000 | $ 1,400,000
Number of Variable Interest Entities | Entities |  |  |  |  |  | 2 |
Outstanding principal |  |  |  |  |  | $ 12,100,000 |
Property Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Outstanding principal |  |  |  |  |  | 1,000,000 |
Poppy Grove GILs [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Outstanding principal |  |  |  |  |  | 109,800,000 |
Poppy Grove taxable GILs [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Outstanding principal |  |  |  |  |  | 37,600,000 |
Poppy Grove I [Member] | Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Borrower |  | $ 5,200,000 |  |  |  |  |
Poppy Grove II [Member] | Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Borrower |  | 1,800,000 |  |  |  |  |
Poppy Grove III [Member] | Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Borrower |  | 5,700,000 |  |  |  |  |
Gateway and Yarbrough Predevelopment Project Taxable MRB [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Outstanding principal |  |  |  |  |  | $ 800,000 |
Legacy Commons, Magnolia, Ospery Village, Willow Palace Apartments And Supplemental [Member] | Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Partnership recognized loan fee |  |  | $ 87,000 | $ 51,000 | $ 87,000 |  |
Legacy Commons at Signal Hills [Member] | Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Maturity date, month and year |  |  |  |  |  | 2025-08 |
Poppy Grove I, Poppy Grove II, And Poppy Grove III [Member] | Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Partnership recognized loan fee |  | $ 307,000 |  |  |  |  |
Maturity date, month and year |  | 2025-10 |  |  |  |  |
Construction Lending JV [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Proceeds from sale of asset at par plus accrued interest |  |  |  |  |  | $ 7,500,000 |
Construction Lending JV [Member] | Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Proceeds from sale of asset at par plus accrued interest | $ 6,500,000 |  |  |  |  |  |

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